5V DC To 48V DC Converter For Phantom Power Supplies
This circuit presents a simple and low-cost DC-to-DC converter for phantom power supplies used in mixing consoles, microphone preamplifiers, telephone systems and similar equipment. There are many application circuits that require...
NeoPixel Colour-Changing LED Lighting Using Arduino
This NeoPixel LED lighting based on WS2811 driver and Arduino digitally produces red, green, and blue (RGB) lights and the combinations. Originally introduced by Adafruit, the LED strips come with driver...
Smartphone Based Liquid Level Monitoring System
Measurement of liquid level in process tanks for monitoring and/or controlling is essential in process industries. In process plants, tanks contain various liquids that are generally costly. Some of the liquids...
6W+6W Stereo Amplifier Using LA4440
Here is a simple project of a 6W+6W stereo amplifier using a 14-pin LA4440 IC. This amplifier can deliver an output power of 6W on a 4-ohm speaker (6W each on...
LED Emergency Light Cum Power Bank Plus Mini Fan Driver
This simple circuit can be used as an LED emergency light, a power bank for charging mobile phones, and as on-the-go (OTG) USB DC fan driver.
The power bank with 12Ah can...
Automatic Water Dispenser
A branded automatic water dispenser is usually expensive. So, a relatively low-cost do-it-yourself solution is presented here. It is a portable general-purpose automatic water dispenser perfectly suitable for homes to wash...
DIY: Low Noise Power Supply With Four ICs In Parallel
This article presents a low-noise power supply with four 78L15 voltage regulators in parallel, giving about 15V DC output. The modern environment has become noisier, and every power supply is a...
Brushless DC Motor Driver
Use of brushless DC motors (BLDCs) is on the rise. But their control usually requires rotor position information for selecting the appropriate commutation angle. Normally, a Hall Effect sensor is used...
Smart 230V AC Bulb Holder
The smart 230V AC bulb holder introduced here is an ultra-simple device with an automatic electric bulb controller switch and a standard electric bulb holder realised with the help of a...
Automatic Lights and Door Without Microcontroller
There are various IoT devices available in the market that perform tasks based on voice commands such as opening a door or switching on/off the lights and many others. Constructing them...
