Monostable 4098 (CIR25124E)

This CMOS circuit is re-triggerable. It was found in the April 1988 issue of Radio Electronics magazine;

Locked Micro Alarm (CB1513E)
This circuit locks when the sensors are opened. The relay can be 6 or 12 V depending on the power...
4046 Rectangular Universal Generator (CB25772E)
This circuit uses an unusual PLL, the 4046 CMOS. We found it in the October 1994 issue of...
Lights On Reminder (CB4784E)
This circuit triggers a warning oscillator if you forget the lights on when you leave the car. The...