6V to 12V Converter


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This inverter circuit can provide up to 800mA of 12V power from a 6V supply. For example, you could run 12V car accessories in a 6V (British?) car. The circuit is simple, about 75% efficient and quite useful. By changing just a few components, you can also modify it for different voltages.

Schematic

This is the schematic of the Voltage Inverter

Parts

Part
Total Qty.
Description
Substitutions
R1, R422.2K 1/4W Resistor
R2, R324.7K 1/4W Resistor
R511K 1/4W Resistor
R611.5K 1/4W Resistor
R7133K 1/4W Resistor
R8110K 1/4W Resistor
C1,C220.1uF Ceramic Disc Capacitor
C31470uF 25V Electrolytic Capcitor
D111N914 Diode
D211N4004 Diode
D3112V 400mW Zener Diode
Q1, Q2, Q43BC547 NPN Transistor
Q31BD679 NPN Transistor
L11See Notes
MISC1Heatsink For Q3, Binding Posts (For Input/Output), Wire, Board

Notes

  1. L1 is a custom inductor wound with about 80 turns of 0.5mm magnet wire around a toroidal core with a 40mm outside diameter.
  2. Different values of D3 can be used to get different output voltages from about 0.6V to around 30V. Note that at higher voltages the circuit might not perform as well and may not produce as much current. You may also need to use a larger C3 for higher voltages and/or higher currents.
  3. You can use a larger value for C3 to provide better filtering.
  4. The circuit will require about 2A from the 6V supply to provide the full 800mA at 12V.

Related Circuits

6V to 12V Converter, Portable CD Player Adapter For Car, Car Battery Charger, Automatic 12V Lead Acid Battery Charger, Solid State Tesla Coil/High Voltage Generator, 12VDC To 120VAC Inverter, LASER Power Supply, Power Supply, High Current Power Supply, Dual Polarity Power Supply, High Voltage High Current Power Supply, Transformerless Power Supply, Fixed Voltage Power Supply, Voltage Inverter, Voltage Inverter II, Automatic Load Sensing Power Switch

Comments

anonymous
12v to 6v converter
Friday, April 18, 2008 1:14:59 PM
Have converted 6v negative car to 12v. Now looking for a 12v to 6v converter to run radio, gauges and horn.

(Editor's notes: LM7806)

muhammad rameez
12V AC to 14V DC Converter
Saturday, April 05, 2008 9:00:02 AM
sir i just want to convert 12V AC to 14V DC..because my amplifier supports only 14V DC..... i shall be highly greatfull if u could help me in this matter.... thank u...
firoz
24V to 12V Converter
Sunday, March 16, 2008 3:35:09 PM
SIR. I AM LOOKING A CONVERTER 24V TO 12V.PLESE HELP ME HOW CAN I MAKE THIS CONVERTER. ME I USE THIS CONVERTER BY MY CNG BUS.
anonymous
6V to 12V Converter
Saturday, March 15, 2008 9:19:11 AM
hello..can i use the other inductor..what name inductor can i use.. i hope you can tell me as soon posible..i want to hurry........
Ha Quang Thanhmous
4V to 15V converter
Thursday, March 13, 2008 4:24:26 AM
Dear Sir, I Come from Viet Nam and now my circuit is flash the LED. Supply power with accu 4V and I want to converte to 15VDC !!! Can you suggest me ???
casimir
6V to 12V Converter
Monday, February 25, 2008 10:57:53 PM
hi there,i like to ask about the BD679 NPN TRANSISTOR, is there any replacement? of its value? thanks.
Gautham Kumar Akula
12V DC to various (3,5,9,12,24) V AC
Tuesday, February 05, 2008 10:39:39 PM
Hello, I am looking for a circuit / wire diagram for getting output of 3,5,9,12,24 V AC using the 12V DC
sevakram
4V to 12V Converter
Monday, February 04, 2008 6:47:01 AM
Sir, I m having 4v output from my one circuit and a geared motor running on 12v. Can u suggest me a ckt converting 4v to 12v?
hemet
10V to 12V Converter
Wednesday, January 30, 2008 12:37:24 AM
Hi! everyone, I´m looking for help on converting from 9-10 volts to 12volts as soon as possible, please. Any input is highly appreciated!! Thanks in advance for your time..
shalu
2.4V to 3.3 converter
Wednesday, January 16, 2008 11:41:19 PM
I am looking for a low cost Dc to Dc converter to convert the 2.4 battery voltgae int 3.3 V.
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