Zero energy-storage ballast for compact fluorescent lamps

Patent · Fri Jan 01 00:00:00 EST 1999

OSTI ID:872492

Schultz, William Newell ^[1]; Thomas, Robert James ^[2]

---

1. Niskayuna, NY
2. Rexford, NY

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., Boston, MA (United States)
• 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

Related Subjects

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/