25 Watt MosFet Audio Amplifier


Posted on Feb 21, 2013

Can be directly connected to CD players, tuners and tape recorders. Simply add a 10K Log potentiometer (dual gang for stereo) and a switch to cope with the various sources you need. A correct grounding is very important to eliminate hum and ground loops. Connect in the same point the ground sides of R1, R4, R9, C3 to C8. Connect C11 at output ground. Then connect separately the input and output grounds at power supply ground.


25 Watt MosFet Audio Amplifier
Click here to download the full size of the above Circuit.

Adjust R11 to set quiescent current at 100mA (best measured with an Avo-meter in series with Q8 Drain) with no input signal. Adjust R11 to set quiescent current at 100mA (best measured with an Avo-meter in series with Q8 Drain) with no input signal.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

A SPECIAL INTERFACE Joystic ( 68HC11A1)
Fiberoptic interface
Single op amp oscillator
Gene Cafe Dimmer Control Mod
A 555 TIMER LED FLASHER CIRCUIT
8V DC Power Supply With Over Voltage Protection
Brightness controller for low power lamps
Medium-Power FM Transmitter
Comments on the Circuits of the first Transistor Radios
One of the battery discharge protection circuit



Top