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.
Found in a 90’s Radio Electronics, this circuit uses a component from the time, difficult to find today....
We found this circuit in a 1996 publication. The circuit uses components that are still common. The...
This 1 kHz filter was found in the March 1997 issue of Electronics Now magazine. The circuit is...