Power Supply Circuits

This Simple Dual Output Voltage Doubler and Inverter Circuit is very useful for power electronics. It give higher voltage or negative voltage from one power source. Circuit is good for DC to DC change, battery devices and low power circuits. It uses special chip IC MAX660 with few parts and can load current up to […]

This USB to 12V DC Boost Converter Circuit works as step-up converter. It take 5V from USB and make 12V DC. This is useful to power small 12V device from USB, like power bank or computer USB. It uses LT1618 boost IC inside which is good to change low voltage to high voltage and keep […]

This is LM2678 Based 5V DC-DC Buck Converter Circuit It makes 5V DC-DC buck converter. Buck converter changes high voltage to low voltage by switching. LM2678 IC chip is very efficient step-down regulator and it can give 5A output current. Circuit efficiency is more than 90% and it works good with load and voltage changes. […]

This tutorial show Step-Up Voltage Regulator Circuit using IC LM2700 which makes low DC voltage go higher. Good for battery devices and keep output steady even if input changes. LM2700 IC is step-up switching converter with switch inside and handle 3.6A and 80 MΩ. Works fast at 600 kHz or 1.25 MHz. Circuit changes 3V DC to […]

Boost converter changes small DC voltage to big voltage. It is good for battery devices because battery voltage sometimes is less than device needs. This 5V Step-Up Converter Circuit using IC LTC3440 changes input 2.7V to 4.2V into steady 5V output. LTC3440 IC is very efficient up to 96% and give up to 600mA current. […]

Boost Converter 12V to 120V DC Step-Up Circuit is made to raise 12V to 120V DC. It helps to change voltage level when needed. It takes 12V input and makes strong 120V output. Circuit is good for using high voltage from low voltage like battery. Output powers to about 100 watts. Circuit has two parts […]