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Newly Updated Circuit Projects:

Comparator Datasheet Parameters

Last Updated on May 17, 2026 by Swagatam Leave a Comment

positive feedback hysteresis

This post will help you to understand a few of the crucial comparator parameters or specifications which are generally found in comparator IC datasheets. Some of the major parameters that you may come across in the datasheet of a compartaor are: Propagation delay Current consumption Output stage type (open collector/drain or push-pull) Input offset voltage, […]

Filed Under: Datasheets and Components Tagged With: Comparator, Datasheet, Parameters

Rotating LED Chakra Circuit for God Idols

Last Updated on July 7, 2026 by Swagatam 24 Comments

rotating chakra using LEDs

LED Chakra is an ornamental lighting system which depicts or imitates a rotating wheel like appearance, by means of sequentially shifting Illuminated LED arrays. Indian subcontinent is a land of festivals and celebrations which mostly start from the month of August and continues until the New Year. All these festivals have one fundamental thing in […]

Filed Under: Lamps and Lights Tagged With: Chakra, Idols, LED, Rotating

SCR Applications Circuits

Last Updated on June 23, 2026 by Swagatam 32 Comments

Half wave series static switch.

In this article I have explained many interesting SCR application circuits and also learn the main features and properties of an SCR also called a thyristor device. What’s an SCR or Thyristor SCR is the acronym of Silicon Controlled Rectifier, as the name suggests it’s a kind of diode or a rectifying agent whose conduction […]

Filed Under: Mini Projects Tagged With: Applications, Circuits, SCR

How Varactor (Varicap) Diodes Work

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

Varicap characteristics C pF versus VR

A varactor diode, also called varicap, VVC (voltage-variable capacitance, or tuning diode, is a type of semiconductor diode which features a variable voltage-dependent capacitance on its p-n junction when the device is reversed biased. Reverse bias basically means when the diode is subjected to an opposite voltage, meaning a positive voltage at the cathode, and […]

Filed Under: Electronics Theory Tagged With: Diodes, Varactor, Varicap, Work

Electronic Touch Organ Circuit

Last Updated on May 15, 2026 by Swagatam 9 Comments

circuit diagram

An electronic touch organ is an intriguing musical device which produces very pleasant musical notes in response to finger touches on special touch sensitive electronic pads or buttons. Modern day organs are, however, very costly which usually places these outside the reach of the majority of folks. Low cost options types lack performance, and are […]

Filed Under: Audio and Amplifier Projects Tagged With: Electronic, Organ, Touch

Prevent Amplifier Fuse from Blowing During Power Switch ON

Last Updated on May 15, 2026 by Swagatam 12 Comments

amp fuse protector

Is your power amplifier fuse blowing during power switch ON? It could be happening due to the initial high current drawn by the loudspeakers, when power is switched ON. The simple amplifier fuse protection circuits presented here can be effectively used for solving the issue. The problem is commonly seen in high power amplifiers, where […]

Filed Under: Audio and Amplifier Projects Tagged With: Amplifier, Blowing, During, Fuse, Power, Prevent

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