US PATENT SUBCLASS 388 / 918
.~.~ Trigger by unijunction transistor

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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}
918.~.~ Trigger by unijunction transistor

DEFINITION

Classification: 388/918

Triggered by unijunction transistor:

Subject matter under art collection 917 in which the operation of the thyristor or SCR is initiated by a signal from a unijunction transistor.