Power Supply Circuits

3V to 24V Variable Power Supply Circuit is like a Swiss knife. One supply does many things. Turn knob to change voltage from 3V to 24V. Circuit is good for projects needing different voltage. There is no need of many adapters just use this one. Circuit Working: Parts List: Category Component Quantity Resistors 3k 1/4 […]

This Simple 3V to 9V DC Boost Converter Circuit is like a hero for battery. If battery is only 3V like from old remote then this circuit makes it strong by giving it 9V as many device need 9V to work good. So if we only have small battery with low power but still want […]

Simple Solid State Relay (SSR) circuit is like ON/OFF switch but with more better and modern. Not like normal switch with moving parts but this one uses special electronics parts like transistor or triac for turning ON or OFF. It works quietly with no noise and last a long time. It is very good for […]

This 1.5V to 5V Voltage Converter using IC MAX756 works like small power booster for battery. It takes low 1.5V battery like AA battery and makes it higher like 5V. This help for running small electronic things that need 5V for working good. The MAX756 chip is like small hero it help circuit change voltage […]

12 Volt Dual Power Supply Circuit works like two battery in one. It give two output one is +12V and the other one is -12V and both use same ground. This circuit is very helpful for electronics project like audio amplifier where we need both plus and minus voltage for good sound. It is like […]

This Simple 5V Switch Mode Power Supply Circuit using IC LM2674 work like charger for electronics but better. It take strong electricity which is more than 5 volt and make it just 5 volt. 5 volt is perfect power for small electronics like those tiny computer boards for projects. Inside it got a special chip […]