22 Watt Audio Amplifier


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The 22 watt amp is easy to build, and very inexpensive. The circuit can be used as a booster in a car audio system, an amp for satellite speakers in a surround sound or home theater system, or as an amp for computer speakers. The circuit is quite compact and uses only about 60 watts. The circuit is not mine, it came from Popular Electronics.

Schematic

This is the schematic of the 22 Watt Amp

Parts

Part
Total Qty.
Description
Substitutions
R1139K 1/4 Watt Resistor
C1,C2210uf 25V Electrolytic Capacitor
C31100uf 25V Electrolytic Capacitor
C4147uf 25V Electrolytic Capacitor
C510.1uf 25V Ceramic Capacitor
C612200uf 25V Electrolytic Capacitor
U11TDA1554 Two Channel Audio Amp Chip
MISC1Heatsink For U1, Binding Posts (For Output), RCA Jacks (For Input), Wire, Board

Notes

  1. The circuit works best with 4 ohm speakers, but 8 ohm units will do.
  2. The circuit dissipates roughly 28 watts of heat, so a good heatsink is necessary. The chip should run cool enough to touch with the proper heatsink installed.
  3. The circuit operates at 12 Volts at about 5 Amps at full volume. Lower volumes use less current, and therefore produce less heat.
  4. Printed circuit board is preferred, but universal solder or perf board will do. Keep lead length short.

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Comments

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bor
22 Watt Audio Amplifier
Tuesday, February 12, 2013 1:22:39 AM
this is our project in our school. it's so nice and sounds good too. It is better when you put tone control on it with bass, treble, balance, and master volume...nice!!!!
anonymous
22 Watt Audio Amplifier
Thursday, December 13, 2012 10:54:37 AM
how to attache bass, treble and volume controls with the circuit and also the audio cable?
raad
22 Watt Audio Amplifier
Sunday, June 03, 2012 2:08:51 AM
Is there any substitution for TDA 1554 chip?? Its not available in my area.. :( plz suggest..
anonymous
22 Watt Audio Amplifier
Monday, December 26, 2011 2:42:09 AM
how can i connect a volume control in this circuit..????
anonymous
22 Watt Audio Amplifier
Friday, April 29, 2011 5:16:52 AM
Just to say to all: This is 22 watts PER CHANNEL
alex
22 Watt Audio Amplifier
Saturday, April 09, 2011 9:52:24 PM
reply to: sameguy. Hi there. you need a preamplifier to use a mic. with the amp.
NUR MUHAMMED
22 Watt Audio Amplifier
Tuesday, February 01, 2011 1:12:45 PM
Thank you so much for the circuit diagram.I built the amp it work perfectly. I added LED (as power light), FAN (to cool the IC), DIODE on the positive power line which served as a protection in case polarity is mixed, 100k variable resistor for volume control and i also added Bass and Treble controller.For the power supply i use a PC power supply.All worked very well, so clear sound.I am very happy.Thank you .
Bruce
22 Watt Audio Amplifier
Monday, January 31, 2011 2:31:19 PM
This Amplifier is soo amazing and sounds soo clean..I Love it. The wires I used with the circuitboard were taken from an old telephone wire (excelent conducter). The Heatsink was held tight in place to the IC along with heat transfer paste. An old headphone jack with the wire was used for the left-in & right-in connection. Four 8 ohm speakers were used for the left-out & right-out connections(two for left & two for right) Only thing I need now is to make an attractive case for it and use it with my computer exclusively. My next project will be to build the "12VDC to 120VAC Inverter" which I will use with my Solar Panel Batteries...
Mic
22 Watt Audio Amplifier
Sunday, December 19, 2010 2:15:09 AM
Hi everyone. Instead of using a speaker as output, I want use headphone. Is this possible? I want to solder directly from this diagram of headphone jack http://techpubs.sgi.com/library/dynaweb_docs/hdwr/SGI_EndUser/books/Octane_OG/sgi_html/figures/speaker.headph.port.gif to the amplifier output. Please help me. I want to use my extra headphone. I still don't have money to buy speaker.
nicholas
22 Watt Audio Amplifier
Thursday, October 07, 2010 7:30:57 AM
please i broke the signal ground. will it work?
Ken
22 Watt Audio Amplifier
Wednesday, June 02, 2010 6:17:36 AM
Is this 22 Watts per channel? Thanks
emjhay
22 Watt Audio Amplifier
Monday, May 24, 2010 8:10:10 AM
