This circuit is from a 1967 documentation. It makes use of varicap and diode tunnel in addition to currently uncommon FET. It serves as a reference.
This circuit was found in a 1987 publication. A 4017 sequentially counts time in steps set by...
Found in 1967 General Electric documentation this circuit appears elsewhere in this section. SCRs are...
Found in an Electronic Design of 1964 this circuit has a control for the frequency and another for the...