This CMOS circuit was obtained in a 1980s documentation. The circuit has a 10-second time delay before firing. The transistor is a general-purpose type and power supply according to the relay.
This one-digit photometer using CMOS circuits was found in a 1989 documentation. The circuit is...
The presented circuit generates signals in a 1:10 frequency range depending on the Ct capacitor. See the...
This circuit, from a 1988 publication, consists of a timer that activates a relay at the end of a...