Over-voltage protection circuit

Details Over-voltage protection circuit Over-voltage protection circuit

1974-05-28

1976-01-06

Shoop, William M.

317 31, 317 50, 317 33SC, 317 33VR, 317 13R, H02H 320, H02H 706

Patent

active

039315460

ABSTRACT:
An over-voltage protection circuit for an electric generating machine having a controlled rectifier for shunting the output winding of the machine in the event of an over-voltage condition includes impedance means connected in series with the controlled rectifier and regulation circuitry responsive to current flowing through the impedance means for preventing the excitation of the field when the controlled rectifier is conductive. An improved triggering circuit including a Zener diode and a transistor switch is employed to assure proper triggering of the controlled rectifier.

REFERENCES:
patent: 3469168 (1969-09-01), Harland, Jr. et al.
patent: 3488560 (1970-01-01), Konopa
patent: 3581150 (1971-05-01), Kirk et al.
patent: 3651379 (1972-03-01), Moisand et al.
patent: 3702962 (1972-11-01), Wohr et al.

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