These are circuits that are used as motor drivers for a servo that has been converted to a winch or as replacement electronics for the stock controller that came with a 3Racing winch or similar. My winch controller will cure winch "creep" or "drift" that is common with servos that have been converted to winch use.

I offer two versions of output devices in my winch controllers. The first bunch use MOSFET transistors to switch the power to the winch motor. This is the same technology use in most electronic speed controls. The other version of winch controller uses relay contacts to switch the power. This method of powering the winch means that you can run higher voltages and currents as well as have lower "on" resistance and therefore get the most pulling power and braking power from your winch. These controllers occupy a little more space than the semi conductor controllers.