Title:
ライン電流を連続導通させる電子安定器
Document Type and Number:
Japanese Patent JP2004512662
Kind Code:
A
Abstract:
An electronic ballast is configured to receive the input from a power source in order to control operation of a lamp connected to the electronic ballast. The ballast includes a positive side bus voltage line and a ground reference line. An input section is connected to the power source, to the positive side bus voltage line and the ground reference line. A complementary pair of switches, connected to bus and to the resonant network, is controlled by a gate drive network. The gate drive network receives feedback signals that is coupled to transformer and controls operation of the set of switches using the received and further processed signals. A triac dimmer is connected between the power source and the input section for providing a dimming capability. A resonant network includes at least a first resonant capacitor connected to the resonant network and to at least one of the positive side bus voltage line and the ground reference line. A second resonant capacitor is connected to the first resonant capacitor and to the input section. At least a portion of resonant current from the second resonant capacitor is applied back to the input section. The portion of resonant current applied back to the input section is sufficient to maintain a minimum triac holding current. In another embodiment of the present invention, a lamp is connected within the ballast circuit such that a portion of its current is also fed to the input circuit.
Inventors:
Chen, Timothy
Neilon, Louis Robert
Neilon, Louis Robert
Application Number:
JP2002538723A
Publication Date:
April 22, 2004
Filing Date:
September 21, 2001
Export Citation:
Assignee:
GENERAL ELECTRIC COMPANY
International Classes:
H02M1/00; H02M1/42; H05B41/28; H05B41/24; H05B41/282; H05B41/392; (IPC1-7): H05B41/24; H05B41/282; H05B41/392
Attorney, Agent or Firm:
Kenichi Matsumoto
Hirokazu Ogura
Nobukazu Ito
Hirokazu Ogura
Nobukazu Ito