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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

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

Last Updated on June 23, 2026 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

16 Easy IC 741 Op Amp Circuits Explained

Last Updated on June 23, 2026 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

IC LM338 Application Circuits

Last Updated on June 23, 2026 by Swagatam 90 Comments

LM338basicadjustablepowersupplycircuitdiagram

In this post we will try to analyze a few interesting IC LM338 based power supply circuits and related application circuits which can used by all hobbyists and professional for their day to day electronic circuits and experiments Introduction The IC LM338 by TEXAS INSTRUMENTS, is a versatile IC which can be wired in numerous […]

Filed Under: Mini Projects Tagged With: Application, Circuits, LM338

How to Make IC LM339 Circuits

Last Updated on June 23, 2026 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 FET Circuits and Projects

Last Updated on June 23, 2026 by Swagatam 16 Comments

calibration1

The Field-Effect Transistor or the FET is a 3 terminal semiconductor device which is used for switching high power DC loads through negligible power inputs. The FET comes with some unique features such as a high input impedance (in the megohms) and with almost zero loading on a signal source or the attached preceding stage. […]

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

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