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 simple circuit with good gain using just one transistor was published in Radio Electronics magazine...
March 2017 - This new component of Vishay has a 16-bit resolution that allows it to be used in a...
Found in documentation from the 1970s, this circuit for resistive loads uses a trigger...