Latching Water Sensor

A balanced Wheatstone bridge controls a JK flip-flop that uses an op amp as an interface. This in turn drives a relay
Latching Water Sensor - schematic

circuit. Rl through R4 can be made larger for increased sensitivity.

Recommended videos

  • Moisture Detector Circuit |Soil Moisture Sensor|
    Duration: 9:13.
  • Make a Water Level Indicator at Home ( Hindi / Urdu )
    Duration: 4:20.
  • Simple Hall Effect Latching ON/OFF Relay Switch Circuit
    Duration: 3:46.