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 […]
LED VU Meter with LM3916
https://www.electronics-lab.com/project/led-vu-meter-with-lm3916/
This project is a LED VU meter based on LM3916. Description LM3916 is a dedicated IC for VU LED meter. Unlike LM3915 which have 3dB step between voltage levels, the LM3916 have nonlinear steps: -20, -10, -7, -5, -3, -1, 0, +1, +2, +3db, just like old school analog VU meters. I saw in YouTube […]
RGB LED Disco Lights
https://www.electronics-lab.com/project/rgb-led-disco-lights/
This project is a microcontroller based RGB LED lights effects. Description RGB LED disco light is a simple project designed around PIC16F72 microcontroller. This firmware is a RGB driver, as name suggests it is used to derive or light red, green and blue LEDs in particular fashion. Its main feature is the pattern shown on […]