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Newly Updated Circuit Projects:

How to Make a Simple 200 VA, Homemade Power Inverter Circuit – Square Wave Concept

Last Updated on June 5, 2022 by Swagatam 93 Comments

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An efficiency of around 85 % and a power output of more than 200 watts is what you will get from the present design of a power inverter (home built). Complete circuit schematic and building procedure explained herein. Introduction You might have come across many articles regarding power inverters, however you might be still confused […]

Filed Under: Inverter Circuits Tagged With: 200, Homemade, Inverter, Power, Simple, VA

How to Build a 400 Watt High Power Inverter Circuit

Last Updated on October 20, 2020 by Swagatam 95 Comments

Interested to make your own power inverter with built in charger? A simple 400 watt inverter circuit with charger that can be very easily built and optimized has been provided in this article. Read the complete discussion through neat illustrations. Introduction A massive 400 watts power inverter with built in charger circuit has been thoroughly […]

Filed Under: Inverter Circuits Tagged With: 400, Build, High, Inverter, Power, Watt

4 Simple Uninterruptible Power Supply (UPS) Circuits Explored

Last Updated on July 13, 2024 by Swagatam 194 Comments

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In this post I have investigated 4 simple 220V Mains Uninterruptible power supply (UPS)  designs using 12V battery, which can be understood and constructed by any new enthusiast. These circuits can be used for operating an appropriately selected appliance or load, let’s explore the circuits. Design#1: Simple UPS using a Single IC A simple idea […]

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

How to Make a Simple 12 Volt LED Lantern Circuit

Last Updated on June 1, 2026 by Swagatam 37 Comments

LEDlanterncircuit

In this post I have explained how to build a simple 12V LED lantern circuit which may be used at night while travelling and outings such as in picnics, trekking, or camping etc. Introduction So far we have discussed white LEDs comprehensively through many of my earlier articles and have learned how efficient these lights […]

Filed Under: Lamps and Lights Tagged With: Lantern, LED, Simple, Volt

How to Understand and Use IC 4093 NAND Gates, PinOuts

Last Updated on June 23, 2026 by Swagatam 21 Comments

IC 4093 1

In this article I have explained how to use NAND Gates from the IV 4093 or any other similar IC consisting of NAND gates. About IC 4093 The IC 4093 may not have complicated specifications and attributes yet it proposes many useful utilities. It consists of some fundamental blocks which can be configured according to […]

Filed Under: Mini Projects Tagged With: 4093, Gates, NAND, Pinouts, Understand

High Voltage Transistors BUX 86 and BUX 87 – Specifications

Last Updated on May 18, 2026 by Swagatam 1 Comment

BUX 1

In this article we are going to make an effort to understand the technical specs of the BJTs BUX86 and BUX87 which are high voltage complementary paired transistors. Introduction The Bux 86 and BUX 87 are typically high voltage switching transistors with silicon epibase. They come in TO-126 package and are NPN types. These devices […]

Filed Under: Datasheets and Components Tagged With: BUX, High, Specifications, Transistors, Voltage

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