Found in Unitrode documentation, this oscillator uses some unusual components today such as PU and the 3 M potentiometer. The power can be made with voltages around 15 V.
This circuit was obtained from a 1966 General Electric manual. The circuit applies only to...
This Vienna bridge multi-band oscillator circuit was found in a 1974 Ferranti transistor manual. The...
This circuit is intended for communications receivers. We can find it in a documentation from the...