U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

High frequency, high efficiency quick restart lighting system

Patent 6555971 Issued on April 29, 2003. Estimated Expiration Date: Icon_subject June 13, 2020. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Two-wire electronic dimming ballast for gaseous discharge lamps
Patent #: 4392087
Issued on: 07/05/1983
Inventor: Zansky

Frequency modulation ballast circuit
Patent #: 4717863
Issued on: 01/05/1988
Inventor: Zeiler

Ballast for ionic conduction lamps
Patent #: 4876485
Issued on: 10/24/1989
Inventor: Fox

Driver circuit for power transistors
Patent #: 4937470
Issued on: 06/26/1990
Inventor: Zeiler

Method of operating gas-filled tubes
Patent #: 5039920
Issued on: 08/13/1991
Inventor: Zonis

Dimming method and device for fluorescent lamps used for backlighting of liquid crystal screens
Patent #: 5105127
Issued on: 04/14/1992
Inventor: Lavaud, et al.

Variable control, current sensing ballast
Patent #: 5287040
Issued on: 02/15/1994
Inventor: Lestician

Dimmable high power factor high-efficiency electronic ballast controller integrated circuit with automatic ambient over-temperature shutdown
Patent #: 5315214
Issued on: 05/24/1994
Inventor: Lesea

Lighting system with variable control current sensing ballast
Patent #: 5323090
Issued on: 06/21/1994
Inventor: Lestician

Lamp out detection for miniature cold cathode fluorescent lamp system
Patent #: 5652479
Issued on: 07/29/1997
Inventor: LoCascio, et al.

More ...

Inventor

Application

No. 592606 filed on 06/13/2000

US Classes:

315/224, Impedance or current regulator in the supply circuit315/291, CURRENT AND/OR VOLTAGE REGULATION315/307, Automatic regulation315/308Regulator responsive to plural conditions

Examiners

Primary: Wong, Don
Assistant: Alemu, Ephrem

Attorney, Agent or Firm

International Class

H05B 037/02

Abstract

The present invention is a high frequency, high efficiency start and quick restart system for lighting various types of lamps. It includes electronic circuitry and components mounted on a housing unit. These include hook ups for connecting and applying a power input to the circuitry; a switch for switching a lamp on and off, which switch means is connected to control power; auto-ranging voltage control circuitry; and a three stage power factor correction microchip controller. The microchip controller is a Bi-CMOS microchip and includes a feedback current sensor; a power factor correction regulator; bulb status feedback-means; a bulb voltage controller; a conditioning filter; a half-bridge; a DC output inverter; and, output and connection for a lamp.

PatentsPlus Images
Enhanced PDF formats
loading...
PatentsPlus: add to cart
PatentsPlus: add to cartSearch-enhanced full patent PDF image
$9.95more info
PatentsPlus: add to cart
PatentsPlus: add to cartIntelligent turbocharged patent PDFs with marked up images
$16.95more info
 
Sign InRegister
Username  
Password   
forgot password?