Differential Temperature Controller.
This circuit measures the temperature difference between 2 sensors and activates a relay when they are different
Water Level Controller Circuit This simple Water level controller circuit is useful to control the water level in a tank. It does this by turning On and Off a water pump depending on the status of the sensors. With a NC (Normally Closed) or a NO (Normally Open) contacts of the relay RL, we can handle any type of starter. […]