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Constant Current Control Description

 

The constant current source control is to control the output voltage, to the current through the electromagnet size, maintaining the current to a stable level. Voltage source and constant current source control the electromagnet current curve as follows:

 

 

It can be seen above

 

1. When the power supply of electromagnet is voltage source, the work current of electromagnet will gradually decrease as the work time increased and the temperature of electromagnet rises more quickly. Therefore, as the work time increased, the electromagnet suction decrease.

 

2. When the power supply of electromagnet is current source, the work current is constant and the electromagnet temperature rises more slowly. Therefore the current source is very efficient. Because the current is constant, so the electromagnet will remain constant.

 
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