Communications: electrical – Digital comparator systems
Patent
1974-07-29
1976-07-06
Yusko, Donald J.
Communications: electrical
Digital comparator systems
340413, 340255, H04Q 916
Patent
active
039684776
ABSTRACT:
A control apparatus for controlling a plurality of electrical devices comprising a plurality of electrical devices, a central operation device for generating a plurality of control signals for controlling the electrical devices, the plurality of control signals comprising a first signal for driving a first electrical device and a second signal delayed in time from the first signal to permit discontinuance of the driving of the first electrical device if a high current is detected passing therethrough, a terminal operation device for each electrical device, a signal transmission line for transmitting the plurality of control signals from the central operation device to the terminal operation devices, a first terminal operation device for driving the first electrical device comprising a signal division circuit for dividing from the plurality of control signals said first and second signals, a driving circuit connected to the signal division circuit for driving the first electrical device in response to said first signal, a state detecting circuit for detecting a high current in the first electrical device, a state signal generating circuit connected to the state detecting circuit, the signal division circuit and the driving circuit for deactivating the driving circuit to discontinue the driving of the first electrical device only upon receipt of a signal from the state detecting circuit indicating high current in the first electrical device and receipt at the same time of said second signal, said second signal being delayed in time from said first signal so that high transient starting current in the first electrical device has subsided by the time of said second signal so that driving of the first electrical device will be discontinued when high current is present therein with the exception of the presence of high transient starting current.
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Ishii Mitsuaki
Nii Kazuo
Shimizu Osamu
Sumida Shizuo
Ueda Atsushi
Mitsubishi Denki & Kabushiki Kaisha
Toyo Kogyo Co. Ltd.
Yusko Donald J.
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