I've done this in my elecs lab project and it work perfectly. The problem is to supply it with a 220V AC, so i have to create a adapter for the supply. Can you make a circuit with a mixer,a higher output and with a volume control. I liked to add a potentiometer but I don't know where to put it. sorry im a beginner at this.
beermug
22 Watt Audio Amplifier
Sunday, January 17, 2010 1:03:09 PM
HI: I am using Logitech Z5 speakers on my pc, with on-board Realtek ALC889 audio chip. Im looking to amplify the speakers since the on-board chip doesnt put out much. However the Logitech speakers are a USB device, id like to know if i can use this amp with them somehow, or do you know of an amp i can use ? Thanking You :)
CrazyBone
22 Watt Audio Amplifier
Friday, January 15, 2010 10:26:34 PM
Came across this page by googling ta1554q. The IC chip on the amp board I took out of a Boston Acoustics satellite/sub speaker system. I bought just the sub for $.99 at a yard sale, but sounded distorted when I powered it up. disassembled it, found part of the plastic enclosure broken, used the woofer as part of the center channel of my home theater system (sounds awesome 50wrms), and the amp to power the surround tweeters. Bi-amped Infinity 6x9s out of a Caravan, crossed over at 3.5k w/car audio active x-over. Powering it w/18volts, and it hasn't died yet! Laptop power supplies are great for powering devices like this! Find them cheap at thrift stores!
anonymous
22 Watt Audio Amplifier
Wednesday, December 09, 2009 2:45:39 PM
Can you please how to connect the heat sink?
Fred
22 Watt Audio Amplifier
Sunday, October 25, 2009 5:34:21 AM
Do you still need a PCB?
Bobica
22 Watt Audio Amplifier
Sunday, September 27, 2009 2:55:25 PM
Hello, I really like this amp. I want it becose i installed 2*6cm speaker in may backpack and i whan it to powered up. So can this amp powered by 2 9v batteries connected in parallel? I want to play music on it. Sorry for my bad english, im from Croatia. The country bellow slowenia.
sameguy
22 Watt Audio Amplifier
Sunday, September 13, 2009 3:38:34 PM
can this amp be used with a microphone?
John
22 Watt Audio Amplifier
Wednesday, September 02, 2009 7:13:52 PM
Hi, Im a music lover and also fanatic (beginner) of electronic projects. I was interested in testing a 22 watt audio amplifier as part of 1st trial. Can I ask copy of PCB lay-out if is OK to everybody..
JP
22 Watt Audio Amplifier
Saturday, August 22, 2009 12:44:34 AM
How can I insert a volume control ?
Victor G. Saydee
22 Watt Audio Amplifier
Tuesday, August 18, 2009 2:46:03 PM
Thank you ever so much for the circuit diagram. I was so worried about what to build for my senior project and fortunately for me, your 22 watt audio amplifier solved it all. I couldn't find TDA1554 so I used TDA1554Q and it worked so well. I also couldn't find the ceramic capacitor (C5) at the power input so I disregarded it. I added LED (as power light), FAN (to cool the IC), DIODE on the positive power line which served as a protection in case polarity is mixed) and it was all so good. It worked very well, so clear and little distortion. Thanks for the good work man...
Heath
22 Watt Audio Amplifier
Saturday, August 08, 2009 9:52:56 PM
Just built this circuit as an amplifier to busk with. Having got my electronic qualifications some 25 yrs ago and by shear fluke ending up in management it was fun to use a soldering iron again!!!! also to end up with something that worked at the end was an unexpected bonus. Many thanks and Kind Regards. Heath.
lennox jones
22 Watt Audio Amplifier
Friday, July 24, 2009 11:39:35 AM
i built the amp it work prefectly in addition it was my school project i install 1.fan 2.110 220v ac 3.12dc 4.two 50k variable resistor for volume control
edd
22 Watt Audio Amplifier
Tuesday, July 21, 2009 10:36:32 AM
hey doug can you send me the layout copy.....thanks. I would like to try to build this Amp....looks good.
anonymous
22 Watt Audio Amplifier
Sunday, June 28, 2009 7:00:39 AM
the circuit is work but amplifier gives noise.what it's a reason i add a fan above heat sink its very cool but still make noise
Matt
22 Watt Audio Amplifier
Tuesday, May 19, 2009 11:16:31 AM
I just took this camping, we were running it off a 32 amp hour battery with 2x15 watt solar panels. This amp only drew 1 amp of power! We played music all night and all day, even with the music going the batteries charged back to full. Very impressive.

