Pulse sampling (CB8881E)

This circuit was found in a 1966 EEE. Transistors support modern equivalents and the waveforms are given next to the diagram.

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PLL (CB7971E)
This common operational PLL circuit was found in a Popular Electronics 90’s. The power supply need...
lasher fired in the dark 555 (CB25534E)
We found this circuit in the November 1992 Radio Electronics magazine. The circuit uses an LDR as a...
Comparator with feedback (CB9579E)
Found in American documentation from the 1980s, this circuit has a diode feedback. At the exit we...