This circuit was found in a 90s Popular Electronics. It is possible to analyze the voltages of an automotive battery. The integrated voltage comparator circuit admits equivalent.
The integrated circuits used in this circuit are from the 70s and are therefore no longer common in...
This circuit was obtained in an American publication of 1977. The circuit generates rectangular...
This circuit is from a 1976 Motorola CMOS manual. It can be implemented with modern Darlingtons like...