Reduced rating T-connected autotransformer for converting...
Reduced rating T-connected autotransformer for converting...
Regulator circuit for independent adjustment of pumps in...
Ringer power generator circuit for carrier subscriber station te
Ringing signal supply
Ringing signal supply
Rotary dynamoelectric machine having high-resistance rotor
Rotary phase converter
Rotary phase converter
Rotary phase converter
Rotary phase converter having circuity for switching windings to
Rotary phase generator and system