The control system is satisfied once it sees that it has gotten a supply within the specified tolerance . However, the supply may actually be able to do even better than that. They then relax the tolerance to something like 5 to 10 counts once the supplies have reached their setpoints. However, implicit monitoring any time a power supply is turned on or sent to a new setpoint. This implicit monitoring continues until the supply stabilizes at its new setpoint.
Implicit monitoring can be disastrous for supplies that have timed ramps.
Therefore, Dibbuk perceives that the measurement from the supply is fluctuating. It tries to adjust the setpoint to compensate which leads to real fluctuations in the current. There is a simple solution to this problem. There is a new generation of controls hardware and software for Acme power supplies. Switchyard supplies also use these VME -based controls.