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Inverter Circuits

3 High Power SG3525 Pure Sine wave Inverter Circuits

Last Updated on May 10, 2025 by Swagatam 1,394 Comments

In this post I have explained a 3 powerful yet simple sine wave 12V inverter circuits using a single IC SG 3525. The first circuit is equipped with a low battery detection and cut off feature, and an automatic output voltage regulation feature. This circuit was requested by one of the interested readers of this […]

Filed Under: Inverter Circuits Tagged With: High, Power, Pure, SG3525, Sine, Wave

How to Design a Solar Inverter Circuit

Last Updated on February 16, 2023 by Swagatam 128 Comments

When a DC to AC inverter is operated through a solar panel, it is called a solar inverter. The solar panel power is either directly used for operating the inverter or it’s used for charging the inverter battery. In both the case the inverter works without depending on mains utility grid power. Designing a solar […]

Filed Under: Inverter Circuits, Solar Controller Circuits Tagged With: Design, Inverter, Solar

SPDT Relay Switch Circuit using Triac

Last Updated on September 13, 2019 by Swagatam 18 Comments

SPDTtriac 1

An efficient solid state single pole double throw or SPDT switch can be built using triacs for replacing a mechanical SPDT. In this post I have explained a simple solid state triac SPDT relay circuit, using an optocoupler and a couple of triacs, which can be used as an effective replacement for mechanical relays. The […]

Filed Under: Inverter Circuits Tagged With: Relay, SPDT, Switch, Triac

How to Design an Uninterruptible Power Supply (UPS) Circuit

Last Updated on August 4, 2020 by Swagatam 64 Comments

charger

In this brief tutorial I have explained how to design a customized UPS circuit at home using ordinary components such as a few NAND ICs and a some relays. What is an UPS UPS which stands for uninterruptible power supply are inverters designed to provide a seamless AC mains power to a connected load without […]

Filed Under: Inverter Circuits Tagged With: Design, Power, Supply, Uninterruptible, UPS

Generator/UPS/Battery Relay Changeover Circuit

Last Updated on July 6, 2019 by Swagatam 28 Comments

automatic2Bbattery2Bcharger2Bcircuit

In this article I have explained a generator/UPS/Battery relay changeover circuit for implementing a customized optimization for a generator, UPS, battery power network, in order to enhance the operational efficiency of the system. The idea was requested by Mr. Sidingilizwe. Circuit Objectives and Requirements First of all thank you for adding me to your circles. […]

Filed Under: Inverter Circuits Tagged With: Battery, Changeover, Generator, Relay, UPS

Mini Welding Machine Circuit for Small Welding Jobs

Last Updated on January 1, 2024 by Swagatam 62 Comments

welding

A welding machine is an electrical device which is able to generate a very high current at relatively low DC voltages. This high current output can be suitably used for creating the intended welding arcs and welding joints. The welding joint is created by fusing the welding rod on the joint area through a high […]

Filed Under: Inverter Circuits Tagged With: Jobs, Machine, Mini, Small, Welding

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