Ballast method and apparatus and coupling therefor

Details Ballast method and apparatus and coupling therefor Ballast method and apparatus and coupling therefor

1997-03-17

2000-02-29

Philogene, Haissa

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Silicon controlled rectifier ignition

315307, 315247, 315DIG7, H05B 3702

Patent

active

060313382

ABSTRACT:
A ballast is disclosed which can operate at an effective level of output with a number of different input voltage levels. A ballast is also disclosed that uses a ceramic as a heat sink for switching transistors. A ballast is further disclosed which uses a start signal for a power factor circuit to boost voltage after the load for the ballast has already had a current applied to it. Furthermore, a ballast is disclosed which has a transformer having a permeability which varies somewhat inversely with temperature over a given temperature range.

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patent: 5712536 (1998-01-01), Haas et al.
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Tape Substrates For Thick Film--Publisher: Kyocera Substrts.

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