Thick film resistor for use in a vacuum and a high pressure disc

Electric lamp and discharge devices: systems – Combined load device or load device temperature modifying... – Load device and impedance

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

315 46, 315 47, 315 50, 315 52, 315 58, 315 60, 315 73, 338308, H01J 744

Patent

active

053312503

ABSTRACT:
A high pressure discharge lamp having a thick film resistor comprising a plurality of resistive elements. A first resistive element is included in a starting circuit for the lamp and a second resistive element is in series with the arc tube during lamp operation for flicker elimination. The integral thick film resistor facilitates mounting and connection of the resistor elements within the lamp envelope. Favorably, the resistor substrate has a surface emissivity of greater than about 0.5, and preferably greater than about 0.9, to provide sufficient radiation cooling within an evacuated outer lamp envelope to prevent resistor failure while keeping the size of the resistor small enough for use as a component in an HID lamp. Additionally, a suitable coating of low vapor pressure thickness covers the solder connecting the metallic resistor terminals to the substrate to prevent evaporation of the solder and its deposition on the inner surface of the outer lamp envelope.

REFERENCES:
patent: 4734612 (1988-03-01), Sasaki et al.
patent: 5159242 (1992-10-01), Ravi

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Thick film resistor for use in a vacuum and a high pressure disc does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Thick film resistor for use in a vacuum and a high pressure disc, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thick film resistor for use in a vacuum and a high pressure disc will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-522477

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.