(Editor's notes: Of course, 1A at 12V is only 12W. So run a lower impedance speaker to get closer to 20. Or a higher supply voltage.)

anonymous
22 Watt Audio Amplifier
Monday, May 18, 2009 9:27:58 AM
This works better than I expected!
doug
22 Watt Audio Amplifier
Sunday, May 03, 2009 7:38:33 PM
If anyone is looking for a PCB layout for this, I have one. Email me if you would like a coppy.
anonymous
22 Watt Audio Amplifier
Friday, April 03, 2009 5:25:12 AM
How are the pins numbered on the tda1554??? Other people have already asked this but i did see a reply, and have searched EVERYWHERE on the google machine and can't find the answer.
wasee
22 Watt Audio Amplifier
Sunday, March 22, 2009 1:09:25 PM
How can i insert a volume control in this cct ?
sankalp
22 Watt Audio Amplifier
Saturday, March 21, 2009 5:40:50 AM
yes ,this circuit works for any type means any ohmic speakers
Nicholas
22 Watt Audio Amplifier
Thursday, March 19, 2009 10:37:07 AM
Works Like a charm. i even put in a power on/off switch, and a cooling fan, and integrated it all into a housing. The finished circuit is about 3" x 4". Well mine atleast.
brandon
22 Watt Audio Amplifier
Monday, February 23, 2009 4:06:24 PM
Haha it really does work, and it really does sound very good. i didnt have any perf board or anything, i just soldered the components together on a piece of pcb ( no traces ) and smothered it in epoxy. driving 4 8 ohm speakers... TOO LOUD and it doesn't distort.
Bob
22 Watt Audio Amplifier
Sunday, February 08, 2009 6:45:24 PM
Hi! i wonder if its 22w/ch or its just 11w/ch. But anyway, i am more interested in building a hi power bridgeable audio amp. Can u feature a ckt disgram of a 200w bridge transistor amp? Thanks a lot!
Turbobob_01
22 Watt Audio Amplifier
Monday, January 26, 2009 10:41:31 AM
I made this circuit to power my mp3 speakers in my car and it works! My only problem is that when I turn up my mp3 player above 3/4 volume it starts to cut out. I have a great heat sink and know that is not the problem. I am using a TDA1554Q chip. Any advice to improve on this?
melvin dinnmmelvinonymous
22 Watt Audio Amplifier
Friday, January 23, 2009 8:59:04 PM
I wish to make 10 of these with my students who are 15 years old. can some body tell me what are the possible diffculties / problems. Where to source all the components and other necessary parts . I am in New Zealand.
anonymous
Volume control
Thursday, January 15, 2009 5:32:56 AM
You need a changable resistor befor the circuit. you can use two mono for the channels, or a stereo. It's better. it is only one channel: _____ ---------------------| R |-------| GND IN ---------- | ----------- OUT if you turn the R to in, it's full volume.
anonymous
22 Watt Audio Amplifier
Monday, January 05, 2009 1:20:21 AM
tda1554 works well
anonymousTurbobob
22 Watt Audio Amplifier
Sunday, January 04, 2009 12:52:27 AM
I just ordered the parts from digikey.com and am anxious to use this circuit to amp my mp3 player to the front speakers in my car. When it is done I will post my success. I looked for about 24 hours worth of circuits and decided this is easiest to do. Thank you for this site. Turbobob
anonymous
22 Watt Audio Amplifier
Thursday, December 11, 2008 6:22:18 AM
The best power source is an old PC power supply. I made a change to an old one, i have 13,8V output with 15 amperes. Works perfect, without any noise.
Raghs
22 Watt Audio Amplifier
Friday, November 14, 2008 9:17:42 AM
Can anyone tell me how to insert a volume control in the circuit?? I am planning to use this circuit as a car amplifier, using my cellphone as input to the amp..will this work?? Pls advice
anonymous
22 Watt Audio Amplifier
Wednesday, October 29, 2008 6:27:11 AM
if i linked the output of the right channel to the input of the left channel, would the amp be 44 watt mono, or would it go BANG
bala
22 Watt Audio Amplifier
Monday, September 29, 2008 3:12:57 AM
it works perfectly...........but some problems in volume control........please help me..
asalmannonymous
22 Watt Audio Amplifier
Wednesday, September 17, 2008 10:12:21 PM
my amp made up of la4440 dosent give 20 watt what should i do
Theo
22 Watt Audio Amplifier
Monday, September 15, 2008 8:18:10 AM
The TDA1554A is not available insted there is TDA1554Q can this be used for this circuit.
anonymous
22 Watt Audio Amplifier
Wednesday, August 27, 2008 8:41:10 PM
I also have issues with the volume control, were and wich pot should be used, can it be eq with pots for trebble and bass, and if i cant found the TDA155, wich other can i use?
v.vinoth
22 Watt Audio Amplifier
Wednesday, July 23, 2008 6:24:14 AM
the circuit is work but amplifier gives noise.what it's a reason did you give a details about the circuit or please insert working principles on the page
