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Newly Updated Circuit Projects:

7 Simple Continuity Tester Circuits Explained

Last Updated on June 8, 2026 by Swagatam 43 Comments

simplecontinuitytestercircuit

If you are looking for a simple circuit to test continuity of wires and long conductors, the explained 7 easy to build continuity circuits are the ones which you can try and might fulfill your requirement. What is a Continuity Tester A continuity tester is a device which is used for identifying the correct continuity […]

Filed Under: Meters and Testers Tagged With: Circuits, Continuity, Explained, Simple, Tester

Make this Amplifier Power Meter Circuit

Last Updated on June 8, 2026 by Swagatam 6 Comments

amplifier power meter circuit 1

Music Amplifiers have always intrigued us due to their massive amplifying capabilities which completely changes the dimensions of the delivered music outputs. Fundamentally it’s the power of the amplifier that’s always on the scanner and we find folks getting too obsessed by the power rating of their procured amplifier unit. Introduction However many of us […]

Filed Under: Meters and Testers Tagged With: Amplifier, Meter, Power

Single Transistor Radio Receiver Circuit

Last Updated on May 15, 2026 by Swagatam 55 Comments

one transistor radio circuit

This is probably the simplest radio receiver circuit that one could ever imagine of making. The circuit is so simple that it could be finished assembling within a few minutes and you are already listening your favorite programs over it. Introduction What are the fundamental criteria associated with radio reception? An antenna stage, a band […]

Filed Under: Audio and Amplifier Projects Tagged With: Radio, Receiver, Single, Transistor

3 Useful Electronic Mosquito Repellent Circuits Explored

Last Updated on September 25, 2026 by Swagatam 29 Comments

mos rep

In this post I have explained the construction of 3 simple electronic high frequency mosquito repellent circuits, which are specially designed to drive away mosquitoes through their tuned high frequency pulses. Design#1: Using a Single CMOS IC Mosquitoes are definitely a nuisance for your summer nights, especially when humidity prevails. Electronic mosquito repellent techniques can […]

Filed Under: Pets and Pests Tagged With: Circuits, Electronic, Explored, Mosquito, Repellent, Useful

Simple Delay Timer Circuits Explained

Last Updated on January 2, 2024 by Swagatam 712 Comments

In this post I have explained the making of simple delay timers using very ordinary components like transistors, capacitors and diodes. All these circuits will produce delay ON or delay OFF time intervals at the output for a predetermined period, from a few seconds to many minutes. All the designs are fully adjustable. Importance of […]

Filed Under: Timer and Delay Relay Tagged With: Circuits, Delay, Explained, Simple, Timer

Difference Between Alternating Current(AC) and Direct Current(DC)

Last Updated on May 20, 2026 by Swagatam Leave a Comment

sineDCwaveformdigaram

In this post we try to investigate the mains differences between alternating current (AC) and direct current (DC). The word AC and DC are pretty common with electronics and we all come across it while developing or dealing electronic circuit designs. Overview Though the terms are very ordinary with the field, many noobs become confused […]

Filed Under: Electronics Theory Tagged With: AC, Alternating, Between, Current, Difference, Direct

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