Posts by Fizzah Beig

A doorbell with DC Backup Power is a doorbell circuit that is even operational when the main power of a home, office or any building is cut…

Bird sound generator, as its name, suggests, outputs the chirping sound of birds. This electronic bird chirping circuit, an inspiration from…

A Buzzer Circuit here is a sound producer with simple circuitry involving NE555 timer IC along with a variable resistor-capacitor network an…

A beeper Circuit is a small circuit that produces a Beep-Beep sound. The simple circuit involves a NE555 timer IC that drives a buzzer and L…

Today in this post we will discuss the top 3 simple timer circuits. A timer switch or timer circuit is a timer to control any electronic swi…

A light sensor circuit activates when light is detected by the circuit. It is a simple circuit including a photoresistor followed by a trans…

Clap switch circuits work by detecting the sound of a clap, whistle, or any other sound of the same pitch. This electronic mini-project has…

An IR receiver circuit is a simple circuit including an IR receiver and a transistor. In this circuit, the receiver used is a 38kHz transmit…

The audio level meter is a circuit that detects and measure the level of audio/sound in the surrounding. These sound circuit converts sound…

LED Flasher Circuit, here, uses LM3909 as the main operator. It is a very simple, cost-effective circuit that uses just an IC LM3909, an LED…

The two-level temperature switch measures two different temperature ranges. After that, the relay turns ON/OFF corresponding to the temperat…

Telephone line tester circuit is more like a meter. Also, it is a very simple circuit involving just few resistors, a switch and an ammeter…

The four-level temperature indicator is a circuit that represents different temperature levels through the lighting of four different LEDs…