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You are here: Home / Archives for Power Supply Circuits

How to Make Step Down Transformers

Last Updated on August 30, 2019 by Swagatam 80 Comments

Core lamination details

A step down transformer is a device which reduces a higher AC potential to a lower AC potential as per its winding ratio and specifications. In this article we are […]

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

2 Compact 12V 2 Amp SMPS Circuit for LED Driver

Last Updated on January 4, 2020 by Swagatam 37 Comments

In this post we comprehensively discuss a 2  simple 12V 2 amp SMPS circuit using the IC UC2842. We study a 2 amp flyback design by evaluating various formulas, which […]

Filed Under: Power Supply Circuits, SMPS

0-40V Adjustable Power Supply Circuit – Construction Tutorial

Last Updated on March 8, 2019 by Swagatam 23 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 October 1, 2019 by Swagatam 8 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

Low Dropout (LDO) Voltage Regulator IC KA378R12C – Pinout and Working Specs

Last Updated on June 29, 2019 by Swagatam 10 Comments

The article explains the pinout functions, and datasheet of a versatile low dropout (LDO) voltage regulator IC KA378R12, and also presents a circuit diagram showing how to use the IC […]

Filed Under: Power Supply Circuits



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