The Kinetics SVR1-EC speed-regulated, eddy current clutch field exciter is a SCR regulated rectifier system specifically designed for the application of supplying regulated variable DC power, via a closed feedback loop system, to the field coil of an eddy current clutch adjustable speed drive. The system speed regulation, or "slip", of an eddy current clutch, is controlled by varying the output voltage of the SVR1-EC rectifier to the clutch field. The SVR1-EC, with the feedback loop closed on a speed signal, will maintain drive speed regardless of load conditions, within the rating and protective trip limits of the rectifier. The SVR1-EC system makes use of an external "speed signal" to provide for regulating clutch field current to maintain drive speed proportional to either a local or remote referencing signal. The speed feedback signal, generated externally - commonly from a tachometer generator, is directly proportional to drive output speed.