Debashis Das

Voice Controlled FM Radio using Arduino and Google Assistant

Nowadays, most of us like to listen to music, with our smartphones. But a few years back, this was not the case, at that point...

Digital Audio Volume Control Circuit using PT2258 IC and Arduino

A potentiometer is a mechanical device using which one can set the resistance according to the desired value, thus changing the...

How to Design a PCB Antenna for 2.4GHz

Antennas are everywhere these days, most of the mainstream technologies like smartphones, security, and IoT devices use...

How to Properly Terminate an unused OP-Amp to Avoid Noise and Power Related Issues

An op-amp plays a very crucial role when it comes to designing circuits with analogue components. But while implementing such...

Programmable Gain Amplifier using MOSFET and Transistor

In the measurement industry, a very crucial functional block is a Programmable Gain Amplifier (PGA). If you are an electronic...

Half Wave and Full Wave Precision Rectifier Circuit using Op-Amp

A rectifier is a circuit that converts alternating current (AC) to Direct current (DC). An alternating current always changes...

Positive and Negative Charge Pump Circuit

In a previous article, I have shown you how you can build your own switched capacitor voltage converter circuit using the...

AC Current Measurement using Current Transformer and Arduino

A current transformer is a type of instrumental transformer specially designed to transform alternating current in its...

Over Voltage, Over Current, Transient Voltage & Reverse Polarity Protection Circuit using RT1720 Hot Swap Controller with Fault Timer

Oftentimes in an electronic circuit, it's absolutely necessary to use a special protection unit to protect the circuit from...

High Power High Efficiency Buck Converter Circuit using TL494

A buck converter (step-down converter) is a DC-to-DC switching converter that steps down voltage while maintaining a constant...