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Newly Updated Circuit Projects:

DC Lamp Dimmer Circuit using IC 555

Last Updated on September 22, 2026 by Swagatam 22 Comments

DC lamp dimmer

In this post I have explained how to use the control pin#5 of the IC 555 to build a simple PWM controlled DC light dimmer circuit. The proposed DC lamp dimmer can be used for controlling the light intensity of any DC lamp having an operating voltage anywhere between 6 V and 12 V. The […]

Filed Under: Oscillator Circuits Tagged With: 555, DC, Dimmer, Lamp

Temperature Controlled Relay Switch Circuit

Last Updated on January 2, 2024 by Swagatam 227 Comments

temperature controlled relay circuit

In this article I have explained a simple temperature controlled relay circuit which can be switched ON/OFF depending on the temperature on its temperature sensor. Meaning, when the temperature on its temperature sensor rises above a set threshold point, the relay switches ON, and when the temperature drops below the threshold, the relay switches OFF. […]

Filed Under: Temperature Controllers Tagged With: Controlled, Relay, Switch, Temperature

Electronic Cricket Sound Generator Circuit

Last Updated on September 22, 2026 by Swagatam 8 Comments

cricket sound simulator

In this post I have explained how to build a simple cricket chirping sound generator circuit using a single IC 4093 and a few other passive components. An electronic cricket sound generator is a device which generates a sound exactly similar to a real cricket insect. This is done using a set of oscillators configured […]

Filed Under: Oscillator Circuits Tagged With: Cricket, Electronic, Generator, Sound

2 Simple RF Detector Circuits Explored

Last Updated on April 2, 2026 by Swagatam 10 Comments

RF detector circuit using transistors

In this article I have explained a couple of very easy to build RF detector circuits, which can be used to sense or detect or sorts of Rf electrical noise that may be floating in the surrounding atmosphere. What is RF RF stands for radio frequency, which is a kind of electrical interference transmitted in […]

Filed Under: Sensors and Detectors Tagged With: Circuits, Detector, Explored, RF, Simple

Circuit Projects for Beginners and School Students

Last Updated on August 28, 2026 by Swagatam 49 Comments

simple LED flashlight

In this article I have explained a compilation of small electronic circuit projects suitable for beginners, young hobbyists, school students, who are new to electronics and are at the initial learning stage. So let us learn in details how simple DIY circuit projects specially suited for newcomers can be built and implemented practically. Simple Adjustable […]

Filed Under: Mini Projects Tagged With: Beginners, Projects, School, Students

Transistor Monostable Circuits with Applications

Last Updated on June 23, 2026 by Swagatam 25 Comments

transistor monostable with LED

In this post I have explained how to build a few simple monostable circuits using only transistors, and also learn how to make practical application circuits with them. If you search for transistor monostable circuit online, you will find that one typical circuit has been discussed in all the online articles. This circuit looks a […]

Filed Under: Mini Projects Tagged With: Applications, Circuits, Monostable, Transistor

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