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 obtained from Linear Technology documentation from the 80's. Powered by 5 V it...
We found this circuit in a 1967 Electronic design. However, it can be easily implemented even...
This circuit serves to prevent devices powered by 6 V from being left with a power cut. The...