Metallized film capacitor and method of manufacture

Details Metallized film capacitor and method of manufacture Metallized film capacitor and method of manufacture

H - Electricity

01

G

334/17, 334/25

H01G 13/00 (2006.01) H01G 4/32 (2006.01) H01G 13/02 (2006.01)

Patent

CA 1124341

FANNIING -10 37. METALLIZED FILM CAPACITOR AND METHOD OF MANUFACTURE Abstract A rolled metallized film capacitor is manufactured by completely metallizing one surface of each of a pair of dielectric films, and advancing the films while laser scribing patterns of demetallized lines on the respective films which are wound together to provide a pair of capacitor plates of finite areas. As the films are advanced the laser scribing is con- trolled so that when the films are wound together, the lines on the respective films are in overlaying re- lationship on the core and peripheral windings, and are diverted to opposed marginal edge portions of the respective films on the intervening windings. When the rolled capacitor films are terminated and connected to a power source the opposed metallized areas on the core and peripheral windings are subjected to equal poten- tials, whereas the remainder of the windings present two metallized areas between the opposed margin lines which are subjected to potential of opposite polarity to accumulate charges and function as capacitor plates.

342163

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