Electrical transmission or interconnection systems – Personnel safety or limit control features – Interlock
Patent
1984-11-13
1987-01-20
Zazworsky, John
Electrical transmission or interconnection systems
Personnel safety or limit control features
Interlock
307359, 307306, 328151, H03K 1700, H03K 1792
Patent
active
046381856
ABSTRACT:
An analog signal measuring apparatus has: a sampling gate circuit, having a plurality of input terminals including an analog signal input terminal and a feedback signal input terminal, for generating an output signal of high or low level when a sum of input signals goes beyond or falls below a predetermined threshold value; a signal generating circuit, connected to an output terminal of the sampling gate circuit, for changing an output signal by a predetermined level toward a direction in which an output signal level of the sampling gate circuit is inverted when a trigger signal is applied to the signal generating circuit, and for supplying a feedback signal to the feedback signal input terminal of the sampling gate circuit; and a read circuit for generating a value obtained when the feedback signal from the signal generating circuit converges, the feedback signal corresponding to a value of an analog signal supplied to the analog signal input terminal, wherein a ratio of an increment .DELTA.I0 to a decrement .DELTA.I1 in a change in the output from the signal generating circuit is controlled in response to a control signal.
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patent: 4268863 (1981-05-01), Los
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S. M. Faris, Appl. Phys. Lett. 36(12), pp. 1005-1007, 1980.
D. B. Tuckerman, Appl. Phys. Lett. 36(12), pp. 1008-1010, 1980.
Kobayashi Kensuke
Tazoh Yasuo
Iwatsu Electric Co. Ltd.
Nippon Telegraph & Telephone Public Corporation
Zazworsky John
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