Medium impedance stage (CB20563E)

We found this circuit in an English publication from 1963. The circuit uses germanium transistors of the time.

10 MHz Tuned Resonator Oscillator (CB6142E)
This circuit was found in a 1980s documentation for amateur radio. The circuit makes use of...
Redisparable Monostable with the 4047 (CB11444E)
A positive transition in the trigger makes the outputs change state and remain so for the time...
Benchtop Power Supply 0 to 15 V x 1 A (CB17211E)
This traditional transistor source uses only two transistors found in a 1998 documentation. The...