Suggested by General Electric in 1966 documentation, this circuit uses unusual components today. Observe the supply voltage for the Nixie indicator tubes.
Indicated for scanning circuit applications, we found this generator in a Radio Electronics from the 80s....
This circuit tests crystals up to a few megahertz with ease. The circuit is from a 1977...
Found in documentation from the 70s, this circuit uses an operational one from that time. It goes for...