This 8 W amplifier with germanium transistors was found in a Japanese documentation from 1967. The circuit is of the commercial type and is powered by two 12 V batteries or by a symmetrical source.
This approach alarm was found in Radio Electronics from July 1990. The circuit must be powered by a...
This is the basic circuit of a servomotor found in a manual of linear integrated circuits from the...
Found in a 1964 Electronic Design, this circuit uses transistors from that time. Equivalent...