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Laboratory Power Supply Circuit

Last Updated on June 2, 2021 by Swagatam 41 Comments

Although a variety of laboratory power supplies have appeared in recent times, only handful of these will provide you with the efficiency, versatility, and low cost of the design detailed […]

Filed Under: Power Supply Circuits

Over Current Cut-off Power Supply Using Arduino

Last Updated on March 20, 2019 by Swagatam

In this post we are going to construct a battery eliminator / DC variable power supply which will automatically cut-off the supply, if the current flow through the load exceeds […]



Filed Under: Arduino Engineering Projects, Power Supply Circuits

0-40V Adjustable Power Supply Circuit – Construction Tutorial

Last Updated on March 8, 2019 by Swagatam 26 Comments

This multipurpose general purpose supply generates as much as 2.5 amps from zero to 20 volts or up to 1.25 amps from 0-40 volts. Current limiting is variable within the […]

Filed Under: Power Supply Circuits

3 Solid-State Single IC 220V Adjustable Power Supply Circuits

Last Updated on June 18, 2022 by Swagatam 14 Comments

These AC to DC power supplies use a single chip to convert mains 220 V or 120 V input AC into 12 V or 5 V DC without depending on […]

Filed Under: LM317/LM338, Power Supply Circuits, Transformerless Power Supply

1.5V Power Supply Circuit for Wall Clock

Last Updated on May 17, 2019 by Swagatam 97 Comments

The post presents a simple transformerless 1.5V DC power supply circuit which can be used for powering wall clocks directly from mains, and also keep a stand by back-up cell […]

Filed Under: Transformerless Power Supply

LM317 Variable Switch Mode Power Supply (SMPS)

Last Updated on July 8, 2019 by Swagatam 95 Comments

So far in this website we have studied LM317 based linear power supply circuits, here we will learn how an LM317 can be executed as a variable switch mode power […]

Filed Under: Power Supply Circuits, SMPS

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