Metallized film wound capacitor having minimized inductive...

Details Metallized film wound capacitor having minimized inductive... Metallized film wound capacitor having minimized inductive...

H - Electricity

01

G

334/22, 334/5

H01G 4/32 (2006.01) H01G 1/14 (1985.01) H01G 1/147 (1985.01)

Patent

CA 1219922

-17- Abstract A method is disclosed for making a wound capacitor having decreased inherent inductance and a high self-resonant frequency. In making this capacitor, metallized film is wound around a non-conductive poly- carbonate core and a conductor is inserted through the entire length of the core. The wound metallized film is flattened and terminals are formed at opposite ends of the flattened wound capacitor. The conductor is folded over and electrically connected to one terminal and a metal contact is electrically connected to the other terminal. The electromagnetic field created around the conductor is approximately equal and in the opposite direction to the electromagnetic field created around the wound metallized film. Therefore, the inductive reactance of the conductor and the inductive reactance of the wound film are approximately equal. These reactances approximately cancel resulting in increased self-resonant frequency.

475034

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