This circuit was obtained in a 1980s publication, but it can be easily assembled today, as all components are common. The transformer is 12 + 12 V with at least 1 A and the diodes 1N4002.
The purpose of this circuit is to sense the water level in the windshield wiper reservoir. The circuit...
We found this circuit in Popular Electronics from January/February 1969. The circuit must be...
This circuit shows how to interface a CMOS circuit with a microcontroller or other circuit using an...