Posts by Saad Hasan

What is a VU Meter? A VU meter is an electronic measuring instrument that measures the level of sound intensity for audio equipmen…

Timely gas detection is often necessary due to a number of reasons. If a hazardous gas accidentally leaks out into a work environm…

What is a Simple Voltage Level Indicator? A voltage level indicator is a simple electronic circuit that allows you to measure the…

What is a Laser Tripwire Home Security System? Home security setups allow you to protect your private property from any undesirabl…

In order to control an AC/DC motor using a microcontroller or µ-processor, we need something called a motor controller/driver. A m…

The use of Infrared (IR) technology has become a common occurrence in our daily lives. From small signal transmitters in our TV re…

What is an Audio Power Amplifier? An audio power amplifier is an electronic amplifier that has the capability of boosting low powe…

What is a Touchless Hand Sanitizer Dispenser? A Touchless hand sanitizer dispenser is an automatic fluid distribution system that…

What is a Heart Rate Monitor? A heart rate monitor is an electronic device that allows you to monitor your heart rate (ECG) for la…

A Dual polarity power supply unit is capable of providing both +/- supply voltage with respect to the users' needs. Dual polarity…

What is Pulse Width Modulation (PWM)? Pulse width modulation is a signal optimization technique used to control analog devices. It…

What is a Multi Level Proximity Sensor? An IR Multi Level Proximity sensor is an iteration and an improvement in the general IR pr…