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Simple 220V RGB LED Bulb Circuit for Christmas, Diwali Decoration

Last Updated on June 28, 2026 by Swagatam 2 Comments

In this post I will explain this 220V RGB slow fading LED bulb circuit step by step and we can start from the left side and slowly move toward the right side so that you can understand what each block is doing. We use many parts like 555, 4017, 33uF, D1 to D4, and others […]

Filed Under: Lamps and Lights Tagged With: 220V, Bulb, Christmas, LED, RGB, Simple

Build Simple Transistor Circuits

Last Updated on June 23, 2026 by Swagatam 73 Comments

variable power supply transistor

A compilation of important assorted transistor simple circuits to build has been included here. Simple Transistor Circuits for New Hobbyists Many simple transistor configurations like, rain alarm, delay timer, set reset latch, crystal tester, light sensitive switch and many more have been discussed in this article. In this compilation of simple transistor circuits (schematics) you […]

Filed Under: Mini Projects Tagged With: Build, Circuits, Simple, Transistor

Simple Hobby Circuit Projects

Last Updated on June 23, 2026 by Swagatam 201 Comments

40 Watt Fluorescent Lamp Inverter Circuit Diagram2C Image

A few of the interesting and useful hobby electronic circuit diagrams already published in this blog have been selected and compiled here for your quick reference and understanding. What is a Hobby Circuit? A hobby circuit is an electronic circuit project specially designed to suit new hobbyists. These circuits are mostly small and easy to […]

Filed Under: Mini Projects Tagged With: Hobby, Projects, Simple

Simple Circuits using IC 7400 NAND Gates

Last Updated on June 23, 2026 by Swagatam 26 Comments

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In this article I will elucidate many assorted circuit ideas built using NAND gates from ICs such as IC 7400, IC 7413, IC 4011, and IC 4093 etc. IC 7400, IC 7413 Specifications The I.C.s 7400 and the 7413 are 14 -pin DIL ICs, or “14 pin Dual In Line Integrated Circuits”, where pin 14 […]

Filed Under: Mini Projects Tagged With: 7400, Circuits, Gates, NAND, Simple

10 Simple IC 555 Monostable Circuits Explored

Last Updated on June 23, 2026 by Swagatam 28 Comments

ic 555 internal view compressed

In this post I have explained how IC 555 can be used for making 10 different types of monostable multivibrator circuits, such as one-shot type, debounce preventor, retriggerable type, touch switch monostable circuit and many more. A monotsable multivibrator circuit is a configuration in which, a short momentary pulse at the input of the circuit […]

Filed Under: Mini Projects Tagged With: 555, Circuits, Explored, Monostable, Simple

Simple IC 4017 Circuits

Last Updated on June 23, 2026 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

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