The time of this timer depends on C1. The circuit was found in the July 1994 Electronics Now magazine. The supply voltage depends on the relay and can go up to 12 V.
This regulator is based on the SFC2308 integrated circuit, which is quite old, therefore difficult to...
This circuit is indicated to function as a receiver of the previous circuit. The circuit is from...
This power supply was found in the December 1993 issue of Electronics Now magazine. Power...