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Newly Updated Circuit Projects:

Adjustable RMS Modified Inverter Circuit using BJTs

Last Updated on September 26, 2025 by Swagatam Leave a Comment

modifiedsinewaveform

A very interesting circuit of a RMS controlled modified sine wave inverter is discussed in this article which incorporates just ordinary transistors for the proposed implementations. The use of transistors typically makes the circuit easier to understand and more friendly with the new electronic enthusiasts. The inclusion of a PWM control in the circuit makes […]

Filed Under: Inverter Circuits Tagged With: Adjustable, BJTs, Inverter, Modified, RMS

Modified Sine Wave Inverter Circuits using IC 555 and 4017

Last Updated on September 23, 2025 by Swagatam 633 Comments

modified sinewave inverter circuit

When an inverter with square wave AC output is modified to generate a crude sinewave AC output, it is called a modified sine wave inverter. The following article presents interesting modified sine wave inverter designs with exhaustive descriptions regarding its construction procedure, circuit diagram, waveform output and detailed parts lists. The designs are intended for […]

Filed Under: Inverter Circuits Tagged With: Circuits, Explored, Inverter, Modified, Sine, Wave

7 Easy Voltage Doubler Circuits Discussed

Last Updated on September 20, 2025 by Swagatam 57 Comments

555 voltage doubler

In this article I have explained 7 easy to build DC to DC voltage doubler circuits using a single IC 4049 and IC 555 along with a few other passive components. If you are wondering how a simple IC 555 can be used for making a powerful voltage doubler circuit, then this article will help […]

Filed Under: SMPS and Converters Tagged With: Circuits, Discussed, Doubler, Easy, Voltage

6 Best Ultrasonic Circuit Projects for Hobbyists and Engineers

Last Updated on September 20, 2025 by Swagatam 139 Comments

555 ultrasonic

In this post I have explained a 6 very useful yet simple ultrasonic transmitter and receiver circuit projects which can used for many crucial applications, such as ultrasonic remote control, burglar alarms, electronic door locks, and for listening to frequencies in the ultrasonic range which are normally inaudible to human ears. Introduction Many commercial ultrasonic […]

Filed Under: Wireless Circuits Tagged With: Best, Engineers, Hobbyists, Projects, Ultrasonic

Visitor Counter Circuit Using IC 555 and IC 4026

Last Updated on September 20, 2025 by Swagatam 10 Comments

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A visitor counter is a machine that counts the of number people who visited a place. Visitor counters are usually installed at the entrance and exit points of commercial buildings such as shopping malls, theme parks, museums, Airports, schools, departmental shops and other business etc. The registered counts on the machine are used for business […]

Filed Under: Indicator Circuits Tagged With: 4026, 555, Counter, Visitor

IC 555 LED Circuits (Blinking, Flashing, Fading Effect)

Last Updated on September 20, 2025 by Swagatam 171 Comments

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In this post I have explained how to assemble IC 555 for generating interesting LED circuits with blinking, flashing and fading light effects with some minor modification and enhancements. Why use an IC 555 Astable The astable multivibrator mode is the most fundamental mode of operation of the IC 555. In this mode it basically […]

Filed Under: Lamps and Lights Tagged With: 555, Blinking, Circuits, Fading, Flashing, LED

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