This is simple the 12V to 24V step up converter circuit, can convert DCV from 12V to 24V at 1A max. Using TDA2004. Why is amplifier IC? It easy&inexpensive.
This is DC boost converter circuit that can use 3.3V to 5V power supply source into DC 12V-13.8V output max current 100mA. It is switching circuit better than the old circuit.
it is the well-regulated power supply. We use it as the simple step down 12v to 9v converter circuit. It can give the output current up to 4A.
This circuit offers a variety of Buck DC to DC converters. Because as circuit increase voltage as the usb 5v to 12v dc-dc step-up converter. This circuit is called Boost converter circuit.
We use this circuit, when use low voltage to apply the higher voltage relay, It may can help you!
Simple Fixed DC Regulator using many zener diode. Good idea if use zeners!
Simple Step up DC converter circuit using Transistor 6V to 12V!