US PATENT SUBCLASS 388 / 920
.~.~ Chopper

Current as of: June, 1999
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388 /   HD   ELECTRICITY: MOTOR CONTROL SYSTEMS

907  DF  SPECIFIC CONTROL CIRCUIT ELEMENT OR DEVICE {13}
917  DF  .~ Thyristor or SCR {3}
920.~.~ Chopper

DEFINITION

Classification: 388/920

Chopper:

Subject matter under art collection 917 in which rhyristor or SCR is used to periodically interrupt conduction of a current.