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Mini Projects

Circuit Projects for Beginners and School Students

Last Updated on January 7, 2026 by Swagatam 47 Comments

simple LED flashlight

In this article I have explained how to build small electronic circuit projects suitable for beginners, young hobbyists, school students, who are new to electronics and are at the initial learning stage. Which Circuit Projects are Suitable for the Beginners? The circuit projects that are small in terms of number of component count, and are […]

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

How to Make IC LM339 Circuits

Last Updated on July 23, 2025 by Swagatam 15 Comments

LM339 square wave oscillator compressed

The IC LM 339 is primarily created to compare two input voltages and generate a corresponding output. Having said that, before we try to learn regarding the various LM339 based circuits, it would be important to go through the standard features of the LM339. It is basically a quad comparator IC, meaning we can find […]

Filed Under: Mini Projects Tagged With: Circuits, LM339

Simple IC 4017 Circuits

Last Updated on July 2, 2025 by Swagatam 30 Comments

4017 IC image compressed

The IC 4017 is a versatile counter divider IC which can be applied for making many different interesting electronic circuits. In this post I have explained about a few useful yet simple 4017 IC circuits and projects, assorted and compiled from this blog. How to Understand IC 4017 Pinouts Before we delve into the many […]

Filed Under: Mini Projects Tagged With: 4017, Circuits, Simple

5 Interesting Flip Flop Circuits – Load ON/OFF with Push-Button

Last Updated on February 22, 2025 by Swagatam 129 Comments

Five simple yet effective electronic toggle flip flop switch circuits can be built around the IC 4017, IC 4093, and IC 4013. We will see how these can be implemented for switching a relay alternately ON OFF by alternately pressing a single push-button or through touch pads, which in turn will switch an electronic load […]

Filed Under: Mini Projects Tagged With: Circuits, Flip, Flop, Interesting, Load, ON

2 Digital Potentiometer Circuits Explained

Last Updated on January 19, 2025 by Swagatam 19 Comments

DS 1869 potentiometer circuit

In this post I have explained a 2 simple, single chip digital potentiometer circuits which can be controlled through a single pushbutton, a dual pushbutton (up/down) or even through external digital (CMOS/TTL) input triggers. 1) About DS1869 Dallastat TM is a rheostat or potentiometer. This unit delivers 64 conceivable consistent tap outputs over the over-all […]

Filed Under: Mini Projects Tagged With: Circuits, Digital, Explained, Potentiometer

16 Easy IC 741 Op Amp Circuits Explained

Last Updated on January 19, 2025 by Swagatam 34 Comments

1 16

The 16 fundamental IC 741 based op amp circuits presented here are not only interesting but also very amusing to build. The included circuit ideas like inverting and non-inverting amplifiers, tone control and regulated power supply will surely intrigue you. Circuit diagrams are also attached with the article. Application Circuits (Learn More) We all are […]

Filed Under: Mini Projects Tagged With: 741, Circuits, Easy, Explained

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