Electric lamp and discharge devices: systems – Surge generator or inductance in the supply circuit
Patent
1991-10-18
1993-05-11
LaRoche, Eugene R.
Electric lamp and discharge devices: systems
Surge generator or inductance in the supply circuit
315283, H05B 3700
Patent
active
052104710
ABSTRACT:
A starting circuit for a discharge lamp includes a tapped ballast transformer connected at one end to an AC supply and at the other end to a discharge lamp. A capacitor and charging resistor are connected in series across the lamp. A breakdown switch device and a current-limiting resistor are connected in series with each other between the transformer tap and the junction between the capacitor and charging resistor. When the capacitor charges to the breakdown value, it discharges through the breakdown device, current-limiting resistor and transformer, producing an output pulse to start the lamp. The value of the current-limiting resistor is selected to limit and shape the peak of the output pulse.
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Flory, IV Isaac L.
Nuckolls Joe A.
'Hubbell Incorporated
Farley Walter C.
LaRoche Eugene R.
Presson Jerry M.
Zarabian A.
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