LJuban
22 Watt Audio Amplifier
Tuesday, July 01, 2008 8:20:12 PM
This tda work perfectly, i assembled several and all worked ok. it cost less than 5$.
Josiah
22 Watt Audio Amplifier
Monday, June 30, 2008 6:17:55 AM
PLEASE HELP ME!!!! Can you email me the pin configurations? And how many amperes is required for the resistor? please reply immediately
anonymous
22 Watt Audio Amplifier
Friday, June 27, 2008 2:31:41 PM
What would be a good source for this circuit? I think a couple of batteries nor an small cellphone charger will do well the 5 amp
anonymous
22 Watt Audio Amplifier
Monday, June 09, 2008 11:42:09 PM
Reply to walencho: If you popped a cap either you reversed the polarity of the capt, the power supply or have (had) a capacitor that was not rated for 25volts ( or atleast 12v + 25% ), or put more than 25volts at the power terminals. Check all of your connections. Chances are, if you connected the supply backward, you may have damaged the chip. Too much current is not the issue in your case, infact, given that this is an amp, you'll need some current to drive the output. Use a car battery or 12v gel battery to test it with..
Hamdan
22 Watt Audio Amplifier
Monday, June 09, 2008 7:25:22 AM
I am also having difficulty in locating the volume controller. Is it using 10 k ohms doubble pot or 100k ohms.Some circuit i have notice that there are sub volume & tribble controler. Where should i add in and what pot should i use.
Bart
22 Watt Audio Amplifier
Wednesday, June 04, 2008 8:34:26 AM
Hi walencho, please check the polarity of the capacitors since Electrolytic Caps dont like to be connected the wrong way around. The schematic seems fairly straight forward, it would be good to get a copy of the Datasheet for the TDA 1554 since this will assist you to apply the correct potentials to the inputs of the IC. Regards Bart South Africa
heatsink
22 Watt Audio Amplifier
Sunday, June 01, 2008 10:12:55 AM
very good circuit, perfect for my car. i make two of these, joined together and kaboom, i have a low cost but high quality amp for my car. thanks a lot, more power and continue doing useful circuits.
walencho
22 Watt Audio Amplifier
Monday, May 12, 2008 6:55:08 AM
When i built the circuit, it didn't work. To further compound issues, the 2200uF capacitor blew up. What could be wrong and what is the solution. Pls feel free to mail me. NB: My lecturer says the current is too BIG! Is he wrong?
LEHJ
22 Watt Audio Amplifier
Sunday, May 04, 2008 10:34:51 PM
DO YOU HAVE A SCHEMATIC OF 1000 WATTS AUDIO AMPLIFIER
LEHJ
22 Watt Audio Amplifier
Sunday, May 04, 2008 10:32:39 PM
Where is the pin code of TDA 1554 two channel audio amplifier
Christiaan
22 Watt Audio Amplifier
Wednesday, April 30, 2008 6:32:08 PM
Thanks for the great circuit. Works like a charm
benson
22 Watt Audio Amplifier
Tuesday, April 29, 2008 11:36:12 AM
thanks gays it is the easiest to set up and greate performance I've used it 4 6yrs now and no problems. just dont short the speaker terminals
Gad
22 Watt Audio Amplifier
Tuesday, April 29, 2008 5:47:32 AM
Please can you show me how to calculate the gain of the amplifer and other relevant calculations. Thank you
nguyen
22 Watt Audio Amplifier
Sunday, April 20, 2008 8:32:16 AM
thanks for yours circuit, it's very useful for me i used it for my project and it operate perfect
Kaushik
22 Watt Audio Amplifier
Sunday, April 13, 2008 10:43:36 AM
Just look at the comment by "anonymous". He asks if this can play MP3? You fool how dumb you are? Its not a DAC, nor does it contain any microprocessor to process MP3 Files. It just amplifies the incoming message signal. You have to connect it to any audio source (or any other source whose signal u want to amplify). K, leave it. People like you will not understand these things. And can't you see those 2 inputs and 2 output lines? why the fuck did u ask that? Even small child can guess that. If you want more speakers, add more op-amps in similar manner. Have some logical understanding.
anonymous
22 Watt Audio Amplifier
Sunday, April 13, 2008 9:14:53 AM
For volume use a dual gang 100k pot with the middle pins going to C1/2 (open side of caps not amp side), signal in going to the right hand pins and 0v to the left hand pins (ref pins facing downward).
RAHUL BADRIKE
22 Watt Audio Amplifier
Saturday, April 05, 2008 4:21:57 AM
IS THIS IC TDA 1554 AVAILABLE IN INDIA?
anonymous
22 Watt Audio Amplifier
Thursday, April 03, 2008 11:28:43 AM
Please can i use the TDA 1554 chip instead of the TDA1554Q and additionally, is there any difference between the two.
rey
22 Watt Audio Amplifier
Monday, March 31, 2008 10:40:33 AM
why does the diagram dont work properly' can you please teach me how!
MRBrazilian
22 Watt Audio Amplifier
Saturday, March 29, 2008 7:15:46 PM
NICE ONE MAN! works great..... i've just added a 10K DoublePot for volume control. The middle of POT goes on IN for each channel and the signal goes on one side and the ground to the other. Thanks,
Ashley
22 Watt Audio Amplifier
Thursday, March 27, 2008 3:03:15 AM
Yeah where does the volume control connect?
thomas
22 Watt Audio Amplifier
Monday, March 24, 2008 6:45:28 AM
THANK YOU FOR SCHEMATIC
mhar
22 Watt Audio Amplifier
Sunday, March 16, 2008 1:55:01 AM
where is the volume control connected sir? thanks....
lehj
22 Watt Audio Amplifier
Wednesday, March 12, 2008 2:07:10 AM
thank you for the schematic
joegie
22 Watt Audio Amplifier
Thursday, March 06, 2008 2:09:01 AM
any boby can send me and diagram of 300 watt apm. thank you so much! god bless......
anonymous
22 Watt Audio Amplifier
Thursday, March 06, 2008 2:06:40 AM
thank u for your circuit! b/cuz of this circiut i bild an 22 watt amp thanks god bless......
Rango
22 Watt Audio Amplifier
Tuesday, March 04, 2008 4:46:42 PM
no sound coming out of speakers :( i do not understand why. I conected every component like it is in scheme...any sugesstions...
janrel
22 Watt Audio Amplifier
Sunday, March 02, 2008 7:37:39 PM
thanks for this circuit because we use this for our project in electronics 2.
Alex
22 Watt Audio Amplifier
Wednesday, February 27, 2008 7:28:01 PM
I'm having a hard time finding a power supply. I can't seem to even find a transformer to build my own. where can i go, or is there a cheap circuit i can build?
anonymous
22 Watt Audio Amplifier
Monday, February 25, 2008 2:40:17 PM
What do i need to do to allow this to run off an mp3? also, how many speaker outputs does this support, and can changes be made to support more?
bright abrincia
22 Watt Audio Amplifier
Tuesday, February 19, 2008 1:02:22 AM
iT wOrks.!!
anonymous
22 Watt Audio Amplifier
Sunday, February 10, 2008 2:21:15 PM
i too would like to know if a preamp is needed wit an Ipod?
binidh
22 Watt Audio Amplifier
Tuesday, January 22, 2008 9:16:14 AM
can any body pls mail me some more powerfull amplifier design then that of this one......... pls
Timo Musee
22 Watt Audio Amplifier
Thursday, January 17, 2008 3:12:38 AM
Thie amp is fab pliz send me a 200 watts amp circuit diagram
anonymous
22 Watt Audio Amplifier
Saturday, January 12, 2008 10:13:24 AM
if was to build this 22 watt amp circuit would a pre amplifier be needed if i was to use the headphone jack from my Mp3 player?
anonymous
22 Watt Audio Amplifier
Saturday, January 12, 2008 10:11:08 AM
The circuit looks great and should be inexpensive, but a power supply capable of driving it is not going to be cheap. I was wondering what those of you who are already using the amp are powering it with?
filipino hobbyist
22 Watt Audio Amplifier
Tuesday, December 18, 2007 4:04:27 AM
it really works great and i love it
anonymous
22 Watt Audio Amplifier
Sunday, December 02, 2007 5:38:30 PM
I made this circuit for my PC on February, 1998. Now, almost ten years later, I'm still using it. It's great.
Taimmy
22 Watt Audio Amplifier
Saturday, November 24, 2007 2:36:49 AM
man its a good work !!! can u help in making fm transmitter and receiver on vero or pcb board ??
nyaga munyi.
22 Watt Audio Amplifier
Friday, November 16, 2007 6:39:28 AM
thanks a lot for this cct. it out is very high and it cheap. just try it ,you will be amazed on what it can do.
Jimboy O. Plandez
22 Watt Audio Amplifier
Friday, November 16, 2007 1:40:29 AM
I dont know on how to connect the ic to other components. I dont know to connect the pins of the IC to other components.
jimboy
22 Watt Audio Amplifier
Thursday, November 15, 2007 9:19:11 PM
For me it works perfectly, I found the same schematic long time ago from another source, with the same values for the resistors/capacitors. It works also with stereo input and quad output, for this case the speakers are connected between the pins 6,8,10 and respectively 12 and the ground. I used no printed circuit board or veroboard, I simply connected the components on the TDA chip. But I plan to make a board, it's safer.
jim plandez
22 Watt Audio Amplifier
Thursday, November 15, 2007 9:11:19 PM
I dont know what is the connection within the ic and the other components. Kindly show up the exact drawing or the connection of the components not in the schematic diagram. Your website is great, it helps me lot when I'm doing my projects in school. Thanks!!!!
Blessings Makoza
22 Watt Audio Amplifier
Thursday, November 15, 2007 2:17:28 PM
The circuit diagram is excellent and it works perfect. Quality sound, good to listen to.
anonymous
22 Watt Audio Amplifier
Wednesday, November 14, 2007 1:27:33 AM
can i have the example of the pcv???? plz

