Found in a 1970s American documentation, this circuit uses components from the era that can eventually be replaced by modern equivalents. The power supply must be symmetrical.
This circuit has a gain of 34 dB and a good power to be used as an audio booster in cars. The...
This circuit was obtained from Dutch documentation from 1967. It uses transistors of the time...
Found in an Electronic Design this circuit controls a headlamp by triggering a time determined by the...