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.
Found in American documentation, this circuit aims to produce pulses of certain durations from smaller...
This circuit limits the intensity of an audio signal from a control voltage. The circuit is from a...
This amplifier for recording heads was found in a Radio Electronics from September 1963. The...