6V to 12V Converter
Electronic Schematics > Power > 6V to 12V Converter

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.


This is the schematic of the Voltage Inverter


Part Total Qty. Description Substitutions
R1, R4 2 2.2K 1/4W Resistor  
R2, R3 2 4.7K 1/4W Resistor  
R5 1 1K 1/4W Resistor  
R6 1 1.5K 1/4W Resistor  
R7 1 33K 1/4W Resistor  
R8 1 10K 1/4W Resistor  
C1,C2 2 0.1uF Ceramic Disc Capacitor  
C3 1 470uF 25V Electrolytic Capcitor  
D1 1 1N914 Diode  
D2 1 1N4004 Diode  
D3 1 12V 400mW Zener Diode  
Q1, Q2, Q4 3 BC547 NPN Transistor  
Q3 1 BD679 NPN Transistor  
L1 1 See Notes  
MISC 1 Heatsink For Q3, Binding Posts (For Input/Output), Wire, Board  


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.

Title: 6V to 12V Converter
electronic circuit
Source: www.aaroncake.net
Published on: 2005-02-03
Reads: 1958
Print version: Print version

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Electronic circuits > Power > 6V to 12V Converter