Abstract: The following application note demonstrates a power-saving circuit that pulses a sensor for 1 second every 30 minutes. Designed to monitor levels of salt crystals in a water softener, the circuit consumes an average of 70µA. Maxim > Design Support > Technical Documents > Application Notes > Amplifier and Comparator Circuits > APP 1212 Maxim > Design Support > Technical Documents > Application Notes > Measurement Circuits > APP 1212 Keywords: low power sensor, comparator, salt crystal level detector, pulsed sensor, microprocessor supervisor, comparator and reference, uP supervisor Jan 01, 1998 APPLICATION NOTE 1212 Pulsed Sensor Extends Battery Life Jan 01, 1998 Abstract: The following application note demonstrates a power-saving circuit that pulses a sensor for 1 second every 30 minutes. Designed to monitor levels of salt crystals in a water softener, the circuit consumes an average ……