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7 Easy Sawtooth Waveform Generator Circuits using UJT, IC 555, and Transistors

Last Updated on September 22, 2026 by Swagatam 6 Comments

swatooth generator circuit compressed

In this post I have explained how to build 7 types of easy sawtooth generator circuits, using BJTs, UJTs, and IC 555. In a sawtooth waveform the voltage increases slowly in a slanting manner or diagonally, then as soon as it reaches the peak, the waveform voltage suddenly drops to zero. Once it drops to […]

Filed Under: Oscillator Circuits Tagged With: Circuits, Easy, Generator, Sawtooth, UJT, Waveform

10 Easy Op-amp Oscillator Circuit Diagrams Explained

Last Updated on September 22, 2026 by Swagatam 5 Comments

formula for calculating C1 and L1

In an op amp oscillator circuit, an op amp is configured with a resistor-capacitor feedback loop or a inductor-capacitor feedback loop, which triggers the op amp to go into an oscillating mode, generating a switching ON/OFF pulses from its output pin. The high-gain and wide passband of operational amplifier (op amp) ICs makes it possible […]

Filed Under: Oscillator Circuits Tagged With: Diagrams, Easy, Explained, Oscillator

Easy H-Bridge MOSFET Driver Module for Inverters and Motors

Last Updated on June 30, 2026 by Swagatam 69 Comments

universal H bridge mosfet driver compressed

If you are wondering if there’s an easy way to implement an H-bridge driver circuit without using the complex bootstrapping stage, the following idea will precisely solve your query. In this article I have explained how to build an universal full-bridge or H-bridge MOSFET driver circuit, using P-channel and N-channel MOSFETs, which can be used […]

Filed Under: Inverter Circuits, Motor Controller Tagged With: Bridge, Driver, Easy, Inverters, Module, MOSFET

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

Easy Two Transistor Circuit Projects for School Students

Last Updated on June 23, 2026 by Swagatam 18 Comments

NPN astable

A variety of small school projects can be built using just two transistors. This compilation includes a collection of practical and fascinating circuit ideas using just a few number of parts. Any small signal transistor can be used in the proposed two transistor circuit, such as BC547, 2N2222, 2N2907, BC108, BC107, TIP32, TIP31, 188, 8050, […]

Filed Under: Mini Projects Tagged With: Easy, Projects, School, Students, Transistor

5 Easy 1 Watt LED Driver Circuits

Last Updated on June 1, 2026 by Swagatam 154 Comments

12Bwatt2Bled2Bdriver2Bcircuit

In this post I have explained about a few easy to build, compact 1 watt LED bulb circuits. The first circuit is SMPS based, the second design uses a capacitive power supply, while the remaining concepts show how to used a DC source to illuminate a 1 watt LED. Warning: Many of the circuits I […]

Filed Under: Lamps and Lights Tagged With: Circuits, Driver, Easy, LED, Watt

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