Electricity: motive power systems – Plural – diverse or diversely controlled electric motors – Plural – diverse or diversely controlled sources of armature...
Reexamination Certificate
2006-10-10
2006-10-10
Duda, Rina (Department: 2837)
Electricity: motive power systems
Plural, diverse or diversely controlled electric motors
Plural, diverse or diversely controlled sources of armature...
C318S108000, C318S442000
Reexamination Certificate
active
07119504
ABSTRACT:
A protective circuit, for reducing electrical disturbances or interference during operation of a DC motor, features a series transistor (62) arranged in a supply lead from a DC voltage source (12) to a DC motor; an auxiliary voltage source (52), associated with that series transistor, having a substantially constant auxiliary voltage which is configured to make the series transistor (62) fully conductive when a supply voltage furnished by the DC voltage source is substantially free of electrical interference; and an analyzer circuit (32, 34, 36) for analyzing the supply voltage, which analyzer circuit is configured, upon the occurrence of electrical interference in the supply voltage, to increase the resistance of the series transistor (62) correspondingly, in order to reduce the influence of that electrical interference on the operation of the DC motor.
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Duda Rina
Oliver, Esq. Milton
Smith Tyrone
Ware Fressola Van Der Sluys & Adolphson LLP
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