H - Electricity – 01 – F
Patent
H - Electricity
01
F
H01F 38/00 (2006.01) H01F 38/10 (2006.01) H05B 41/00 (2006.01) H05B 41/04 (2006.01)
Patent
CA 2418747
The invention relates to a rod-core transformer for use as a starting transformer in the cap of a high-pressure discharge lamp for a motor vehicle headlight. According to the invention, the rod-core transformer has at least two cores (2, 3) which are in the form of rods and are arranged alongside one another, and on each of which a multilayer secondary winding (4, 5) is wound, with the respective layers (4a, 4b, 4c, 4d) and (5a, 5b, 5c, 5d) being connected in parallel and being arranged one above the other without any offset. Furthermore the secondary windings (4, 5) are electrically conductively connected to one another, with their total resistance being at most 2 .OMEGA.. The transformer according to the invention is particularly highly suitable for use as a starting transformer for high-pressure discharge lamps with a low operating voltage, for example halogen metal-vapour high-pressure discharge lamps which do not contain mercury.
Burkhardt Matthias
Cardarelli Herbert Maurizio
Roellgen Bernhard
Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh
Smart & Biggar
LandOfFree
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