US PATENT SUBCLASS 388 / 917
.~ Thyristor or SCR

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.~ Thyristor or SCR {3}
918  DF  .~.~> Trigger by unijunction transistor
919  DF  .~.~> Triggered by resistor or capacitor
920  DF  .~.~> Chopper

DEFINITION

Classification: 388/917

Thyristor or SCR:

Art collection of systems which include a bistable circuit element whose function is to reverse the polarity of an electrical signal.