This old indicator circuit indicates only when the fuel reaches the sensor level. The integrated circuit is not common today. The circuit was found in documentation from the 1980s.
When two pulses reach the inputs of the circuit simultaneously, the PUTs fire triggering the lamp...
Using a DAC038 IC this circuit is from Radio Electronics from May 1983. The circuit must be...
This well-crafted source with current and voltage regulation was found in American documentation from the...