Posts by Syed Saad Hasan

A Simple audio amplifier (or power amp) is an electronic amplifier, that amplifies audio signals before sending them to a device like a head…

An audio amplifier circuit serves the purpose of increasing the amplitude of an audio waveform. without changing other properties of the wav…

Laser Tripwire alarm can detect the movement of people or objects while they are passing through the laser beam and trigger security alarms…

A LED Dimmer is a circuit that works with light fixtures to control the brightness of a light. By changing the voltage waveform being applie…

A DC adjustable power supply is an integral part of any power supply unit used in electronic equipment. It serves as an interface between a…

An amplifier is the heart and soul of any audio system & is the component responsible for taking a source signal & presenting it to a loudsp…

Nowadays, almost all electronic devices include a circuit that converts AC supply into DC supply. The section of equipment that converts AC…

A laser diode driver is a configuration used to drive a laser diode. A laser diode is a semiconductor device made of two different materials…

A Flip-Flop LED flashing circuit is a basic circuit that produces a continuous square wave blinking output. This circuit is generally used f…

LED flasher circuits are perhaps, the simplest way for electronics to say 'HELLO WORLD'. It is a simple electronic circuit that provides a v…

When using an Arduino, we often need to control more voltage/current than can be handled directly from the Arduino pins. Most Arduino pins c…

A VU meter or a volume unit meter is a device that displays the intensity of an audio signal in music equipment (loudspeaker, mic, electric…

A Simple timer circuit is a crucial part of any electronic circuitry that introduces a set time delay in various switching devices. This del…