An electromagnetic control system activates the various parts of a macgine, at the right momento and for the right amount of time, ensuring that the machine functions propertly.
CAM SWITCH CONTROLLER
The device on the side of the pulley in the picture above is called a cam.
LIMIT SWITCHES
The picture below shows an electrical control system for a wáter tank. The battery provides power for a water tank. The battery provides power for the pump, which moves water from the lowert tank for the pump, which moves water from the lower to the upper tank. When the upper tank is full, a limit switch turns off the pump.
The switch is activated when the float rises to a certain level. When the water level goes down, the sitch returns to its original position and the pumpturns on again.
There are two types of limit switch: N/C (Normaly Closed) N/O (Normaly Opened)
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