Voltage Follower using Opamp

Voltage Follower is simply a circuit in which output follows the input, means output voltage remains same as input voltage. It...

Summing Amplifier or Op Amp Adder Circuit

Operational Amplifiers (Opamp) has so many interesting applications, and we have already created many circuits using op-amps....

Simple Two Way Intercom Circuit

Most of the schools and offices have intercoms to communicate with people inside a building or a particular campus. These are...

Wireless Switch Circuit using LDR and CD4017

Have you ever feel a shock by touching the switch? It does not generally happen but sometimes physical contact with switches...

Headphone/Audio Amplifier Circuit on PCB using LM386

In this project, we are going to make a Headphone/Audio Amplifier by using self-designed PCB. This project is mainly designed...

Light Detector Circuit using Wheatstone Bridge

“Eyes sense what mind sees.” Like this LDR (light dependent resistor) sense if there is any light source in its sensing range....

Temperature Controlled DC Fan using Thermistor

“Automation is good, so long as you know exactly where to put the machine’’, In this tutorial we are making a Temperature...

Simple Audio Tone Control Circuit

In simple language, Tone Control Circuit is the circuit, using which we can control the output of audio device. To control the...

Simple Air Flow Detector Circuit

Detection of air flow is useful in many projects and applications. Here we are building a very simple circuit to detect the air...

Simple FM Transmitter Circuit

Building an FM Transmitter and broadcasting our own signals on the air is really a fun project to do.  Especially, with this...