US PATENT SUBCLASS 323 / 239
.~.~ Including single unidirectional element with bidirectional pass

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


323 /   HD   ELECTRICITY: POWER SUPPLY OR REGULATION SYSTEMS

234  DF  OUTPUT LEVEL RESPONSIVE {6}
237  DF  .~ Phase controlled switching using electronic tube or a three or more terminal semiconductive device {8}
239.~.~ Including single unidirectional element with bidirectional pass

DEFINITION

Classification: 323/239

Including single unidirectional element with bidirectional pass:

(under subclass 237) Subject matter wherein the final control

device is capable of carrying current in only one direction but the circuit is arranged in such fashion that both polarities of the input are passed or controlled.

(1) Note. The unidirectional element may be a tube or semiconductive device connected within a diode bridge circuit so as to pass both polarities of the alternating current or a tube or a semiconductive device bridged by a single diode whereby one polarity of the applied A.C. is controlled and the other polarity is uncontrolled.

SEE OR SEARCH THIS CLASS, SUBCLASS:

324, for external or operator controlled devices of this type.

SEE OR SEARCH CLASS

327, Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,

448, for A.C. gating SCR's in a bridge.