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Simple H-Bridge Circuits Using BJTs and MOSFETs | No Need of Driver ICs

Last Updated on June 30, 2026 by Swagatam 4 Comments

An H-bridge is one very useful circuit arrangement which lets us reverse the polarity across a load, so now with one DC supply we can make current flow through the load in both directions alternately. Because of that, these H-bridge circuits get used in many places like DC to AC inverter circuits, transformer drivers, bidirectional […]

Filed Under: Inverter Circuits, Motor Controller Tagged With: BJTs, Bridge, Circuits, MOSFETs, Need, Simple

How to Generate Electricity from Sea Waves – 2 Simple Methods

Last Updated on June 30, 2026 by Swagatam 4 Comments

seawaterelectricity

In this post we investigate a couple of quick and efficient methods of generating free electricity from the sea waves which is limitless and an infinite source of energy. Introduction Just like wind and sun, sea is another example of massiveness and a potential raw energy source that may be harnessed for acquiring electrical power. […]

Filed Under: Energy from Magnets and Earth Tagged With: Electricity, Generate, Methods, Simple, Water

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

NOT

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

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