Condition control system with special set point means

Details Condition control system with special set point means Condition control system with special set point means

1978-05-15

1980-07-01

Hix, L. T.

Electrical transmission or interconnection systems

Switching systems

Condition responsive

219492, 219493, 219499, 236 78D, 307134, G05B 1300

Patent

active

042108233

ABSTRACT:
A time proportional control means, shown as a temperature control system, utilizes an expanded time constant arrangement with a unidirectional type of digital counter. The control system also utilizes a pulse generating means that is linked to the set point control for the system. Any substantial change of the set point causes the pulse generating means to generate pulses that are used by a pulse responsive circuit to insure that the counter for the system is adjusted to cause the output of the system to correspond with the new set point position.

REFERENCES:
patent: 2761052 (1956-08-01), Knudsen
patent: 3514628 (1970-05-01), Pinckaers
patent: 3629607 (1971-12-01), Maddox
patent: 3649877 (1972-03-01), Friedman
patent: 3767936 (1973-10-01), Sweger

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