This is the 300W inverter circuit which capable to convert 24VDC become 220VAC. With this circuit, you will have 220V AC power with 300W max rated, from 24V lead acid battery or accumulator. Schematic diagram: PCB […]
Circuit Schematic Diagram
50 Watt Power Audio Amplifier
Here the circuit diagram of 50W power amplifier. The amplifier uses a pair of power transistors that are MJ2955 and 2N3055 to amplify the input signal. You must use a heatsink on those transistors. The below […]
50W Inverter 12VDC to 220VAC
This is the inverter circuit which capable to convert 12V DC to 220V AC dan handle about 50 Watts small electronic appliances. With this circuit, you can use a 12V accumulator / lead acid battery to […]
Electronic Siren
This is Electronic Siren circuit diagram which use standard discrete components. The sound produced imitates the rise and fall of an American police siren. When first switched on the 10u capacitors is discharged and both transistors […]
Portable Audio Amplifier
This is simple portable audio amplifier circuit. This circuit built based on IC TEA2025 which is a monolithic integrated audio amplifier in a 16-pin plastic dual in line package manufactured by UTC. Circuit has Internal Thermal […]
6V to 12V DC to DC Voltage Converter
This is the circuit diagram of 6V to 12V DC to DC voltage converter (6V to 12V DC voltage doubler). This is the active circuit for voltage doubling from 6 volt to 12 volt DC with […]
100W RMS Audio Amplifier
Here is the 100W RMS audio amplifier schematic diagram: This circuit is quite simple but will give you high quality audio output. Take a note that above diagram designed for single input and single output (mono […]
2 Watt Mini Audio Amplifier
This is the circuit diagram of 2 Watt mini audio amplifier. This circuit is inexpensive, easy and quite simple. This is general audio amplifier which can be used for computer, CD player or other devices which […]
LED Flashing Heart
This is the LED flashing circuit, since the shape used in this circuit was hearth shape, then we call it LED flashing heart circuit. The circuit is quite simple, low cost, easy to built. Alternatively, you […]
13.8 Volt 20 A Transformerless Power Supply
Do you need high current power supply without heavy and expensive transformer? Then, this circuit would be great choice for you. This 13.8 Volt 20 A regulated transformerless power supply. 20A transformer is very-very expensive, large […]