Archives: Projects
![Dual Output Adjustable Linear Power Supply +/-1.2V to +/-12V @ 250mA Dual Output Adjustable Linear Power Supply +/-1.2V to +/-12V @ 250mA](https://www.electronics-lab.com/wp-content/uploads/2021/09/002-1-1024x807.jpg)
Dual Output Adjustable Linear Power Supply +/-1.2V to +/-12V @ 250mA
This project is a solution to power up most devices or projects requiring dual (+/-) adjustable power. The circuit consists of a stepdown transformer, bridge rectifier, DC filter capacitors, LM317 positive and LM337 negative adjustable voltage regulators, 2 x trimmer pot for...
Continue Reading![Dual +12V/-12V @ 400mA Regulated Linear Power Supply with AC input Dual +12V/-12V @ 400mA Regulated Linear Power Supply with AC input](https://www.electronics-lab.com/wp-content/uploads/2021/09/002-1024x989.jpg)
Dual +12V/-12V @ 400mA Regulated Linear Power Supply with AC input
The project presented here is a dual output linear power supply. This power supply provides low ripple low noise DC regulated output. It is a very useful tool to power Audio, Video, OPAMP-based circuits, and projects. The circuit provides regulated +/-12V DC output @ 400mA + 400mA....
Continue Reading![Dual +5 V/-5V @ 200 mA Regulated Linear Power Supply Dual +5 V/-5V @ 200 mA Regulated Linear Power Supply](https://www.electronics-lab.com/wp-content/uploads/2021/08/006-5-1024x848.jpg)
Dual +5 V/-5V @ 200 mA Regulated Linear Power Supply
The project presented here is a dual AC to DC output linear power supply. This power supply provides low ripple low noise DC regulated output. Usually, transformer-based linear power supplies are considered very bulky and inefficient, but this power supply still is very important for...
Continue Reading![IR Remote Controlled Motorized Potentiometer – Arduino Compatible IR Remote Controlled Motorized Potentiometer – Arduino Compatible](https://www.electronics-lab.com/wp-content/uploads/2021/08/004-9-1024x576.jpg)
IR Remote Controlled Motorized Potentiometer – Arduino Compatible
This is an Infrared Remote controlled motorized potentiometer controller. It's an open-source project built on the Arduino platform and compatible with Arduino IDE for custom programming. The project consists ATMEGA328 microcontroller, IR sensor, L293D motor driver, ALPS Motorized...
Continue Reading![Low Voltage Microphone Preamplifier with Variable Compression and Noise Canceling Low Voltage Microphone Preamplifier with Variable Compression and Noise Canceling](https://www.electronics-lab.com/wp-content/uploads/2021/08/013-1-1024x522.jpg)
Low Voltage Microphone Preamplifier with Variable Compression and Noise Canceling
This is a complete microphone signal conditioning project. Designed primarily for voice-band applications, this project provides amplification, limiting, variable compression, and noise gate. User-adjustable compression ratio, noise gate threshold, and two different fixed gains...
Continue Reading![5 W + 5 W Dual BTL Class-D Audio Amplifier 5 W + 5 W Dual BTL Class-D Audio Amplifier](https://www.electronics-lab.com/wp-content/uploads/2021/08/005-5-1024x670.jpg)
5 W + 5 W Dual BTL Class-D Audio Amplifier
The project described here is a high-efficiency dual BTL class-D audio amplifier with single supply operations. The project was built using TDA7491LP13TR from ST. The low profile PCB design can fit in a small area, operating power supply 9-12V DC, Project supports single-ended or...
Continue Reading![230V AC Input – 12V Output DC Converter, Non-Isolated Buck Converter 230V AC Input – 12V Output DC Converter, Non-Isolated Buck Converter](https://www.electronics-lab.com/wp-content/uploads/2021/08/001-3-1024x574.jpg)
230V AC Input – 12V Output DC Converter, Non-Isolated Buck Converter
The project described here outputs 12V DC voltage from the input of 230V AC. The output current is up to 100mA. The project is based on BM2P129TF chip which is PWM method DC/DC converter with a built-in 650V MOSFET. BM2P129TF contributes to low power consumption by built-in a 650V...
Continue Reading![Universal OPAMP Board for SMD SOT23-5 Package Universal OPAMP Board for SMD SOT23-5 Package](https://www.electronics-lab.com/wp-content/uploads/2021/08/25-1024x618.jpg)
Universal OPAMP Board for SMD SOT23-5 Package
This is easy to build and very useful project for hobbyists and students to learn and create OPAMP-based projects. The project accommodates a single OPAMP in the SOT23-5 package. The project provides the user with multiple choices and extensive flexibility for different applications...
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