Projects Projects
Microphone Preamplifier – Sound Sensor
This is an easy to construct dual-stage microphone pre-amplifier.
Stereo Balanced to Unbalanced Audio Converter
The primary role of this project is to convert a differential input audio signal into a single-ended output signal while rejecting noise that is common to both inputs (common-mode noise).
Voltage-Controlled Pulse Width Modulator (PWM) – PWM Signal Generator
This is an easy-to-use voltage to PWM converter.
Humidity Sensor – Humidity to Frequency Output
This sensor board provides frequency output as per relative humidity value.
Active Rectifier Controller with Reverse Protection for Battery and Solar cell
This demonstration circuit is an active rectifier with reverse protection for batteries in automotive applications.
Low Profile 2 Channel Solid State Relay for AC Loads
This project offers an extremely compact solution for interfacing 2 high voltage resistive or inductive loads.
TINY DC-DC Power Module – Input 8-28V DC – Output 5V DC 1A
This tiny power module is an easy-to-use integrated power solution that combines a 3A DC/DC converter chip with inbuilt power MOSFETs, an inductor, and passives into a 3-pin, through-hole package.
Automatic LED Stairway Lighting – Arduino Compatible
This creative idea is suitable for a stairway with 16 stairs, each stair can have a 12V LED.
Programmable Frequency – Continuous Conduction Mode (CCM) – Boost Power – Factor Correction (PFC) Controller
The circuit described here is a simple PFC controller using the UCC28180 chip from Texas instruments.
SafeBee – A GPS Tracker for Beehives
This is an original design of a GPS tracker designed on Elab and it is intended to be used as a security device for beehives, but it is not limited to this.
3 Phase Isolated Hall-effect Current Sense Amplifier with +/-600V Working Voltage and +/-46A Measurement Range
The project described here is a 3-Phase isolated Hall-effect current sense amplifier with +/-600-V working voltage range.
Multiphase Oscillator with 40% Spread Spectrum Frequency Modulation and 250Khz Output Frequency
This is a precision, low power, and easy-to-use oscillator that provides multiphase outputs.