Electric lamp and discharge devices: systems – Surge generator or inductance in the supply circuit – Circuit interrupter in the inductance circuit
Patent
1989-06-30
1991-09-10
Laroche, Eugene R.
Electric lamp and discharge devices: systems
Surge generator or inductance in the supply circuit
Circuit interrupter in the inductance circuit
315276, 315205, 315289, 315DIG5, H05B 4114
Patent
active
050476947
ABSTRACT:
A hot restart circuit includes a storage capacitor and SCR connected across a tapped portion of a ballast with a breakdown device to start the SCR. A charging circuit for the storage capacitor includes a diode, pumping capacitor and choke in series from the ballast tap to the AC line and a further diode interconnecting the capacitors. The pumping capacitor increases the charge on the storage capacitor in a step-wise fashion until the breakdown voltage is reached, whereupon starting pulses are applied to the lamp.
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Flory, IV Isaac L.
Nuckolls Joe A.
'Hubbell Incorporated
Dinh Son
Farley Walter C.
LaRoche Eugene R.
Presson Jerry M.
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