XTAL oscillator with fine tuning (CB22403E)

We found this circuit in an old English documentation. The integrated circuit is of a specific type of the time.

Sound Voltmeter (CB25975E)
This circuit was found in the September 1996 issue of Electronics Now magazine. The sound provided has...
100 MHz Oscillator (CB23729E)
We found this circuit in a March 1961 Radio Electronics magazine. This circuit reaches 100 MHz...
28 to 5 V Converter (CB26336E)
Using the M1575 this switching converter was found in National Semiconductor documentation from...