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What kind of output is best for controlling the power to a DC motor?
Reference Number: AA-00468 Views: 2391 Created: 10/29/2010 03:58 pm Last Updated: 09/02/2016 05:29 pm 0 Rating/ Voters


Open-collector outputs with circuit protection are the best choice for controlling power to devices with highly inductive loads such as DC motors, solenoids, and high-current relays.

Switching off inductive loads can induce a voltage spike capable of causing damage to relays, digital outputs, or the DC motor itself.

Both SeaI/O-530 and SeaI/O-540 modules have isolated open-collector outputs with integrated flyback diodes. The flyback diode provides a high level of circuit protection against the voltage spike damage caused by switching highly inductive loads.


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