Drive circuit for illumination unit
First Claim
1. An illumination unit drive circuit for driving a plurality of illumination units, the illumination unit drive circuit comprising:
- a plurality of output transformers,wherein each of said output transformers is a 1 input-plural output type transformer,wherein each of said output transformers has a primary side and a secondary side, the primary side of each output transformer having one primary winding, and the secondary side of each output transformer having a plurality of secondary windings,wherein the primary sides of said plurality of output transformers are connected,wherein AC signals are inputted to the primary sides of said output transformers,wherein a high tension output is induced at the secondary side of each of said plurality of output transformers,wherein the plurality of illumination units are operated by the high tension output,wherein the plurality of illumination units comprises at least a first illumination unit and a second illumination unit,wherein each of the plurality of illumination units includes a first electrode and a second electrode,wherein the secondary side of each of said output transformers includes at least one high tension terminal,wherein the first electrode of the first illumination unit is connected to a first one of said high tension terminals, and the first electrode of the second illumination unit is connected to a second one of said high tension terminals, andwherein the first one of said high tension terminals and the second one of said high tension terminals are in a counter phase relation with one another.
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Accused Products
Abstract
In case of driving a plurality of lamps with the use of a plurality of output transformers, a difference in the bright-ness of each lamp occurs by a dispersion of characteristics of the output transformers, and an object is to prevent such troubles. For this purpose, a primary side of a plurality of output transformers of a one input-plural output type are respectively connected, and illumination units are connected to the secondary side of each output transformer. All of the secondary output terminals of each output transformer are connected to the secondary output terminals of counter phase and are connected by forming a loop circuit with the connection of the output terminals in series in closed loom form. The illumination units are connected between the secondary output terminals of the output transformer and the output terminal of the other output transformer of counter phase with the output terminal.
31 Citations
19 Claims
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1. An illumination unit drive circuit for driving a plurality of illumination units, the illumination unit drive circuit comprising:
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a plurality of output transformers, wherein each of said output transformers is a 1 input-plural output type transformer, wherein each of said output transformers has a primary side and a secondary side, the primary side of each output transformer having one primary winding, and the secondary side of each output transformer having a plurality of secondary windings, wherein the primary sides of said plurality of output transformers are connected, wherein AC signals are inputted to the primary sides of said output transformers, wherein a high tension output is induced at the secondary side of each of said plurality of output transformers, wherein the plurality of illumination units are operated by the high tension output, wherein the plurality of illumination units comprises at least a first illumination unit and a second illumination unit, wherein each of the plurality of illumination units includes a first electrode and a second electrode, wherein the secondary side of each of said output transformers includes at least one high tension terminal, wherein the first electrode of the first illumination unit is connected to a first one of said high tension terminals, and the first electrode of the second illumination unit is connected to a second one of said high tension terminals, and wherein the first one of said high tension terminals and the second one of said high tension terminals are in a counter phase relation with one another. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 15)
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9. An illumination unit drive circuit for driving a plurality of illumination units the illumination unit drive circuit comprising:
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a plurality of output transformers, wherein each of said output transformers is a 1 input-plural output type transformer, wherein each of said output transformers has a primary side and a secondary side, the primary side of each output transformer having one primary winding, and the secondary side of each output transformer having a plurality of secondary windings, wherein the primary sides of said plurality of output transformers are connected, wherein the plurality of illumination units are illuminated by a high tension output induced at the secondary side of each of said plurality of output transformers, wherein a loop circuit is formed by connecting all of the secondary windings of said output transformers in series in a closed loop state type, and wherein one or more of the illumination units are connected between respective pairs of the secondary windings of said plurality of output transformers. - View Dependent Claims (10, 11, 12, 13, 14, 19)
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16. An illumination unit drive circuit for driving a plurality of illumination units, the illumination unit drive circuit comprising:
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a plurality of output transformers, wherein each of said output transformers is a 1 input-multiple output type transformer, wherein each of said output transformers has a primary side and a secondary side, the primary side of each output transformer having one primary winding, and the secondary side of each output transformer having a plurality of secondary windings, wherein the primary sides of said plurality of output transformers are connected, wherein the plurality of illumination units are illuminated by a high tension output induced at the secondary side of each of said plurality of output transformers, wherein a plurality of the secondary windings of said output transformers are connected in series in a closed loop form so as to provide a loop circuit so that secondary output terminals of said output transformers in a counter phase relation are connected, and wherein the plurality of illumination units are connected to the loop circuit so that a voltage of a counter phase is impressed to electrodes of both terminals of the plurality of illumination units.
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17. An illumination unit drive circuit for driving a plurality of illumination units, the illumination drive circuit comprising:
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a single output transformer, wherein said single output transformer is a 1 input-plural output type transformer, wherein said single output transformer has a primary side and a secondary side, the primary side of said single output transformer having one primary winding, and the secondary side of said single output transformer having a plurality of secondary windings, wherein the plurality of illumination units are connected to the secondary side of said single output transformer, wherein the plurality of illumination units are illuminated by a high tension output induced at the secondary side of said single output transformer, wherein all or a plurality of secondary outputs of said single output transformer are connected in series in a closed loop form so as to form a loop circuit so that the secondary output terminals which are in a counter phase relation are connected, and wherein a plurality of the illumination units are connected to the loop circuit so that a voltage of a counter phase is impressed to electrodes of both terminals of the plurality of illumination units. - View Dependent Claims (18)
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Specification