Glowswitch starter with specific glass envelope composition

Details Glowswitch starter with specific glass envelope composition Glowswitch starter with specific glass envelope composition

1997-08-21

1999-02-16

Patel, Vip

Electric lamp and discharge devices

With gas or vapor

Envelope composition

313634, H01J 1716

Patent

active

058724273

ABSTRACT:
A glowswitch starter according to the invention is provided with a discharge vessel (1) which is closed in a gastight manner and which has a wall (2), with a pair of electrical conductors (3a, 3b) passed through a portion (2b) of the wall of the discharge vessel, and with a bimetal element (4a) in the discharge vessel which is conductively connected to one (3a) of the electrical conductors (3a, 3b), the discharge vessel containing an ionizable filling. The glowswitch starter according to the invention, which is characterized in that at least that portion (2b) of the wall through which the electrical conductors are passed is made from a glass containing at least 5% BaO by weight, has a short ignition delay time.

REFERENCES:
patent: 3849190 (1974-11-01), Foster et al.

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