Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1972-06-16
1977-07-26
Miller, Jr., Stanley D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307213, 307218, 307293, H03K 1908
Patent
active
040385620
ABSTRACT:
A ladder static logic control system having static logic circuits that are logic equivalents of the electromagnetic, mechanical and other circuit components in a prior electromechanical ladder diagram. Ladder static logic circuits that are logic equivalents of electromagnetic devices such as control coils, latching coils and timer coils and having a built-in operating time delay to eliminate any logic race problems. A method of making the above ladder static logic control system by starting with a ladder diagram of a prior art electro-mechanical control system and substituting a ladder static logic circuit for each of the electro-mechanical component counterparts appearing therein.
REFERENCES:
patent: 3036222 (1962-05-01), Witt
patent: 3201601 (1965-08-01), Chevalier et al.
patent: 3538443 (1970-11-01), Tague
Autio William A.
Cutler-Hammer, Inc.
Miller, Jr. Stanley D.
Rather Hugh R.
Taken Michael E.
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