US PATENT SUBCLASS 257 / 115
.~.~ With electrical trigger signal amplification means (e.g., amplified gate, "pilot thyristor", etc.)

Current as of: June, 1999
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257 /   HD   ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES)

107  DF  REGENERATIVE TYPE SWITCHING DEVICE (E.G., SCR, COMFET, THYRISTOR) {19}
113  DF  .~ With light activation {4}
115.~.~ With electrical trigger signal amplification means (e.g., amplified gate, "pilot thyristor", etc.)

DEFINITION

Classification: 257/115

With electrical trigger signal amplification means (e.g., amplified gate, "pilot thyristor", etc.):

(under subclass 113) Subject matter wherein means are provided to amplify the electrical signal generated by the light sensitive portion, in order to trigger the regenerative switching device.