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Newly Updated Circuit Projects:

High Voltage, High Current Buck Converter Circuit using Isolated Gate Driver

Last Updated on July 15, 2026 by Swagatam Leave a Comment

This is a high voltage 310V to 60V buck converter, so we have that big 310V DC coming in which we usually get after rectifying 220V AC mains. So now that high DC is there and we want to push it down to something like 60V or lower for battery charging or similar work. Audio/Video […]

Filed Under: SMPS and Converters Tagged With: Buck, Converter, Current, High, Isolated, Voltage

DHT11 Humidity, Temperature Sensor: How to Use and Interface with Arduino

Last Updated on July 14, 2026 by Swagatam Leave a Comment

We are now going to talk about one small cheap sensor that we call DHT11, and we can use that for measuring humidity and also temperature. You can see that many Arduino people like this sensor because it is very simple and also very low cost, so anybody can buy and try. The DHT11 can […]

Filed Under: Arduino Projects, Sensors and Detectors Tagged With: Arduino, DHT11, Humidity, Interface, Sensor, Temperature

LED String Series Resistor Calculator

Last Updated on July 14, 2026 by Swagatam Leave a Comment

how to connect LEDs in series and parallel

Want to know the exact current limiter resistor value for a specific LED series string? You can now use this calculator toll to quickly get the precise LED series string resistor value. Calculator by homemade-circuits.com LED Series Resistor Calculator Supply Voltage (Volts) LED Forward Voltage (Volts) LED Current (mA) Number Of LEDs In Series Calculate […]

Filed Under: Lamps and Lights Tagged With: Calculator, LED, Resistor, Series, String

LC Resonance Calculator for EV Battery Charger Circuits

Last Updated on July 11, 2026 by Swagatam Leave a Comment

This calculator helps estimate resonant frequency or compensation capacitor for a wireless EV charging primary coil. It is for first-step design and learning, not final tuning… Calculator by homemade-circuits.com EV Wireless LC Resonance Calculator EV Wireless LC Resonance Calculator Calculate: Resonant Frequency (Hz)Capacitance (µF)Inductance (µH) First Value: Primary Inductance µHCapacitance µFFrequency Hz Second Value: Primary […]

Filed Under: Automobile Electronics, Battery Charger Circuits Tagged With: Battery, Calculator, Charger, EV, Tool, Wireless

How to Connect Triacs in Parallel for High Current Loads: Circuit Diagram

Last Updated on July 11, 2026 by Swagatam Leave a Comment

Sometimes we make electronic circuit designs, and then we see that one single TRIAC cannot take all the big current of a very heavy load. This heavy load can be a huge heater, a big motor, or too many lights. In this condition, we get a simple idea. We think that we can connect two […]

Filed Under: Electronics Theory Tagged With: Connect, Current, High, Loads, Parallel, Triacs

Blood Electrification Circuit: Explanation And Working Principle

Last Updated on July 10, 2026 by Swagatam 9 Comments

Here we are talking about one circuit which many people know by the name Blood Electrification Unit, and this circuit became known because of Bob Beck many years back in the 1990s time, so now people also call it Beck Blood Electrifier. This unit is nothing complicated looking but the idea sounds heavy because it […]

Filed Under: Health related Projects Tagged With: Blood, Electrification, Explanation, Principle, Working

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