Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor
Reexamination Certificate
2006-05-23
2006-05-23
Dinkins, Anthony (Department: 2831)
Electricity: electrical systems and devices
Electrostatic capacitors
Fixed capacitor
C361S328000, C361S763000, C029S025410
Reexamination Certificate
active
07050287
ABSTRACT:
A high voltage sign ballast capacitor assembly is disclosed. The assembly includes two components for the sign ballast operation, namely a main capacitor element for power factor correction and up to six starting capacitors for aiding in starting under cold weather conditions. The main capacitor element is arranged and configured to divide the necessary capacitance into several capacitors connected in series. By doing so, the voltage is divided across each of the series capacitors resulting in reduced voltage stress and a reduction in the risk of corona arcing. The assembly is preferably constructed as a modular printed circuit board and a sleeve that houses the circuit board. The circuit board allows for the incorporation of multiple lead configurations, multiple start capacitors, and bleed resistors.
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A Primer on Power Factor Correction, EC&M Web Site, pp. 1-7, www.ecmweb.com/mag/electric, printed Aug. 2, 2004.
American Shizuki Corporation (ASC Capacitors)
Merchant & Gould P.C.
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