Print Friendly and PDF

Can someone explain the Armature Output Waveform from a Parker 514C Controller?

Here is a trace from my oscilloscope of the armature output of a 514C controller.  The controller is powered by 245V single phase mains.  There are voltage pulses at 60Hz that reach a maximum of 342V and a minimum of 158V and and average of about 280V.  I expected more of a flat DC like waveform from the controller.  Why are there pulses and not a flat voltage output?

Parents Reply Children