PHUONG THI HUYNH
Nail Technician in Mc Lean, VA
License number
Virginia 1206012247
Issued Date
Oct 30, 2001
Expiration Date
Oct 31, 2003
Category
Nail Technician License
Type
Nail Technician
Address
Address
Mc Lean, VA
Professional information
Ignition Scheme For A High Intensity Discharge Lamp
US Patent:
6160362, Dec 12, 2000
Filed:
Jan 7, 1998
Appl. No.:
9/004019
Inventors:
Michael Shone - Yorktown Heights NY
Phuong Huynh - McLean VA
Phuong Huynh - McLean VA
Assignee:
Philips Electronics North America Corporation - New York NY
International Classification:
H05B 3702
US Classification:
315308
Abstract:
An electronic ballast for reducing blackening of a high intensity discharge lamp, reducing stress on both the lamp and ballast components caused by excessive voltage and current flow and increasing the lamp's effective life. These advantages are achieved through a ballast controller which readjusts the operating frequency of the lamp during each of the three phases of lamp start-up to limit lamp voltage to a predetermined level.