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Zero energy-storage ballast for compact fluorescent lamps

Patent ·
OSTI ID:872492
 [1];  [2]
  1. Niskayuna, NY
  2. Rexford, NY
+ Show Author Affiliations
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.
Research Organization:
GENERAL ELECTRIC CO
DOE Contract Number:
FC36-97GO10236
Assignee:
General Electric Company (Schenectady, NY)
Patent Number(s):
US 5945783
OSTI ID:
872492
Country of Publication:
United States
Language:
English

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/315/
advantages
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ballast
bus
bus voltage
cfl
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compact
compact fluorescent
complementary-type
connected
control
control circuit
crossing
devices
efficacy
energy-storage
flickering
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fluorescent lamp
following
frequency
gates
gates connected
immediately
lamps
maintaining
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operational
oscillations
rapid
resonant
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restarts
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series
slightly
supply
switching
switching device
switching devices
tank
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zero crossing