skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Zero energy-storage ballast for compact fluorescent lamps

Abstract

A CFL ballast includes complementary-type switching devices connected in series with their gates connected together at a control node. The switching devices supply a resonant tank circuit which is tuned to a frequency near, but slightly lower than, the resonant frequency of a resonant control circuit. As a result, the tank circuit restarts oscillations immediately following each zero crossing of the bus voltage. Such rapid restarts avoid undesirable flickering while maintaining the operational advantages and high efficacy of the CFL ballast.

Inventors:
 [1];  [2]
  1. Niskayuna, NY
  2. Rexford, NY
Issue Date:
Research Org.:
General Electric Co., Boston, MA (United States)
OSTI Identifier:
872492
Patent Number(s):
5945783
Assignee:
General Electric Company (Schenectady, NY)
Patent Classifications (CPCs):
H - ELECTRICITY H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR H05B - ELECTRIC HEATING
DOE Contract Number:  
FC36-97GO10236
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
zero; energy-storage; ballast; compact; fluorescent; lamps; cfl; complementary-type; switching; devices; connected; series; gates; control; node; supply; resonant; tank; circuit; tuned; frequency; near; slightly; result; restarts; oscillations; immediately; following; crossing; bus; voltage; rapid; avoid; undesirable; flickering; maintaining; operational; advantages; efficacy; tank circuit; zero crossing; fluorescent lamp; switching devices; control circuit; resonant frequency; bus voltage; switching device; compact fluorescent; gates connected; /315/

Citation Formats

Schultz, William Newell, and Thomas, Robert James. Zero energy-storage ballast for compact fluorescent lamps. United States: N. p., 1999. Web.
Schultz, William Newell, & Thomas, Robert James. Zero energy-storage ballast for compact fluorescent lamps. United States.
Schultz, William Newell, and Thomas, Robert James. Fri . "Zero energy-storage ballast for compact fluorescent lamps". United States. https://www.osti.gov/servlets/purl/872492.
@article{osti_872492,
title = {Zero energy-storage ballast for compact fluorescent lamps},
author = {Schultz, William Newell and Thomas, Robert James},
abstractNote = {A CFL ballast includes complementary-type switching devices connected in series with their gates connected together at a control node. The switching devices supply a resonant tank circuit which is tuned to a frequency near, but slightly lower than, the resonant frequency of a resonant control circuit. As a result, the tank circuit restarts oscillations immediately following each zero crossing of the bus voltage. Such rapid restarts avoid undesirable flickering while maintaining the operational advantages and high efficacy of the CFL ballast.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}

Patent:

Save / Share: