Restrike ignitor
AssigneeHubbell Incorporated
InventorsRajesh Balan, Jayaraj Ramasamy
Life of this patent
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Abstract
An instant restrike igniter for use with a high-intensity discharge (HID) lamp and having a bleeder circuit including a resistor in parallel with a capacitor. The bleeder circuit in electrical communication with a voltage source. A transformer is in electrical communication with the bleeder circuit. The transformer includes a first winding that is in communication with and powers a lamp and a second winding. A triggering circuit is in electrical communication with the second winding of the transformer and the bleeder circuit. The triggering circuit has a minimum holding current of 50 mA and is configured to discharge the capacitor to generate high voltage pulses that are sent, via the transformer, to the lamp to reignite the lamp after a power interruption that extinguishes the lamp.
Claims18
An instant restrike ignitor for use with a high-intensity discharge (HID) lamp, the instant restrike ignitor comprising:
- a bleeder circuit including a resistor in parallel with a capacitor, the bleeder circuit in electrical communication with a voltage source;
- a transformer in electrical communication with the bleeder circuit, the transformer including a first winding that is in communication with and powers the HID lamp and a second winding;
- and
- a triggering circuit in electrical communication with the second winding of the transformer and the bleeder circuit, the triggering circuit having a minimum holding current of 50 mA and configured to discharge the capacitor to generate high voltage pulses that are sent, via the transformer, to the HID lamp to reignite the HID lamp after a power interruption that extinguishes the HID lamp,
- wherein the minimum holding current of 50 mA controls the number of high voltage pulses that are sent to the HID lamp to be five pulses or less.
An instant restrike ignitor for use with a high-intensity discharge (HID) lamp, the instant restrike ignitor comprising:
- a bleeder circuit including a resistor in parallel with a capacitor, the bleeder circuit in electrical communication with a voltage source;
- a transformer in electrical communication with the bleeder circuit, the transformer including a first winding that is in communication with and powers the HID lamp and a second winding;
- and
- a sidac having an input and an output, the input being in electrical communication with the second winding of the transformer and the output being in electrical the bleeder circuit, the sidac having a minimum holding current 50 mA and configured to discharge the capacitor to generate high voltage pulses that are sent, via the transformer, to the HID lamp to reignite the lamp after a power interruption that extinguishes the HID lamp.
A method of reigniting an arc of a lamp when there is a power interruption to the lamp that extinguishes the lamp, the method comprising:
- providing a triggering circuit in electrical communication with the lamp;
- providing voltage to the triggering circuit until a predetermined breakage voltage point is reached;
- and
- when the predetermined breakage voltage point is reached, discharging high voltage pulses to the lamp until a minimum holding current of 50 mA is reached, the minimum holding current of 50 mA controls the number of high voltage pulses that are sent to the HID lamp to be five pulses or less.
Dependencies are inferred from the claim text.