Long Duration Timer
https://www.electronics-lab.com/project/long-duration-timer/
This project is a long duration timer based on 555 timer IC. Description This timer project can be used to switch ON/OFF any device after a set time, this circuit can be used in lots of application like switched ON/OFF Radio, TV, Fan, Pump, kitchen timer, the circuit describe here its unique in its own. […]
Pulse generator
https://www.electronics-lab.com/project/pulse-generator/
Description Pulse Generator project will generate a frequency in up to 180 KHz which can form a good test gear project. This project is based on the classic 555 timer IC. Specifications Input : 5-12 VDC Max @ 40 mA Provides Square Waves Range : Jumper selectable and preset tunable range of 1 Hz to […]
230V Blinking LED
https://www.electronics-lab.com/project/230v-blinking-led/
Attention: This Circuit is using 230V that is lethal. Please take appropriate precautions !! Introduction I needed a pulsating light for a certain signaling. Voltage was 230V. So I decided to make a simple circuit, consisted of a LED diode, two capacitors, two resistors, a diac and a diode. Description Activity of the circuit […]
10W Stereo Audio Amplifier
https://www.electronics-lab.com/project/10w-stereo-audio-amplifier/
This project is a 10W Stereo Audio Amplifier based on TDA1521 IC. Description The project built around Philips TDA1521 IC, The project provides high quality audio 2X10W Audio output. The device is specially designed for mains fed applications, (e.g. Stereo TV Sound and Stereo Radio). The circuit designed for asymmetrical power supply systems. Specifications […]
Adjustable High/Low Frequency Sine wave generator
https://www.electronics-lab.com/project/adjustable-highlow-frequency-sine-wave-generator/
Adjustable High/Low Frequency Sine wave generator, low distortion. Description This circuit uses the versatile MAX038 function generator. Although in this circuit some of the advanced characteristics of this IC are disabled, you can generate Sine, Triangle, Square waves (adjusting A0 and A1 pins see datasheet on www.maxim-ic.com if you want other waves, use a switch). […]
6.5W Stereo Audio Amplifier
https://www.electronics-lab.com/project/6-5w-stereo-audio-amplifier/
This project is a 6.5W Stereo Audio Amplifier based on TDA2004 IC. Description The 6.5W Stereo Audio Amplifier project built around TDA2004 IC. The TDA2004 is a class B dual audio power amplifier, specifically designed for car radio applications etc. Specifications Power supply input 15 VDC Output power: 2 X 6.5 W, 4 Ohm […]
Mini Stereo Audio Amplifier
https://www.electronics-lab.com/project/mini-stereo-audio-amplifier/
This project is a Mini Stereo Audio Amplifier based on TDA2822 IC. Description The dual low power amplifier built around TDA2822 8pin DIP. IC, it is mainly designed to use in portable players, radios and other building block project. A 3V supply can be used to drive headphones providing 20mW in 32 Ohms per […]
Digital Stopwatch 0-60sec
https://www.electronics-lab.com/project/digital-stopwatch-0-60sec/
Introduction By using the same circuit of the Digital Stopwatch 0-99sec , we can add an AND gate, and transform the 0 99sec stopwatch to a 0 60sec stopwatch. We must find a way to control the RESET function of the BCD counter, which is responsible for the counting of the seconds. As […]
Digital Stopwatch 0-99sec using digital ICs
https://www.electronics-lab.com/project/digital-stopwatch-0-99sec/
Introduction In the present article, we will describe the function of a digital stopwatch, 0 99 sec. The function of the stopwatch, relies in the use of 4 integrated circuits. It is obvious that other integrated circuits can be used to achieve the same result, however in this case we have used the following […]
2 Channel Relay Board
https://www.electronics-lab.com/project/2-channel-relay-board/
This project is a 2 Channel Relay Board. Description 2 channel Relay driver project can be controlled by feeding 2-12V trigger voltage, Very useful project for application like Micro-Controller based projects, Remote controller, Lamp on Off, and any circuits which required isolated high current and high voltage switching by applying any TTL or CMOS level […]