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Explained

5 Useful Power Failure Indicator Circuits Explained

Last Updated on June 1, 2026 by Swagatam 49 Comments

power failure indicator circuit diagram

In this post I have explained 5 useful power supply failure indicator circuits which can be used to get an instant indication regarding an input power failure situation. This post includes the following 5 types power failure indicator circuits: Main Function The main function of the proposed power failure indicator circuits is to alert or […]

Filed Under: Indicator Circuits Tagged With: Circuits, Explained, Failure, Indicator, Power, Useful

5 Simple Audio Mixer Circuits Explained

Last Updated on May 28, 2026 by Swagatam 47 Comments

cartridge

The explained 5 circuits below are universal simple audio mixer circuits, that may be customized and upgraded to 5 channel or even 10 channel mixers, as desired by the user. Contributed by: Anil Rao. Stereo Audio Mixer The operation stereo audio mixer circuit shown below is straightforward: If a mic is “being used,” its output […]

Filed Under: Audio and Amplifier Projects Tagged With: Audio, Circuits, Explained, Mixer, Simple

Freezerless Refrigerator Circuit Diagram Explained

Last Updated on May 28, 2026 by Swagatam 4 Comments

single door refrigerator circuit

Existing frost free double door refrigerators function with the help of defrost timer and defrost heater for automatic defrosting. The objective of my circuit is to convert the existing refrigerator to one, without freezer (freezerless) Written and Submitted By: Subramanian. C.N. My circuit modifies the existing circuit of my refrigerator, by replacing the existing defrost […]

Filed Under: Home Electrical Circuits Tagged With: Explained, Freezerless, Refrigerator

5 Simple Fastest Finger First Circuits Explained

Last Updated on May 21, 2026 by Swagatam 14 Comments

fastest finger first game

The 5 simple fastest finger first indicator circuits presented here can be used for indicating which candidate was the first to press the answer button out of the 4 participating candidates in a quiz contest. We all have probably seen the famous game show “who wants to be a millionaire” and many similar quiz shows, […]

Filed Under: Games and Sports Projects Tagged With: Circuits, Explained, Fastest, Finger, First, Simple

5 Simple Electronic Dice Circuits Explained [Digital Dice]

Last Updated on May 21, 2026 by Swagatam 12 Comments

dice compressed

We all know what a dice is and how manually a dice is shuffled and thrown to get a random number. In older times when we did not have computer games or mobile games, we used to play with various indoor games that required tossing a cubical thing called dice having 1 to 6 dots […]

Filed Under: Games and Sports Projects Tagged With: Circuits, Dice, Digital, Electronic, Explained, Simple

IC 4060 Pinouts Explained

Last Updated on May 20, 2026 by Swagatam 69 Comments

IC4060PinOut

Another versatile device, the IC 4060 has numerous applications and can be used for implementing various useful functions in an electronic circuit. Introduction Basically the IC 4060 is a oscillator/Timer IC and can be used for producing discretely variable accurate time intervals or delays. Alternatively it may also be used as an oscillator for acquiring […]

Filed Under: Electronics Theory Tagged With: 4060, Explained, Pinouts

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