Posts by Syed Saad Hasan

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

A Beeper circuit is a simple but sophisticated electronic device that produces a monotonous beeping sound which can be used for alarming or…

An LED chaser circuit (ring counter) is a repeating sequencer usually made by combining a clock with a counter. The clock can be any of seve…

A DC Voltage booster circuit boosts a low-level DC signal, namely 1.5V to 3V to a significantly higher DC level. they commonly serve in appl…

Speech amplifiers are compact, personal amplification systems that give voice boosts for different speech impairments. Some designs are for…

An LED Emergency Light powers ON when there is not enough lighting or if the main power supply is cut-off. Earlier, fluorescent lights were…

A PCB board works together to form a complete system to power our devices. As we get further into the PCB design process, first let me get y…

A high power amplifier is a non-linear device that amplifies a small signal to a significant level, all the while maintaining the smaller si…

What is a Proximity Sensor? An Electronic Proximity Sensor is a contactless sensor that determines the presence of any object within its vic…

What is a Cell Phone Detector? A Cell phone detector basically senses the presence of any cellular device within its vicinity & provides a r…

What is a Timer Switch? A timer switch is basically a control device that provides an output signal with respect to the input signal provide…

SMT PCB Reflow soldering is the modern mechanism for assembling most printed circuit boards today. Reflow soldering enables mass production…

Solder paste not only performs the function of a physical interconnection material; but, also serves as the PCBs' structural support, therma…