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Newly Updated Circuit Projects:

Simple IC 4017 Circuits

Last Updated on July 2, 2025 by Swagatam 30 Comments

4017 IC image compressed

The IC 4017 is a versatile counter divider IC which can be applied for making many different interesting electronic circuits. In this post I have explained about a few useful yet simple 4017 IC circuits and projects, assorted and compiled from this blog. How to Understand IC 4017 Pinouts Before we delve into the many […]

Filed Under: Mini Projects Tagged With: 4017, Circuits, Simple

Smart Bathroom Exhaust Fan Controller Circuit with Sensors

Last Updated on July 1, 2025 by Swagatam 23 Comments

So here we are now making one automatic smart exhaust fan controller system using Arduino UNO which will work for three bathrooms that are all connected to a single ventilation pipe and one common exhaust fan. This whole project is going to be based on PIR sensors for human detection, VOC sensors for odor detection […]

Filed Under: Arduino Projects, Sensors and Detectors Tagged With: Bathroom, Controller, Exhaust, Sensors, Smart

Simple 3 Phase Inverter Circuit

Last Updated on June 30, 2025 by Swagatam 257 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 20 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 392 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

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