Monostable 4047 (CB25123E)

This re-triggerable circuit was found in the April 1988 Radio Electronics magazine. Timings are given by R1 and C1.

Variable Reset Ramp Generator (CB5930E)
This circuit can be controlled by an external signal which allows its use as a shield. The circuit...
Common Telephones Intercom (CB17264E)
This circuit aims to take advantage of two old telephone sets in an efficient domestic intercom...
Zero Crossing Detector LM139 (CB4009E)
This circuit was obtained in the 1990 Motorola Linear Databook. The circuit uses a 139 series...