Black Light

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This circuit is a simple ultraviolate light that can be powered by a 6 volt battery or power supply (such as the power supply on the "Circuits" page) that is capable of supplying 1 or more amps.


This is the schematic of the Black Light

PCB Layout and Parts Placement

This is the parts placement and printed circuit board layout for the Black Light


Total Qty.
C110.0047uf Mono Capacitor
C210.1uf Disc Capacitor
D1, D221N4007 Diode
FTB1Filtered Blacklight Tube
IC11555 Timer IC
P1110k Trim Pot
Q11TIP30 PNP Power Transistor
R11470 Ohm Resistor
R21270 Ohm Resistor
S11Slide Switch
T11Medium Yellow Inverter Transformer
MISC1IC Socket, Heat Sink For Q1, Screw, Nut, Wire and PC Board


  1. P1 changes brightness of the black light tube.
  2. Transformer T1 and the blacklight tube are available from The Electronics Goldmine (see "Where To Get Parts"

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Black Light
Thursday, April 07, 2011 12:17:31 PM
can i sat a remote control for ordinary tube light how. explain with videos step by step please
Black Light
Friday, March 12, 2010 9:47:25 AM
I've heard that it's impossible to find T1. To make one self, you have to wind: Primary:3t 0.375 mm magnetic wire Secondary:175t 0.15 mm magnetic wire on a toroidial core
abdul hadi
Black Light
Sunday, September 06, 2009 10:31:21 AM
to louis :the barbers put the scissors and trimmer in the ultra voilet light to sterilize them so prevention of disease this is compulsory in some countries ..(mine one too)
Black Light
Sunday, March 29, 2009 12:43:38 AM
could this be used with a color organ?????
Black Light
Sunday, September 28, 2008 10:32:09 PM
Why do barbers use black light for storage of hair clippers?
Black Light
Saturday, February 09, 2008 5:30:43 AM
hahahaha same one as in Electronic Games 4 the Evil Genius :D
Black Light
Monday, December 31, 2007 7:31:07 AM
i dont get what this thng is?
Black Light
Tuesday, November 27, 2007 10:29:37 PM
who invinted th black light
Black Light
Friday, November 02, 2007 12:20:10 PM
How long does a stain remain that can be seen under black light? Is there any reference materials on this fact.
Black Light
Monday, October 29, 2007 4:30:02 PM
What is a black light
Black Light
Thursday, October 18, 2007 5:00:35 AM
Why buy one from the shop? That's just boring, it's much more interesting to make your own.
Black Light
Sunday, September 16, 2007 9:54:18 AM
nice . wht i thought so long to design
jack edwards
Black Light
Thursday, September 13, 2007 7:33:13 AM
Black Light
Saturday, September 01, 2007 5:36:15 AM
excuse me,,, which type of transformer and how many amperes and volts.. what about simple neon lamp.,, what is the useful of trim pot
Black Light
Monday, August 20, 2007 4:16:39 PM
well the black light is the good projett but my be some thing make this more powerful
Tunde Tahiru
Black Light
Monday, July 02, 2007 8:04:35 AM
pls Sir i need circuit diagram for ELECTRONIC CANDLE,instruction & how it look like after construction. Thanks.
Black Light
Friday, June 22, 2007 10:41:03 PM
Are there different levels of Black Light detection; if so , what are they and a few examples of items detected whithin each level. I'm mainly interested in phosphor and bacteria in/on clothing. thanks William
Black Light
Tuesday, June 12, 2007 1:54:43 AM
Transformer #G993 is out of stock at Electr. Goldmine. This seems to be a permanent condition.
Black Light
Saturday, May 26, 2007 4:23:07 PM
I believe it was Elmer Miller who invented the black light.
Black Light
Sunday, May 20, 2007 8:19:34 PM
where can i get the transformer in Los Angeles or can we use a different one?
Black Light
Thursday, April 19, 2007 4:17:34 PM
Hello Can I get more info on the transformer? Like a part number or input output of the transformer How long is the tube or how long of a tube can I use? Can I use a white florescent bulb nested of a black light?
Black Light
Thursday, April 19, 2007 10:50:25 AM
I would also like to know what is the exact part for the transformer? Thanks in advance to anyone who can help me out.
Anwar Choucair
Black Light
Monday, April 16, 2007 4:26:40 PM
hello, i want to know that are the effects of germination on seeds/beans, when you expose them to ultraviolet light/ black light, i kno the seeds or plants grow faster but how does it work?
Black Light
Monday, April 16, 2007 12:37:56 PM
wat are the specs for the medium yellow inverter transformer
Black Light
Saturday, April 14, 2007 2:39:28 AM
hello... i would like to know; who invented the black light? im doing an assignment on it and ive searched it a hundred times and no website tells who invented it! have any ideas?? thanks
Black Light
Monday, March 19, 2007 7:12:14 AM
I am from Brasil and I would like to have more specifications about the "yellow inverter transformer". What are the voltage ratio between primary and secondary?
anonymous yakubu
Black Light
Friday, March 09, 2007 12:56:52 PM
i want to know more about it operation
Black Light
Monday, March 05, 2007 2:00:37 PM
hello...blacklights are coolsweet!awesome...haha me make this...i want to make it but i dont want to build so lazy me so lazy!!! im retarted...
Black Light
Monday, March 05, 2007 4:48:13 AM
do you think I can make a germicidal out of a 5mm UV bulb using 3V batteries? Hope you can advice!
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