This circuit was found in a 1968 General Electric documentation. It has an input impedance of 2 M ohms and excites a load of 16 ohms. The integrated circuit of the time is the PA237.
Found in a Popular Electronics from the 90s, this circuit reaches 100 kHz and battery power is...
This high current regulator with low voltage drop was found in the datasheet of the used...
This circuit has a gain of 34 dB and a good power to be used as an audio booster in cars. The...