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SMPS

12V, 5 Amp SMPS Battery Charger Circuit

Last Updated on May 17, 2026 by Swagatam 500 Comments

12v2B52Bamp2Btransformerless2Bbattery2Bcharger2Bcircuit

In this article we study a simple flyback based converter design which is implemented as an SMPS 12V, 5amp battery charger power supply, without using a iron core transformer. How it Works The proposed 12V, 5 amp smps battery charger circuit employs a flyback converter topology which results in the required smps based high current, […]

Filed Under: Battery Charger Circuits, SMPS and Converters Tagged With: 12V, Battery, Charger, SMPS

220V AC to 56V DC SMPS Circuit for 48V Battery Charging

Last Updated on May 17, 2026 by Swagatam 2 Comments

In this article we will try to understand how to build a 220V AC to 48 V DC SMPS circuit for charging all types of 48V batteries, using the nice little IC IR2153. However, since 48V battery will require a 56V DC, so we will rather discuss a 220V to 56 V DC battery charger […]

Filed Under: Battery Charger Circuits, SMPS and Converters Tagged With: 220V, 48V, 56V, AC, DC, SMPS

Convert SMPS into a Solar Charger

Last Updated on May 17, 2026 by Swagatam 51 Comments

chargingbatteryfromsmpssolarchargercircuit.

In this post I have explained how to convert smps into a solar charger circuit. The method will result in an extremely efficient and fast solar charging of the connected battery. SMPS Solar Chargers SMPSs have become very common nowadays and we find them being used in the form of AC to DC adapters wherever […]

Filed Under: Battery Charger Circuits, Solar Controller Circuits Tagged With: Charger, Convert, SMPS, Solar

SMPS 2 x 50V 350W Circuit for Audio Power Amplifiers

Last Updated on May 15, 2026 by Swagatam 285 Comments

smps2B3002Bwatt2Baudio2Bamp2Bpower2Bsupply2Bcircuit

This article will illustrate a simple procedure to devise an unregulated 50V switching SMPS symmetric power supply of 350W. This unit can be substituted with the standard audio amplifier power supply to reduce expense and also the weight. The proposed power supply works as a half-bridge with no regulation. Written and Submitted by: Dhrubajyoti Biswas […]

Filed Under: Audio and Amplifier Projects, Power Supply Circuits Tagged With: 350W, 50V, Amplifiers, Audio, Power, SMPS

SMPS Spot Welding Circuit using IC SG3525 Explained

Last Updated on April 25, 2026 by Swagatam Leave a Comment

Spot welding needs very low voltage but very high current, that too for very short time, so now this whole thing is built around that idea. In this design we push big current in small time period for safely creating the required welding joint, done. Audio/Video Representation How the Circuit Works Now the circuit, it […]

Filed Under: SMPS and Converters Tagged With: Explained, SG3525, SMPS, Spot, Welding

Build this 85V–265V AC to 12V 5A SMPS Design Using UC3843 (With Calculations)

Last Updated on April 15, 2026 by Swagatam Leave a Comment

This thing is a full SMPS design using UC3843, which takes wide AC input from 85V AC to 265V AC, then gives out 12V DC at 5A, so now it is like a universal input supply, which can be used for 110V AC supplies and also for 220V AC input supplies… Input Protection Stage At […]

Filed Under: SMPS and Converters Tagged With: 12V, 265V, 85V, AC, Build, SMPS

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