This circuit with zener diodes was found in documentation from the 90s. The zener diodes determine the lighting point of the LEDs. The circuit is for 12 V automotive batteries.
We found this circuit in the October 1997 Electronics Now magazine. The circuit controls a solar...
The circuit shown makes it possible to power CD-players, tape players and other devices that use 2...
Activating a relay from the pulse (coming from a monostable, for example) can be useful in several...