Title:
LOW PRESSURE FLUORESCENT LAMP CONTROL DEVICE
Document Type and Number:
Japanese Patent JP3965608
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a low pressure fluorescent lamp control device at low cost with high integration, equipped with a floating switching circuit responding to an intelligent switching circuit.
SOLUTION: A control switch has a first and second switch circuits having first and second power transistors respectively to control a low pressure fluorescent lamp. The first switch circuit measures a period when the second power transistor is turned on with a measuring circuit 3, then turns on the first power transistor Ta during the period corresponding to the measuring period with a conduction control circuit 4.
Inventors:
Marco Bilgen
Application Number:
JP2098797A
Publication Date:
August 29, 2007
Filing Date:
January 20, 1997
Export Citation:
Assignee:
STMicroelectronics Society Anonymous
International Classes:
H05B41/24; H02M7/538; H03K4/06; H03K17/284; H03K17/687; H05B41/282; (IPC1-7): H05B41/24
Domestic Patent References:
| JP8009655A | ||||
| JP8008082A | ||||
| JP3070478A | ||||
| JP1274670A |
Attorney, Agent or Firm:
Takashi Koshiba
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