(Editor's notes: There isn't one. Read prior comments.)

hypomicro
22 Watt Audio Amplifier
Monday, November 05, 2007 10:23:46 AM
works just fine, and it's great ;)
Luc
22 Watt Audio Amplifier
Sunday, November 04, 2007 12:30:35 PM
For me it works perfectly, I found the same schematic long time ago from another source, with the same values for the resistors/capacitors. It works also with stereo input and quad output, for this case the speakers are connected between the pins 6,8,10 and respectively 12 and the ground. I used no printed circuit board or veroboard, I simply connected the components on the TDA chip. But I plan to make a board, it's safer.
anonymous
22 Watt Audio Amplifier
Sunday, November 04, 2007 12:01:42 AM
The 22 watts amplifier is really good but i can't see the PCB foil pattern of this amplifier. Can i have the PCB foil pattern of this amplifier?

(Editor's notes: Clearly, there is no PCB pattern available.)

Luis F.
22 Watt Audio Amplifier
Tuesday, October 30, 2007 1:17:52 AM
I tried to do it on a breadboard using a 12V car battery and it never worked, but I wonder if maybe someone could send me the pcb of this circuit.
anonymous
22 Watt Audio Amplifier
Sunday, October 28, 2007 1:48:37 PM
Hey. This looks similar to a 16W bridged amp I'm building now. Cool. You have some good resources on your webpage.
anonymous
22 Watt Audio Amplifier
Saturday, October 27, 2007 10:41:51 AM
what is the inderppendance of the out put on this circuit
pee
22 Watt Audio Amplifier
Friday, October 26, 2007 11:15:37 AM
hi its doesnt work..i do anithing its on the schematic..
anonymous
22 Watt Audio Amplifier
Friday, October 19, 2007 11:01:42 PM
i bought all the components for the circuit but i can't figure out the pine arrangement on the ic TDA1554. Can someone help me out?
MICHEL
22 Watt Audio Amplifier
Friday, October 19, 2007 3:13:10 AM
How do u do? can i please get another alternative for the TDA1554 two channel audio amp now? plsssssssssssss help my projet is due
Joe Parker
22 Watt Audio Amplifier
Tuesday, October 16, 2007 4:48:36 AM
hi my name is joe parker and i like this amp
Ash
22 Watt Audio Amplifier
Friday, October 05, 2007 8:51:15 AM
Hey i just wondering if anyone could send me a design for a Printed Circuit Board on this Amplifier?
SURESH
20 Watt Audio Amplifier
Friday, October 05, 2007 8:00:15 AM
can anybody send me all the calculation & design step for design of 20 watt audio amplifier?
yogesh
22 Watt Audio Amplifier
Thursday, October 04, 2007 8:40:35 AM
can anybody send me complete design with calculation of 22 watt audio amplifier immidiately?
amol
22 Watt Audio Amplifier
Wednesday, October 03, 2007 5:46:49 AM
I want to thank you,this for helpful for car audio amplifier ,can send same thing for woofer?
jun rana
i need complete schematic diagram of 200 wattts
Monday, October 01, 2007 4:43:04 AM
i need complete schematic diagram of 200 watts sterio main amp any body can send me thanks!! junran
Somnath
22 Watt Audio Amplifier( How to design Vibrating speaker ???)
Thursday, September 27, 2007 1:07:48 AM
How to design Vibrating speaker ??? How is the design of connecting speaker with woofer(i.e tell me more about watt distribution .for eg..17W for woofer & 5 watt for speaker...) please reply to this @ my mail address. thanks in advance.
jay
protection circuit
Tuesday, September 25, 2007 11:41:37 PM
hey i need the protection ckt .when i m using this amp in my car and taking vcc from thecar battery and if there is short ckt then my car battery will explode. so want some protection ckt.
munish
125 Watt RMS Audio Amplifier
Friday, September 21, 2007 4:44:27 AM
please provide me the circuit for the 125 Watt RMS Audio Amplifier.
Joysen
22 Watt Audio Amplifier
Monday, September 17, 2007 9:33:43 AM
Your website is dynamics that's great...here i have found everything i wanted. I want to thank you for creating that web.
anonymous
22 Watt Audio Amplifier
Saturday, September 15, 2007 9:22:06 PM
WHERE I CONNECT THE VOLUME CONTROL ,BASS AND TRRIBLE
michael Baring
20 watts amplifier using Lm2005
Sunday, September 09, 2007 11:38:30 PM
your website is to good
ali
200 watt
Wednesday, September 05, 2007 4:25:07 AM
please desing on my , audio amplifier 200 watt or 100w or 150w 0r......
mike
22 Watt Audio Amplifier
Tuesday, September 04, 2007 4:49:00 AM
hope that there is also indcated with tone control and it so nice also thank you
IMRAN AHMAD
DC VOLD STEREO AMPLIFIRE
Sunday, August 26, 2007 12:14:44 PM
IMRAN AHMAD HI, PLEASE YOU TELL ME ABOUT STEREO AMPLIFIRE . AND YOU SEND ME CURCUIT DIAGRAM. THANKS
amir
20 Watt Audio preamplifier and Amplifier
Sunday, August 26, 2007 7:00:25 AM
i need : 20 watt audio preamplifier and amplifier for my inter i-phon. thanks
anonymous
22 Watt Audio Amplifier
Wednesday, August 22, 2007 10:21:36 PM
Equivelant IC would be a NTE 7114. The TDA1554 is no longer manufactured.
Osobu Charles Muyiwa,from Nigeria
22 Watt Audio Amplifier
Saturday, August 18, 2007 6:49:31 AM
This site have been wonderful,can i have some equivalents ICs because i can not get the original IC.Thanks
anonymous
22 Watt Audio Amplifier
Tuesday, August 14, 2007 12:08:57 AM
can i get the datasheet?
INNOCENT
22 Watt Audio Amplifier
Friday, August 03, 2007 11:07:43 PM
i am from Nigeria. if i could not found the ics that are involved, then can i used the equivelent?. if yes, then i will like to know the equivalences. than you.
Brett Matress
22 Watt Audio Amplifier
Thursday, August 02, 2007 1:26:14 AM
I would like to profess my love for you. The enjoyment I experienced after building this amplifier; the sheer euphoria is overwhelming. Call me.
anonymous
22 Watt Audio Amplifier
Thursday, August 02, 2007 1:23:23 AM
sick mate
anonymous
22 Watt Audio Amplifier
Tuesday, July 31, 2007 7:21:47 AM
can i connect the left output to the right input so i can have a one channel double power speaker?
daniel istifanus
22 Watt Audio Amplifier
Tuesday, July 31, 2007 6:25:36 AM
pls send me how to connent 5, 4, 3, 11, 14, 13 and 7.

(Editor's notes: Huh?)

daniel istifanus
22 Watt Audio Amplifier
Thursday, July 26, 2007 9:37:16 AM
thank for such a wanderful jop you are doing.
anonymous
22 Watt Audio Amplifier
Wednesday, July 18, 2007 6:38:39 PM
what Ic's can i substitute. the place where i do all my electronics shopping only has TDA1905,2005,2020, and 2030 please help
KITUU
22 Watt Audio Amplifier
Tuesday, July 17, 2007 8:14:20 AM
Thanks alot for such a website atleast am able to turn my class work to practical stuff .kituu in KENYA
Junkie
22 Watt Audio Amplifier
Sunday, July 15, 2007 1:39:29 PM
HI anybody have the pcb ? please email me

(Editor's notes: No. Further enquiries about PCB patterns will not be posted.)

ace
22 Watt Audio Amplifier
Sunday, July 15, 2007 12:21:01 AM
this circuit is unbelievable.... Could you please send me the PCB layout for this amplifier? Thanks
anonymous
22 Watt Audio Amplifier
Saturday, July 14, 2007 11:13:18 PM
Can you send me the PCB lay-out of this ckt. thanks, Ace

