JPS6474066A - Power source equipment - Google Patents
Power source equipmentInfo
- Publication number
- JPS6474066A JPS6474066A JP62228028A JP22802887A JPS6474066A JP S6474066 A JPS6474066 A JP S6474066A JP 62228028 A JP62228028 A JP 62228028A JP 22802887 A JP22802887 A JP 22802887A JP S6474066 A JPS6474066 A JP S6474066A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- power source
- light control
- bias
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Inverter Devices (AREA)
Abstract
PURPOSE:To reduce loss of circuit, by applying DC bias onto an output voltage from an output amount detection circuit then making negative feedback control corresponding to the output amount. CONSTITUTION:A fluorescent lamp is connected as a load of a power source equipment to constitute a lighting device for light control. A rectifier circuit 2 comprising a full-wave rectifier 21 and a smoothing capacitor 22 is connected through L-type filter circuits 11-12 to an AC power source, and a separately excited inverter circuit 3 having two MOSFET 31, 32 is connected between output terminals of the rectifier circuit 2. A starting circuit 4, a control system power source circuit 5, a light control circuit 6, a V-f converter 7 and a drive circuit 8 are further provided. The light control circuit 6 comprises a lamp current detecting circuit 61, a DC conversion circuit 62, a lamp voltage detecting circuit 63, an error amplifier 64, etc., and converts a PWM light control signal to a DC signal which is added as DC bias to a detected voltage. Consequently, output amount is reversely proportional to DC bias amount.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62228028A JPS6474066A (en) | 1987-09-11 | 1987-09-11 | Power source equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62228028A JPS6474066A (en) | 1987-09-11 | 1987-09-11 | Power source equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6474066A true JPS6474066A (en) | 1989-03-20 |
Family
ID=16870066
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62228028A Pending JPS6474066A (en) | 1987-09-11 | 1987-09-11 | Power source equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6474066A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007005258A (en) * | 2005-06-27 | 2007-01-11 | Matsushita Electric Works Ltd | Lighting system |
JP2007200889A (en) * | 2006-01-24 | 2007-08-09 | Kofukin Seimitsu Kogyo (Shenzhen) Yugenkoshi | Light modulation mode selection circuit, and discharge lamp drive device |
-
1987
- 1987-09-11 JP JP62228028A patent/JPS6474066A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007005258A (en) * | 2005-06-27 | 2007-01-11 | Matsushita Electric Works Ltd | Lighting system |
JP2007200889A (en) * | 2006-01-24 | 2007-08-09 | Kofukin Seimitsu Kogyo (Shenzhen) Yugenkoshi | Light modulation mode selection circuit, and discharge lamp drive device |
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