Power source for lighting apparatus
AssigneeToshiba Lighting & Technology Group
InventorsTsutomu Kakitani, Kenichi Inui
Life of this patent
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Abstract
An apparatus for operating discharge lamp. The apparatus includes a source of electrical power, switching devices for switching the electrical power, a control circuit for controlling the switching devices, a transformer having a primary winding for receiving the electrical power switched by the switching devices and a secondary winding for supplying power to the lighting apparatus, a resonant circuit including an inductor and a capacitor for regulating the frequency of the electrical power and a circuit for powering the control circuit, the powering circuit including a secondary winding on the inductor and an additional winding on the transformer connected in a differential manner.
Claims9
An apparatus for operating discharge lamp, comprising:
- a source of electrical power;
- switching means for switching the electrical power;
- control means for controlling the switching means;
- transformer means having a primary winding for receiving the electrical power switched by the switching means and a secondary winding for supplying power to the lighting apparatus;
- a resonant circuit including an inductor and a capacitor for regulating the frequency of the electrical power;
- and
- a circuit for powering the control means, said circuit including a secondary winding on the inductor and an additional winding on the transformer means connected in a differential manner.
Dependencies are inferred from the claim text.