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Power Supply Circuits

Bidirectional Switch

Last Updated on January 2, 2024 by Swagatam 71 Comments

bidirectional switch symbbol

In this post I have explained about MOSFET bidirectional power switches, which can be used for operating a load across two points bidirectionally. This is simply done by connecting two N-channel, or P-channel MOSFETs back to back in series with the specified voltage line. What is a Bidirectional Switch A bidirectional power switch (BPS) is […]

Filed Under: Power Supply Circuits Tagged With: Bidirectional, Switch

How to Calculate Ferrite Core Transformers

Last Updated on December 12, 2024 by Swagatam 270 Comments

center tapped transformer

Calculating ferrite transformer is a process in which engineers evaluate the various winding specifications, and core dimension of the transformer, using ferrite as the core material. This helps them to create a perfectly optimized transformer for a given application. The post presents a detailed explanation regarding how to calculate and design customized ferrite core transformers. […]

Filed Under: Power Supply Circuits Tagged With: Calculate, Core, Ferrite, Transformers

How to Design a Flyback Converter – Comprehensive Tutorial

Last Updated on January 8, 2024 by Swagatam 54 Comments

1

A flyback configuration is the preferred topology in SMPS application designs mainly because it guarantees complete isolation of the output DC from the input mains AC. Other features include low manufacturing cost, simpler design and uncomplicated implementation. The low current DCM version of flyback converters which include output specification lower than 50 watt are more […]

Filed Under: Power Supply Circuits Tagged With: Comprehensive, Converter, Design, Flyback, Tutorial

How to Build a Boost Converter Circuit: Explained with Calculations

Last Updated on April 10, 2025 by Swagatam 184 Comments

boost

I have explained comprehensively how to build a boost converter circuit for converting a low level DC voltage inputs to a higher level DC voltage outputs. I have furnished all the required calculations s that you can design a customized boost converter circuit. A Practical Boost Converter Circuit Design using IC 555 This simple circuit […]

Filed Under: Power Supply Circuits Tagged With: Boost, Build, Calculations, Converter, Explained

How to Make Step Down Transformers

Last Updated on January 3, 2025 by Swagatam 158 Comments

core lamination

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 going to discuss how to design and construct a basic step down transformer which are typically applied in mains-operated power supplies. Introduction This will likely […]

Filed Under: Power Supply Circuits Tagged With: Down, Step, Transformers

How to Repair a Switch-Mode-Power-Supply (SMPS)

Last Updated on January 8, 2024 by Swagatam 113 Comments

050926 1

In this post we try to diagnose a burnt SMPS circuit and try to troubleshoot and repair the circuit. The shown unit is a cheap readymade Chinese make SMPS circuit. This article is written as per the request made by Mr. Kesava. My SMPS got Burnt The below attachment is 12v 1.3 amps  SMPS for […]

Filed Under: Power Supply Circuits Tagged With: Mode, Power, Repair, SMPS, Supply, Switch

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