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Newly Updated Circuit Projects:

Simple 3 Phase Inverter Circuit

Last Updated on June 30, 2025 by Swagatam 253 Comments

3 phase driver signal 1

In this post I have explained how to make a 3 phase inverter circuit which can be used in conjunction with any ordinary single phase square wave inverter circuit. The circuit was requested by one of the interested readers of this blog. UPDATE: Looking for an Arduino based design? You may find this one useful: Arduino 3 […]

Filed Under: Grid and 3-Phase, Inverter Circuits Tagged With: Inverter, Phase, Simple

How to Measure Transformer’s Current Capacity

Last Updated on June 30, 2025 by Swagatam Leave a Comment

We can use a shunt resistor and ammeter concept to find out how much maximum current a transformer can give, in other words, we are trying to know the current rating or amp capacity of a transformer. If you do not wish to read the full article below, you can feel free to watch the […]

Filed Under: Meters and Testers Tagged With: Capacity, Current, Measure, Transformer

Simple H-Bridge Inverter Circuit using IR2184 ICs

Last Updated on June 30, 2025 by Swagatam 18 Comments

In this post we will try to understand this full bridge or H-bridge inverter circuit using IR2184 ICs. Let us begin breaking it down section by section. If you do not want to read the full article, you can simply watch the following video instead: What This Circuit is Doing: So here basically we are […]

Filed Under: Inverter Circuits Tagged With: Bridge, Inverter, IR2184, Simple

How to Make Dog Barking Preventer Circuit using High Frequency Deterrence

Last Updated on June 30, 2025 by Swagatam 391 Comments

dogbarkcircuit

The discussed circuits are designed to discourage dogs from barking in the selected zone by the generation of a synchronized ultrasonic sound waves in response to a few initial barking of a particular dog. The circuits explained below when correctly optimized will produce a high pitched ultra sonic sound each time it senses a dog […]

Filed Under: Pets and Pests Tagged With: Barking, Deterrence, Frequency, High, Preventer

Clap Switch Circuits with Relay ON/OFF: [Tested]

Last Updated on June 27, 2025 by Swagatam 226 Comments

clap switch

The clap switch circuits explained here will toggle a connected load ON and OFF in response to alternate clap sounds? Here I have explained 4 unique and simple designs which can be selected as per user preference. The article talks about what the title suggests – a clap switch. A small electronic circuit when built […]

Filed Under: Sensors and Detectors Tagged With: Circuits, Clap, OFF, ON, Relay, Switch

Single Ended nOOds, 300mm long Flexible LED Filament, Warm White 3V

Last Updated on June 24, 2025 by Swagatam Leave a Comment

transformerless LED automatic lamp

So here we are talking about this cool looking thing called Single Ended nOOds, basically it is a type of flexible LED filament which is 300mm long which means around 30 cm, like one standard scale. It glows in warm white color and works nicely with just 3V DC. What is it, actually? This LED […]

Filed Under: Lamps and Lights Tagged With: 300mm, Flexible, Long, nOOds, Single

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