Voltage Doubler from 6VDC to 12VDC

6v to 12v voltage doubler

This is the circuit diagram of voltage doubler, or it can be called DC to DC converter circuit, from 6 Volt DC become 12V DC. This dc voltage doubler circuit will need about 2A from the 6V input supply to produce the full 800mA at 12V for the power output.

Component Parts:
R1, R4 = 2.2K
R2, R3 = 4.7K
R5 = 1K
R6 = 1.5K
R7 = 33K
R8 = 10K
C1,C2 = 0.1uF C3 = 470uF/25V
D1 = 1N914
D2 = 1N4004
D3 = 12V 400mW Zener Diode
Q1, Q2, Q4 = BC547
Q3 = BD679
L1  is a custom inductor wound with about 80 turns of 0.5mm magnet wire around a toroidal core with a 40mm outside diameter.


  • 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.
  • You can use a larger value for capacitor C3 to provide better filtering.

Power supply is an electronic device that supplies electric energy to an electrical load. The primary function of a power supply is to convert one form of electrical energy to another and, as a result, power supplies are sometimes referred to as electric power converters. Some power supplies are discrete, stand-alone devices, whereas others are built into larger devices along with their loads. Examples of the latter include power supplies found in desktop computers and consumer electronics devices.

Tags: 6 to 12 voltage doubler dc to dc converter dc volyage doubler

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