50 Watt Power Amplifier

Posted on Feb 6, 2013

The supply voltage should be about +/- 35 Volts at full load, which will let this little guy provide a maximum of 56 Watts (rated minimum output at 25 degrees C). To enable maximum power, it is important to get the lowest possible case to heatsink thermal resistance. This will be achieved by mounting with no insulating mica washer, but be warned that the heatsink will be at the -ve supply voltage and will have to be insulated from the chassis.

50 Watt Power Amplifier
Click here to download the full size of the above Circuit.

Voltage gain is 27dB as shown, but this can be changed by using a different value resistor for the feedback path (R3, currently 22k, between pins 3 and 9). The inductor consists of 10 turns of 0.4mm enamelled copper wire, wound around the body of the 10 O

Leave Comment

characters left:

New Circuits



Popular Circuits

12VDC to 220VAC Inverter with Sine Wave Output
Simple Phono Preamplifier
power Switching Between Two Voltage Supplies
Function Generator
three digit display.
Vintage Remote TV-B-Gone Case Mod
Frost Alarm
Novel FM receiver circuit diagram
Digital triac circuit diagram