3A Switching Power Supply Regulator
This is the circuit diagram of 3A switching power supply regulator: Simple and cheap, the circuit built based on well-known…
16W Bridge Amplifier using LM383
The following diagram is 16W audio amplifier circuit. The circuit built based 2 pieces of power IC LM383 in bridge…
Arduino UNO
Here the Arduino UNO schematic diagram (click to enlarge): About Arduino UNO: The Arduino Uno is really a microcontroller board…
5 Band Graphic Equaliser
This is the design diagram of 5 band graphic equaliser circuit build using operational amplifier chips, the NE5532 or LM833.…
Telephone Amplifier using LM386
The following diagram is the circuit diagram of telephone amplifier, build based small amplifier IC LM386. This is a easy…
Current Output Multiplier for 78xx Regulator
This is the circuit diagram of current output multiplier designed for regulator IC LM78xx. By default, the regulator ID 78xx…
M66T Melody Generator
This is the very simple way to play a song with single 1.5 battery. You can build this circuit for…
Basic Dual Polarity Power Supply
This is a very basic dual polarity power supply circuit diagram, it also called symmetrical power supply or split power…
4 Watts FM Transmitter
The following diagram is the FM transmitter circuit with FM transmision up to 4W. Voltage supply for this circuit is…