400 Watt 70 Volt Amplifier

400 Watt 70 Volt Amplifier
This is the schematic design of 400 Watt 70 Volt amplifier capable to deliver about 400W RMS power output in single channel. The component part list, PCB layout design and component placement layout is provided in this post. The power supply module already included ini the PCB design. The components are easily found in market. This circuit is using 8 transistors of 2SC5200 mounted in PCB, the heatsink is required and should be mounted in the power transistors to

1000W Stereo Audio Amplifier with Transistors 2SC5200 and 2SA1943

1000W Stereo Audio Amplifier with Transistors 2SC5200 and 2SA1943
This is the circuit design of 1000W stereo audio amplifier. It is a very good design to assemble, easy to build from your board to the acquisition of components, the output transistors are the COMPLEMENTAR 2SC5200 and 2SA1943 relatively cheap and with very good result. In the power supply module we have 6 capacitors 4700uF/80v or more and one 50A bridge rectifier diode, this design can be in versions mono (500 Watts) or stereo (1000 Watts), if it is

21W Class AB Audio Amplifier

21W Class AB Audio Amplifier
This is the circuit design of 21W class AB audio amplifier uses power transistors as the main part. It is a simple design, and simple to set up. Set the 10k trimmer to about half way and the 470 ohm trimmer to 0 resistance. Power up and set the quiescent current to 30mA by trimming the 470 ohm trimmer. Once done, measure the offset voltage. Trim the 10k so that between -30 and 30mV is measured. The amplifier should

4 Channel Amplifier with IC LM1877N

4 Channel Amplifier with IC LM1877N
This is a 4 channel amplifier circuit build based two IC LM1877N. A LM1877 can be used for a stereo amplifier. The circuit ideally suited for use with quadraphonic equipment such as a Sound Blaster Live card. There is no volume control in this circuit, audio levels being directly controlled from the sound card itself. (more…)

600W MOSFET Power Amplifier

600W MOSFET Power Amplifier
This is the circuit diagram of 600W MOSFET power amplifier. The circuit will give you more than 600 Watt audio output for speakers with impedance of 4 Ohm. This high power amplifier circuit uses 6 pieces of N-channel MOSFETs IRFP450 in the output stage alone and will give you about 400Watt power. To make more than 600Watt, then you need to use 12 pieces of N-Channel MOSFETs IRFP450. One of the construction sequence to produce more output power of