Mini UPS Project
Here the simple Mini UPS circuit diagram. This circuit can provide an uninterrupted power supply (UPS) to operate 12V, 9V…
Automatic Light Controller
This is the circuit diagram of automatic light controller which use 78xx voltage regulator IC series. The voltage regulator ICs…
4 Stage FM Transmitter
This is the FM transmitter circuit which apply 4 radio frequency stages, that are a VHF oscillator designed around transistor…
Electro-Harmonix Soul Preacher
This is the circuit diagram of Electro-Harmonix Soul Preacher pedal. (more…)
LPG Gas Leakage Sensor Alarm
This is the schematic diagram of LPG gas leakage sensor alarm. The circuit operates off a 9V PP3 battery. Zener…
Toy Car Remote Control
The circuit, consisting of an infrared transmitter-receiver pair, utilizes IR beam transmission to switch the toy car "on" or "off',…
Laser Communication (Transmitter – Receiver)
This is the circuit diagram of laser communication system that transmit the sound or music signals by way of a…
Seismic / Vibration Sensor
This is the circuit diagram of seismic / vibration sensor. The circuit simulates a seismic sensor to detect vibrations/sounds. It's…
Electronic Motor Starter
The above diagram is the schematic diagram of an electronic motor starter circuit. This motor starter protects singlephase motors against…