Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1977-07-11
1979-12-25
Miller, Jr., Stanley D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307293, 328 87, A03K 1726, H03K 1756
Patent
active
041807472
ABSTRACT:
A switching circuit is disclosed for eliminating the effects of contact bounce in a movable contact switch connected between a voltage source and the input of a switching transistor. When the movable contact switch is closed, bouncing of the contacts undesirably produces a momentary voltage pulse which may produce false switching of the switching transistor. To avoid false switching, a coupling circuit is connected between the movable contact switch and the input of the transistor switch and includes a time constant circuit which has a different time constant for a positive going control voltage than for a negative going control voltage. The time constant circuit has longer time constant for a pulse of the polarity of the aforementioned momentary pulse than for the opposite polarity pulse whereby the transistor switch is prevented from responding to the momentary pulse.
REFERENCES:
patent: 3252045 (1966-05-01), Griffin
patent: 3275851 (1966-09-01), Bedingfield
patent: 3444394 (1969-05-01), Colvson
patent: 3943381 (1976-03-01), Uchidoi
Davies B. P.
Miller, Jr. Stanley D.
Xenex Corporation
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