Direct current operable arc lamp

Details Direct current operable arc lamp Direct current operable arc lamp

1981-08-13

1983-11-15

Demeo, Palmer C.

Electric lamp and discharge devices

With gas or vapor

Having electrodes with geometrical relationship

313623, 313632, 313633, H01J 6106

Patent

active

044158297

ABSTRACT:
A D.C. operable, miniature, low-wattage, single ended, arc discharge lamp. The cathode electrode includes electrical field modifying means to insure that the arc strikes between the electrode tips. During high pressure (.about.10 atm) operation electrode heating of the anode is dominated by electron bombardment, which creates substantially higher heat at the anode tip than at the cathode tip (the cathode being heated by ion bombardment and cooled by thermionic electron emission). Heat conducted down the anode electrode is dissipated in the single press and contributes to the heat conduction in the closely adjacent cathode electrode thereby reducing the net heat loss therein and helping to maintain the desired cathode temperature.

REFERENCES:
patent: 4320322 (1982-03-01), Rothwell, Jr. et al.

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