Gas-filled discharge tube

Details Gas-filled discharge tube Gas-filled discharge tube

H - Electricity

01

J

313/135

H01J 17/16 (2006.01) H01J 17/18 (2006.01) H01J 17/40 (2006.01) H01T 1/00 (2006.01)

Patent

CA 2019909

ABSTRACT OF THE DISCLOSURE A gas-filled discharge tube of a compact construction for use as a series gap in the ignition system of an automotive spark-ignition engine and the like. The gas-filled discharge tube comprises an insu- lating tube unit having a tube provided with openings of a diameter smaller than the inside diameter thereof in the opposite ends thereof, a pair of electrode bases closely attached to the opposite ends of the tube so as to seal the openings, a pair of perforated discharge elec- trodes attached respectively to the opposite inner surfaces of the electrode bases to form a series gap, and an inert gas filling the tube. Since the diameter of the electrode bases sealing the comparatively small openings is comparatively small, the electrode bases of a compar- atively small diameter may be used. Thus, the capacitance between the electrode bases, hence the capacitance of the gas-filled discharge tube, is comparatively small, which enables the firing potential of the gas-filled discharge tube to be increased without increasing the capac- itance of the same.

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