Multi-lamp driving system
AssigneeAmbit Microsystems Corp.
InventorsWei-Hong Lin, Chia-Yuan Chen, Deng-Kang Chang, Cheng-Chia Hsu
Life of this patent
Estimating the term…
Abstract
A multi-lamp system for driving a lamp set having a first lamp and a second lamp comprises a driving circuit for converting a DC signal to an AC signal, a transformer having a primary side coupled to the driving circuit and a secondary side for outputting the AC power, and a current balance circuit coupled to the low voltage terminal of the lamp set for balancing the current values flowing through the first lamp and the second lamp. The current balance circuit comprises a magnetic core, a first winding coupled to the first lamp and a second winding coupled to the second lamp. The first winding and the second winding are wound on the magnetic core and have the same coil number.
Claims17
A multi-lamp driving system for driving a lamp set having a first lamp and a second lamp, comprising:
- a power supply circuit for supplying the lamp set with AC power;
- and
- a current balance circuit coupled between a secondary side of a transformer and a high voltage terminal of the lamp set for balancing the current values through the first lamp and the second lamp;
- wherein the current balance circuit comprises a magnetic core, a first winding electrically coupled to the first lamp, and a second winding electrically coupled to the second lamp, and the first winding and the second winding are wound on the magnetic core and the coil number of the first winding is equal to that of the second winding.
A multi-lamp driving system for driving a lamp set having a first lamp and a second lamp, the lamp set having a high voltage terminal and a low voltage terminal, the multi-lamp driving system comprising:
- a driving circuit for converting a DC signal to a AC signal;
- a transformer having a primary side coupled to the driving circuit;
- and
- a current balance circuit electrically coupled between a secondary side of the transformer and the high voltage terminal of the lamp set for balancing the current values flowing through the first lamp and the second lamp;
- wherein the current balance circuit comprises a magnetic core, a first winding coupled to the first lamp and a second winding coupled to the second lamp, and the first winding and the second winding are wound on the magnetic core and the coil number of the first winding is equal to that of the second winding.
A multi-lamp driving system for driving a lamp set having a plurality of lamps, comprising:
- a power supply circuit for supplying the lamp set with AC power;
- and
- a current balance circuit electrically coupled between a secondary side of a transformer and a high voltage terminal of the lamp set, for balancing the current values flowing through the lamps;
- wherein the current balance circuit comprises a magnetic core and a plurality of windings, each of the windings is electrically coupled to each of the lamps, and each of the windings is wound on the magnetic core with the same coil number.
Dependencies are inferred from the claim text.