(Editor's notes: Nope.)

balajinonymous
22 Watt Audio Amplifier
Thursday, July 12, 2007 4:39:42 AM
how many watt use this
nhadzki
22 Watt Audio Amplifier
Thursday, July 12, 2007 12:40:03 AM
who can send me a simple circuit of 50 watt amplifier???with a supply of 12v.tanks
nhadzki
22 Watt Audio Amplifier
Thursday, July 12, 2007 12:37:23 AM
this circuit is unbelievable....my friend use this circuit as a hobby and business...tanks to this project..
Tiago
22 Watt Audio Amplifier
Wednesday, July 11, 2007 11:24:04 PM
Hi! Could you please send me the PCB layout for this amplifier? Thanks!

(Editor's notes: There is not one available. Further comments of this nature will not be posted.)

anonymous
22 Watt Audio Amplifier
Tuesday, July 10, 2007 3:33:30 AM
kindly post on the site a block diagram as well as the component layout on the PCB of this circuit. urgent.thanks.
Tiago
22 Watt Audio Amplifier
Tuesday, July 10, 2007 12:07:04 AM
Hi! Could you please send me the PCB layout for this amplifier? Thanks!
prabhu
22 Watt Audio Amplifier
Saturday, July 07, 2007 1:59:00 AM
i want amplifier circuits details
mpintshi
22 Watt Audio Amplifier
Saturday, June 30, 2007 4:05:26 AM
it looks 2 simple hope its worth spending on. is there anyone who has done it yet?
ryan
22 Watt Audio Amplifier
Friday, June 29, 2007 5:29:34 AM
i want to know if the out-put power is 22 watts per chanel or it is only 11 watts per chanel please can u giv me the circuit diagram for LA4440 40 watts per chanel...tnk
anonymous1234
22 Watt Audio Amplifier
Wednesday, June 27, 2007 6:42:46 PM
it lokss very easy i am abaut tp try it y just bought all the parts
Aamir
22 Watt Audio Amplifier
Tuesday, June 26, 2007 6:04:26 AM
This is good circuit we get information from it and make it easy Thanks
vik mabeya
22 Watt Audio Amplifier
Monday, June 25, 2007 6:40:36 AM
pliz send me a circuit diagram for the LA4440. Thanx in advance.
anonymous
22 Watt Audio Amplifier
Thursday, June 21, 2007 10:24:54 PM
i have an available 9v ac adaptor here.can i use this to power up this project?please advice...many thanks
anonymous
22 Watt Audio Amplifier
Thursday, June 21, 2007 9:19:51 PM
i got only TDA 1554q.TDA 1554a is not available. is the circuit still the same?can you pls give me the circuit diagram if ever it's not the same and please include the pcb lay-out.many thanks....
nhadzki
22 Watt Audio Amplifier
Thursday, June 21, 2007 3:20:53 AM
can anyone who can send me a pcb layout for this circuit???pls pls pls i need this amplifier for my motor bike honda wave 100R pls....ill w8 for your reply pls...
irving
22 Watt Audio Amplifier
Tuesday, June 19, 2007 9:10:35 AM
could you send me a copy of pcb layout of 22 watt amp
irving
22 Watt Audio Amplifier
Tuesday, June 19, 2007 8:57:10 AM
could you please send me the pcb layout of your 22 watt amplifier..... i don't know how to create my own layout..... thanks....
syam
22 Watt Audio Amplifier
Sunday, June 17, 2007 1:51:35 PM
TDA 1554A is not available in my place,TDA 1554Q is available can u pls sent me the circuit diagram
anonymous
22 Watt Audio Amplifier
Wednesday, June 13, 2007 4:54:35 AM
tell me about speaker ampedance
syam
22 Watt Audio Amplifier
Tuesday, June 12, 2007 1:11:29 PM
i got only TDA 1554Q chip ,can you pls sent its 2 channel circuit diagram
JAYAN
22 Watt Audio Amplifier
Saturday, June 02, 2007 2:25:55 AM
I want design diagram to make PCB.
anonymous
22 Watt Audio Amplifier
Thursday, May 31, 2007 9:28:26 AM
could you change the TDA1554 for a LM4780?
anonymous
22 Watt Audio Amplifier
Thursday, May 31, 2007 4:30:19 AM
circiit looks good but how will we control sound volume
srinivas
22 Watt Audio Amplifier
Thursday, May 31, 2007 2:32:19 AM
can it be used for dvd player how to connect to it
Mário Molnár
22 Watt Audio Amplifier
Tuesday, May 29, 2007 10:10:46 AM
Its great!!!!!
mireille
22 Watt Audio Amplifier
Monday, May 28, 2007 8:56:31 AM
can u send me the working process of this circuit
anonymous
22 Watt Audio Amplifier
Sunday, May 20, 2007 4:28:06 PM
this is a very simple power amp circuit diagram i wiil try it
anonymous
22 Watt Audio Amplifier
Tuesday, May 15, 2007 8:48:22 PM
Gnd should be to the negative terminal of the power supply
fishmonger
22 Watt Audio Amplifier
Wednesday, May 09, 2007 8:57:03 AM
am a beginner from a dfferent field other than electronics. can you tell me what the ground means
anonymous John Louie
22 Watt Audio Amplifier
Monday, May 07, 2007 10:38:14 PM
This is not applicable for my radio which is not good
Weeble
22 Watt Audio Amplifier
Friday, May 04, 2007 2:54:34 PM
if anyone wants a PCB designed from a circuit design if you e-mail me with the a picture of the circuit and any other specs (like maximum size of PCB etc.) and i will design it for you and send you the export of it in .wmf .plt .emf .dxf .dv3 .dtt .dtd .dtl and .aff Also if i figure out a way to accurately screenshot or scan it to scale then i will also do that. - weeble
anonymous
22 Watt Audio Amplifier
Tuesday, May 01, 2007 4:45:19 PM
What is Gnd?
aces
22 Watt Audio Amplifier
Monday, April 23, 2007 1:32:47 PM
can have a pcb lay-out of this amoplifier
anonymous
22 Watt Audio Amplifier
Saturday, April 21, 2007 11:14:13 AM
what is left in and right in. ive read it from your editors note but i dont really get it

