This is the circuit diagram of 50W power
amplifier circuit which built based on single power amplifier chip of
STK084. It's an well-known old IC for audio frequency (AF) amplifier.
This circuit requires dual polarity /
split power supply with maximum supply of ± 50. The recommended supply
is ± 35 / 2-3A DC current. You may use this split power supply circuit
for the amplifier. Use 28V center tap transformer to get about ± 36V
output.
Technical Details:
Power output: 50W
RL : 8 Ohm
TDH : 0.2 %
Rin : 52K
Gain : 26.4 dB
Noise : 0.3 mV
RL : 8 Ohm
TDH : 0.2 %
Rin : 52K
Gain : 26.4 dB
Noise : 0.3 mV
Take a note that heatsink is required to
be mounted on the power IC since it will going to hot when operated and
deliver high power output (high audio volume level). Link
50W Power Amplifier Circuit using STK084,
