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0-60V LM317HV Variable Power Supply Circuit

Last Updated on August 14, 2021 by Swagatam 79 Comments

The high voltage LM317HV series of ICs will allow to go beyond the traditional voltage limits of an LM317 IC and enable controlling supplies that may be as high as […]

Filed Under: LM317/LM338, Power Supply Circuits

How to Design an Uninterruptible Power Supply (UPS) Circuit

Last Updated on August 4, 2020 by Swagatam 49 Comments

In this brief tutorial we learn how to design a customized UPS circuit at home using ordinary components such as a few NAND ICs and a some relays. What is […]



Filed Under: Inverter Circuits

Selecting Power Supply for Car Amplifiers

Last Updated on May 5, 2022 by Swagatam 30 Comments

The following discussion informs us regarding how to select the right power supply for a car amplifier which needs to be operated at home. The questions were raised by Mr. […]

Filed Under: Audio and Amplifier Projects

LM324 Variable Power Supply Circuit

Last Updated on July 6, 2019 by Swagatam 190 Comments

univeral high current high voltage power supply circuit

The presented universal power supply circuit can be used just for anything, you can use it as a solar battery charger, bench power supply, mains battery charger circuit, or for […]

Filed Under: 324 IC Circuits, Power Supply Circuits

12V LED Backpack Power Supply Circuit

Last Updated on February 10, 2021 by Swagatam 9 Comments

In this article we learn to make a simple 12v LED backpack power supply circuit for powering a 36watt LED lamp, which includes appropriately wired integrated sockets for enabling the […]

Filed Under: Battery Chargers, Inverter Circuits, Power Supply Circuits

Adjustable 3V, 5V, 6V, 9V,12V,15V Dual Power Supply Circuit

Last Updated on November 21, 2022 by Swagatam 32 Comments

The purpose of this paper is to detail a variable dual lab power supply circuit which has an adjustable range from 3V, 5V, 6V, 9V, 12V, and 15V or even […]

Filed Under: LM317/LM338, Power Supply Circuits

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