RONALD M FIORELLO
Engineering in Tewksbury, MA
License number
Massachusetts 13783
Issued Date
Apr 24, 1992
Type
Engineer in Training
Address
Address
Tewksbury, MA 01876
Professional information
Electronic Ballast And Method For Arc Straightening
US Patent:
6522089, Feb 18, 2003
Filed:
Oct 23, 2001
Appl. No.:
10/002916
Inventors:
Canh Cong Duong - Salem MA
Ronald Fiorello - Tewksbury MA
Ronald Fiorello - Tewksbury MA
Assignee:
Orsam Sylvania Inc. - Danvers MA
International Classification:
H05B 3702
US Classification:
315308, 315291, 315307
Abstract:
A method and apparatus for controlling a lamp ballast having a DC-DC converter with first and second MOSFETs acting as switches alternately connecting a DC power source to a power transformer, with an output of the power transformer being connected to a DC-AC inverter driving the lamp. The first and second MOSFETs in the DC-DC converter are alternately opened and closed at a frequency that is swept repeatedly between predetermined minimum and maximum frequencies. A microcontroller-based feedback element determines instantaneous power consumption by the lamp and controls the MOSFETs through a pulse width modulator to continuously adjust a duty cycle of signals driving gates of the MOSFETs to maintain a desired level of power consumption.
Method And Circuit For Regulating Power In A High Intensity Discharge Lamp
US Patent:
7187136, Mar 6, 2007
Filed:
Oct 25, 2004
Appl. No.:
10/972810
Inventors:
Ronald M. Fiorello - Tewksbury MA, US
Assignee:
Osram Sylvania, Inc. - Danvers MA
International Classification:
H05B 37/00
US Classification:
315224, 315307
Abstract:
A circuit for controlling power to a high intensity discharge lamp is disclosed. The circuit according to one embodiment of the invention comprises a rectifier circuit coupled to receive an alternating current line voltage, and a boost/flyback converter coupled to the rectifier circuit which outputs a regulated DC bus voltage. A power control circuit also couples a feedback signal to the boost/flyback converter to regulate the power output of the boost/flyback converter. A method of controlling power to a high intensity discharge lamp is also disclosed. The method comprises steps of generating a DC voltage for the high intensity discharge lamp by way of a boost/flyback converter; monitoring the DC voltage and the current generated in the boost/flyback converter; and modifying the power output by the boost/flyback converter to regulate power based upon the voltage and the current.
Method And Circuit For Igniting And Powering A High Intensity Discharge Lamp
US Patent:
2006008, Apr 27, 2006
Filed:
Oct 25, 2004
Appl. No.:
10/972611
Inventors:
Ronald Fiorello - Tewksbury MA, US
International Classification:
H05B 37/02
US Classification:
315212000
Abstract:
A circuit for igniting a high intensity discharge lamp is disclosed. The circuit comprises a rectifier circuit coupled to receive an alternating current line voltage. A flyback converter coupled to the rectifier circuit has an inductor comprising a primary inductive winding and a secondary inductive winding. Finally, an open circuit voltage circuit coupled to the secondary inductive winding couples a supplement inductive winding to the secondary winding during ignition. A method of igniting a high intensity discharge lamp is also disclosed. The method comprises the steps of generating a DC voltage for the high intensity discharge lamp by way of a flyback converter; providing an inductive winding comprising a primary inductive winding and a secondary inductive winding in the flyback converter; and coupling a supplement inductive winding couple to the secondary winding during ignition.