Dimmer / AC Motor Speed Controller Circuit

Dimmer / AC motor speed controller. Very simple circuit that can control the speed of an AC motor or a room light level of a room using a TRIAC

Differential Temperature Controller.

This circuit measures the temperature difference between 2 sensors and activates a relay when they are different. It is also possible to detect a temperature change, even when the two measured temperatures are normally 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.