Contactless tap changer for distribution transformer - has unity ratio current transformer and having antiparallel thyristor pair connected across primary winding
DE2605500A1
Small duty cycle current limiter - has logic circuit delaying start signal for next cycle according to load current integral valve
DE2446985A1
Stabilisation of AC voltages by in-phase corerection - cut-in of AC voltage to AC input dependent on actual value of output
DE2433531A1
Machine monitoring system with digital break-down display - has store supplying detected intrusions as decimal number series
