This Power amplifier circuit is based around IC audio power amplifier driver (LM4702) manufactured by NATIONAL and darlington power transistors MJ11029 - MJ11028 by ON semiconductors
- Recommended power supply voltage : 30V to 35V
- Max power supply voltage : 45V
Amplifier output power maybe scaled by changing the supply voltage and number of output devices. The circuit includes thermal shutdown circuitry that activates when the die temperature exceeds 150. CIRCUIT mute function, when activated, mutes the input drive signal and forces the amplifier output to a quiescent state.