Compact discharge lamp with conductive coating capacitvely coupl

Details Compact discharge lamp with conductive coating capacitvely coupl Compact discharge lamp with conductive coating capacitvely coupl

1987-10-16

1989-04-25

Moore, David K.

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Discharge device load

313318, 313635, 315 71, 315 85, 439616, 439619, H05B 4124

Patent

active

048251283

ABSTRACT:
The assembly has a low-pressure sodium discharge lamp (1), of which the outer envelope (4) has an electrically conducting coating (5), which is connected through a capacitor (29) to one of the current supply conductors (13) to the light source (3) of the lamp (1) and to the neutral conductor (18) of the power supply (2), which supplies an alternating voltage having a frequency of at least 80 kHz. The lamp holder (23) has an eccentrically arranged projection at its inner surface while the lamp cap (6) has an eccentrically arranged recess at its outer surface, which, when the lamp cap (6) is arranged in the lamp holder (23), engage with each other and guarantee a connection of the capacitor (29) to the neutral conductor (18). The lamp (1) is suitable for operation at mains voltage frequency and is still fitting into the lamp holder of mains voltage frequency equipment.

REFERENCES:
patent: 4406975 (1983-09-01), Nixon
patent: 4565944 (1986-01-01), Beurskens et al.
patent: 4636691 (1987-01-01), De Man et al.
patent: 4727294 (1988-02-01), Houkes et al.

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