Reply To: Hornby Ruston 48DS and feedback

Members Forum RTR Conversions Locos Hornby Ruston 48DS and feedback Reply To: Hornby Ruston 48DS and feedback

#249218
Nick Ridgway
Participant

    The resistance of a GOW bulb across the terminals is there to better match the motor and controller from the perspective of system dynamics and control system stability. Without it, a low-inertia motor will behave badly with feedback controllers.

    Some decades ago I did some experiments with ECM Compspeed type A, a favourite of mine, with Portescap 1219, another favourite, connected to an oscilloscope. It revealed what was going on.

    My write-up is available as a Manual sheet. If more explanation is needed I can up-rev it; please advise?