(Editor's notes: It's where you input your audio for the left and right channels.)

lLeo A. Agustin
22 Watt Audio Amplifier
Thursday, April 19, 2007 8:51:18 AM
i have heard and experiment it and it is truly amazing. can also please send me a pcb design i have a hard time designing it. thank you. ps hope you send a more powerful amps
PEDMAX35
22 Watt Audio Amplifier
Thursday, April 19, 2007 7:21:04 AM
Pls.., put the spicific value of the components in the schematic diagram.

(Editor's notes: Scroll up about 6 inches to the parts list. There you go.)

midnight hunter
22 Watt Audio Amplifier
Wednesday, April 18, 2007 3:17:48 PM
Can I use the TDA1555 instead of TDA1554? I only have TDA1555. Will this work? How about the compatibility? Sorry for my english, I don't speak english very well, but I can understand what you all write. Thanks. Cheers!

(Editor's notes: Check the datasheet.)

tony
22 Watt Audio Amplifier
Tuesday, April 17, 2007 12:00:15 AM
Please show me the pin #
anonymous
22 Watt Audio Amplifier
Sunday, April 15, 2007 9:58:29 AM
CAN THIS WORK AT PERFORATED BOARD?
LAKAY
22 Watt Audio Amplifier
Tuesday, April 10, 2007 10:30:44 PM
how do i remedy the circuit sometimes heatsink is so hot i even put bigger oversize heat sink. bu it doesnt help a lot
anonymous
22 Watt Audio Amplifier
Saturday, April 07, 2007 3:19:24 PM
cool
amit
22 Watt Audio Amplifier
Friday, April 06, 2007 1:35:46 AM
it's very interseting.And u doing a good job of this.So that I am really say THANKS to u for this. But I have a reaqest to u that if u want plz send me some of more circuits of MAJOR PROJECTS of ELECTRONICS field. THANKS
anonymous
22 Watt Audio Amplifier
Tuesday, March 27, 2007 7:17:56 AM
this rocks
James
22 Watt Audio Amplifier
Saturday, March 24, 2007 9:53:19 PM
i'm not Aron, but I may be able to answer a couple questions. Left in - right in, is for stero inputs coming from your componet Heat sink, I havent actually seen the chip but on my circuts (CNC), Some can bolt on through existing screw holes on the circut, Some I drilled holes in the circut board and screwed through it to the "over sized" heat sink. I'll send you a bmp. if you want. The 5 amp Current it draws has nothing to do with your supply IF your supply has more, it takes what it needs and leaves the rest., If you have less it wont be as loud.

(Editor's notes: Sweet, thanks.)

anoop
22 Watt Audio Amplifier
Thursday, March 22, 2007 8:28:20 AM
what do you mean by left in & right in ?

(Editor's notes: Signal inputs.)

anonymous
22 Watt Audio Amplifier
Monday, March 19, 2007 11:51:43 PM
can you please demonstrate how to connect the heatsink
laxman
22 Watt Audio Amplifier
Saturday, March 17, 2007 2:08:09 PM
what is the meaning of right in & left in
anonymous
22 Watt Audio Amplifier
Monday, March 12, 2007 3:25:49 AM
add also the circuit analysis of this project so it will be easier for us to understand the operation of your project.
Raider
22 Watt Audio Amplifier
Friday, March 09, 2007 5:26:41 PM
Aron Cake Hey Man I am a Beginner In The Electronics Feild. I want to ask You That Are You Sure That This Circuit Will Operates fine With 12v And 5a Power Supply Also I Have A Power Supply Of 12v and 8a Please Tell Me Is There Any Effect On IC If I Give This Power Supply Of 12v And 8a. Please Reply Soon...........Thank You!!!!1
Pedro Almeida
22 Watt Audio Amplifier
Wednesday, February 28, 2007 4:51:03 PM
are you sure it really drains that amount of current? (and i should build a font with a 12V / 5A tranformer?) thanks
muhammed
22 Watt Audio Amplifier
Wednesday, February 28, 2007 9:50:25 AM
i have no access to printed circuit board but i hope the normal vero board will do.if you have any objection to this,mail it to my box. i will want you send me a circuit diagram of an automatic battery charger.

(Editor's notes: Your best bet is to ask technical questions in the forum instead of here.)

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