Switching state detecting apparatus, control unit and transmissi

Details Switching state detecting apparatus, control unit and transmissi Switching state detecting apparatus, control unit and transmissi

1996-06-11

1998-03-03

Bowler, Alyssa H.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307106, H03K 300

Patent

active

057246017

ABSTRACT:
A switching state detecting apparatus capable of preventing output voltage hunting caused by mechanical switch contacts bouncing when changing state and creating voltage fluctuation (chatter) comprises a passive filter connected to the switches and a comparator for comparing the output value of the RC filter with a threshold level to then output a voltage value. The comparator changes the threshold level when the output voltage of the comparator is inverted, thereby preventing the apparatus from hunting. The output of the comparator is potentially divided and the divided output potential is superposed onto an initial threshold level to provide a second threshold level exceeding the voltage chatter level of said switches.

REFERENCES:
patent: 3984773 (1976-10-01), Oda
patent: 4338529 (1982-07-01), Fujibayashi
patent: 4668875 (1987-05-01), Miyazaki et al.
patent: 4768191 (1988-08-01), Polcer
patent: 5005427 (1991-04-01), Ohmae
patent: 5059825 (1991-10-01), Yoshida
patent: 5159213 (1992-10-01), Johnson
patent: 5170076 (1992-12-01), Smith

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