This amplifier uses a 1975 integrated circuit, which is uncommon today. The circuit has a gain of 30 dB and uses a transformer-less output with 9 V power.
The circuit presented was obtained in the National Semiconductor's Linear Applications Handbook of...
Excitation of power loads with a T-MOS transistor (Motorola) using TTL-LS (Low Power Schottky) logic,...
This TTL circuit was found in the February 1973 issue of Radio Electronics magazine. The power...