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New Circuit Projects

Smart Buck-Boost MPPT Solar Charger Circuit for 12V 24V Battery

Last Updated on July 9, 2025 by Swagatam Leave a Comment

In this post we are going to learn how we can make one real working smart solar battery charger circuit which can do MPPT charging. We are using Arduino Nano as the brain for controlling everything. We will also use INA219 sensor module so that we can read the solar voltage and current properly. And […]

Filed Under: Battery Charger Circuits, Solar Controller Circuits

SMPS Flyback Boost Converter Calculator

Last Updated on July 5, 2025 by Swagatam 2 Comments

This calculator tool supports a Boost Converter Flyback setup which means now the code considers: Corrected turns ratio and primary voltage logic since the flyback works by storing energy during “ON” time and transferring to secondary during “OFF” time. Flyback boost topology where output voltage is higher than input. An accurate duty cycle formula for […]

Filed Under: SMPS and Converters Tagged With: Boost, Calculator, Converter, Flyback, SMPS

Smart Bathroom Exhaust Fan Controller Circuit with Sensors

Last Updated on July 1, 2025 by Swagatam 13 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 H-Bridge Inverter Circuit using IR2184 ICs

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

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 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

Shunt Resistor Calculator for Ammeters

Last Updated on June 26, 2025 by Swagatam 4 Comments

Ok so here we have one simple calculator which can help us to calculate the shunt resistor value that we need to connect across a normal ammeter when we want to use that ammeter to measure high current, more than its actual range. So normally, ammeter can measure only small current, like 1 amp or […]

Filed Under: Indicator Circuits, Meters and Testers Tagged With: Ammeters, Calculator, Resistor, Shunt

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