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In this category we fundamentally discuss power electronic principles related to switch mode power supplies.
The subject basically includes theories involving solid state power supplies built with switching semiconductor devices like mosfets and IGBTs.
Here we mostly focus on SMPS converters which are used for converting mains AC to low DC using switch mode technology and ferrite based transformers.
Power electronics was developed to ensure higher efficiency in converter designs in terms of cost, weight and consumption.
Thus we can see why SMPS based systems are compacts and lighter in weight than the conventional iron cored converters, and these are additionally very energy efficient since SMPS circuits waste very little power while operating.
However handling power factor correction becomes a major issue while designing power electronic circuits, and in this segment we also have a detailed article regarding the correct implementing of PFC in SMPS circuits.
In this post we learn 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 an … Read moreBidirectional Switch
Definition: According to definition given in Wikipedia an electrical transformer is a stationary equipment that exchanges electrical power across a couple of closely wound coils. A constantly altering current in one winding of the transformer generates a varying magnetic flux, which, consequently, induces a varying electromotive force over a second coil built over the same … Read moreHow Transformers Work
The post presents a detailed explanation regarding how to calculate and design customized ferrite core transformers. The content is easy to understand, and can be very handy for engineers engaged in the field of power electronics, and manufacturing SMPS inverters. Why Ferrite Core is used in High Frequency Converters You might have often wondered the … Read moreHow to Calculate Ferrite Core Transformers
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 … Read moreHow to Design a Flyback Converter – Comprehensive Tutorial
A couple of simple boost converter circuts are explained in this post, whch can be build and applied by any hobbyists for their own specific requiremenet. What is a Boost Converter A boost converter circuit is a design intended for stepping-up or boosting a small input voltage levels to a desired higher output voltage level, … Read moreHow to Make Simple Boost Converter Circuits
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 … Read moreHow to Repair a Switch-Mode-Power-Supply (SMPS)