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Archives for 2012

How to Check a MOSFET Using a Digital Multimeter

Last Updated on June 8, 2026 by Swagatam 90 Comments

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In this post I have explained how to test mosfets using multimeter through a set of steps, which will show help you to accurately learn the good or faulty condition of a mosfet Mosfets are Efficient but Complex Devices MOSFETs are outstanding devices when it comes to amplifying or switching of various kinds of loads. […]

Filed Under: Meters and Testers Tagged With: Check, Digital, MOSFET, Multimeter

How to Use Transistors

Last Updated on June 7, 2026 by Swagatam 50 Comments

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If you have understood correctly, how to use transistors in circuits, you might have already conquered half of  electronics and its principles. In this post we make an effort in this direction. Introduction Transistors are 3 terminal semiconductor devices which is able to conduct relatively high power across their two terminals, in response to a […]

Filed Under: Electronics Theory Tagged With: Transistors

3 Basic Capacitor Functioning and Working Explored

Last Updated on June 7, 2026 by Swagatam 21 Comments

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In this article I have explained 3 popular functions of capacitors and how to use capacitors in electronic circuit by analyzing their appropriate working modes depending on the application need of a given circuit stage Introduction Seen those colorful, cylindrical and chocolate shaped parts on a PCB? These may be actually the capacitors of different […]

Filed Under: Electronics Theory Tagged With: Basic, Capacitor, Explored, Functioning, Working

How to Make Any Light a Strobe Light Using Just Two Transistors

Last Updated on June 1, 2026 by Swagatam 168 Comments

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If you feel strobe lights very interesting but are disappointed by the fact that these wonderful light effects can be produced only through complex xenon tube then probably you are quite mistaken. It is very much possible to make any light a strobe light if you are equipped with a proper driving circuit capable of […]

Filed Under: Lamps and Lights Tagged With: Just, Light, Strobe, Transistors

3 Glittering LED Christmas Tree Light Circuits Explored

Last Updated on June 1, 2026 by Swagatam 34 Comments

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In this post we present 3 circuit ideas for creating beautiful Christmas tree light decorations. The first idea explains a transistorized flashing blinking LED string light which can be mounted on a Christmas tree. The second circuit diagram describes an LED light effect generator which can be also installed over a real Christmas tree for […]

Filed Under: Lamps and Lights Tagged With: Christmas, Circuits, Glittering, LED, Light, Tree

5 Easy 1 Watt LED Driver Circuits

Last Updated on June 1, 2026 by Swagatam 154 Comments

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In this post I have explained about a few easy to build, compact 1 watt LED bulb circuits. The first circuit is SMPS based, the second design uses a capacitive power supply, while the remaining concepts show how to used a DC source to illuminate a 1 watt LED. Warning: Many of the circuits I […]

Filed Under: Lamps and Lights Tagged With: Circuits, Driver, Easy, LED, Watt

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