Power Supply Circuits

Simple 12V Boost Converter Circuit using IC LM2698 make output voltage higher than input. LM2698 IC have switch inside and can handle 18V and 1.35A with 0.2Ω. Input voltage 2.2V to 17V and output is 2.2V to 17V. Keep voltage steady even if input changes. Circuit is good for many input voltages and battery devices. […]

Switching regulator is good for change power. It control voltage by fast ON/OFF of power transistor. LM5007 IC is high voltage buck regulator and it lower voltage from big input voltage range. This step-down regulator have all parts inside for good and cheap circuit. 10V Switching Power Supply Circuit with IC LM5007 gives steady 10V […]

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 […]