Hello,
I wish to build a circuit to control a DC motor. The motor pulls Approx 14 Amps at 12 VDC.
When selecting a flyback diode, am I good just selecting one that has a surge rating of greater than 14 amps? Or is there other things that I need to consider when selecting.
Also, I have a 409 Amp 12VDC motor that I occasionally use. The motor has it's own built in controller. However, In the power line, I installed a solenoid with contacts rated at 500 Amps. The motor is intermittent duty. The on time is less than 60 seconds. This motor runs the winch on my Jeep. The purpose of this solenoid is so that should something get wet and short out in the motor/winch controller the winch will not drive uncommanded. In normal circumstances the solenoid will only turn off after the winch stops driving, and thus only interrupt the current for the indicator light, however it is rated to interrupt 500 amps. However, if I do have to interrupt up to 500 amps while the winch motor is driving, what sort of flyback protection should I use? Should I find a diode with a surge rating of 500 Amps?
Thanks,
-Jonathan