This circuit with an unusual configuration was found in the January 1974 issue of Radio Electronics magazine. The frequency is given by L1/C1, and the transistors admit equivalents.
This circuit is from a Fairchild digital clock module shown in the March 1977 issue of Radio...
Found in an Electronic Design from the 90s, this circuit modifies the phase of a signal in 8...
Any TTL inverter can be used in this circuit. We found it in documentation from the 80s, but it...