Monostable 4047 (CB25123E)

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

Linear Sawtooth Generator 555 (CB25539E)
This circuit generates a linear sawtooth signal. The circuit was found in the December 1992 issue...
Neon Lamp Timer (CB229E)
When the power is on, the 1 µF capacitor charges slowly by R1 and P1 until then on trigger...
Optical Link Receiver (CB4945E)
This is a possible circuit for the receiver of the previous circuit. Other circuits can be found...