Nowadays, almost all electronic devices include a circuit that converts AC supply into DC supply. The section of equipment that converts AC to DC is a DC power supply. In general, at the input of a DC … Read more
Syed Saad Hasan
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. One a P-material, the other an N-material, sandwiched together. Forward … Read more
Laser Diode Driver Using LM317 Voltage Regulator IC
A Flip-Flop LED flashing circuit is a basic circuit that produces a continuous square wave blinking output. This circuit is generally used for indicative & alarming purposes. In this project, we are going to design … Read more
Flip-Flop LED Flashing Circuit Using Astable Multivibrator
LED flasher circuits are perhaps, the simplest way for electronics to say ‘HELLO WORLD’. It is a simple electronic circuit that provides a visual cue in the form of a flashing LED. An LED flasher … Read more
Simple LED Flasher Circuits Using 2N3904 NPN Transistor
When using an Arduino, we often need to control more voltage/current than can be handled directly from the Arduino pins. Most Arduino pins can handle 5VDC and 20ma of continuous current. However, other sources suggest … Read more
Arduino High Voltage Driver Circuit Using IRF9540 Power MOSFET
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 guitars, amps, etc.). More specifically, it is used to visualize … Read more
Simple VU Meter using LM3914 Dot/Bar Display Driver IC
A Simple timer circuit is a crucial part of any electronic circuitry that introduces a set time delay in various switching devices. This delay of a few seconds or minutes becomes a crucial requirement for … Read more
Simple Timer Circuit Using 2N3904 NPN Transistors
Nowadays, almost all electronic devices include a circuit that converts AC supply into DC supply. The section of equipment that converts AC to DC is a DC power supply. In general, at the input of a DC … Read more
Simple 5V Power Supply Circuit Using LM7805 Regulator IC
A Beeper circuit is a simple but sophisticated electronic device that produces a monotonous beeping sound which can be used for alarming or indication purposes in places such as hospitals, police stations, or Fire brigade … Read more
Simple Beeper Circuit Using CD4011 2-Input NAND Gate IC
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 several types including discrete components such as an astable multivibrator, … Read more
LED Chaser Circuit Using CD4017 Decade Counter IC
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 applications requiring a much higher DC power input (about 60V to … Read more
Simple Voltage Booster Circuit Using Transistors – DIY
Speech amplifiers are compact, personal amplification systems that give voice boosts for different speech impairments. Some designs are for noisy environments, while some are ideal for simple tasks like talking. In this project, we are … Read more
Speech Amplifier Circuit using TDA7052 Audio Amplifier IC
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 used to build such circuits. But the use of LEDs has … Read more
LED Emergency Light Circuit Using LDR (Light Dependent Resistor)
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 you familiar with a couple of commonly used … Read more
Different Parts of PCB – Printed Circuit Boards
A high power amplifier is a non-linear device that amplifies a small signal to a significant level, all the while maintaining the smaller signal’s parameters. Amplifiers are an essential part of modern-day electronics. Amplifiers typically … Read more
High Power Amplifier Circuit (100 Watts) Using TIP122 TIP127 Transistors
What is a Proximity Sensor? An Electronic Proximity Sensor is a contactless sensor that determines the presence of any object within its vicinity when the target object enters the sensor’s field. Depending on the type … Read more