Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1975-12-03
1977-08-09
Heyman, John S.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307241, 328152, H03K 1716
Patent
active
040413292
ABSTRACT:
A manually operable selector switch assembly comprises a plurality of manually operable switch means, a plurality of electrical switching circuits, and a corresponding plurality of bistable devices, one individual to each switching circuit and adapted in its set and reset states respectively to latch the switching circuit in an actuated condition and to place it in an inoperative condition. Each manually operable switch means is adapted upon operation thereof to provide two output signals a first one of which is fed to a single selected bistable device and the second of which is fed to all the bistable devices. The bistable devices are so constructed that only that one which receives both output signals is caused to be set, those which receive only the second output signal being restored to or remaining in their reset conditions. At least the second output signal is derived from a pulse generating circuit in such a manner as to prevent faulty operation of the bistables by transients generated due to contact bounce in the manual switch.
REFERENCES:
patent: 3388265 (1968-06-01), Wright
patent: 3560939 (1971-02-01), Lukacs
patent: 3626203 (1971-12-01), Bartlett
AEP-International Ltd.
Heyman John S.
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