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.
This circuit was published in an English magazine from 1980. The magazine no longer exists, but...
This is the power source suggested in the old European publication for the CB19635E watch. The...
The EVAL-CN0397-ARDZ evaluation board from Analog Devices is compatible with Arduino shields to...