JPS5713528A - Electric power supply device for lamp - Google Patents
Electric power supply device for lampInfo
- Publication number
- JPS5713528A JPS5713528A JP8654980A JP8654980A JPS5713528A JP S5713528 A JPS5713528 A JP S5713528A JP 8654980 A JP8654980 A JP 8654980A JP 8654980 A JP8654980 A JP 8654980A JP S5713528 A JPS5713528 A JP S5713528A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- lamp
- circuit
- controls
- constant
- 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
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
PURPOSE:To prevent generation of a defective copy, by supplying stable DC voltage to a lamp, and outputting a lamp disconnection signal immediately when the lamp has been disconnected, in an enlarge printer of a microfilm. CONSTITUTION:AC 100V is rectified 2 through a transformer 1, and voltage which has been smoothed 3 is inputted to a supply voltage controlling circuit 4 for obtaining optional constant voltage. An output of the circuit 4 is smoothed by a smoothing coil 5 and a capacitor 6, and is supplied to a lamp 8 as constant DC voltage. The circuit 4 detects and amplifies and error between its output voltage and reference voltage, by an error amplifier 16, controls the pulse width of a pulse generating circuit 15, turns on a TR10 by the pulse width from the circuit 15 in accordance with on and off signals from the outside to a transistor TR11, and controls the voltage so as to be constant. When the lamp 8 has been disconnected, the circuit 4 controls voltage at a point A so that it is raised higher than the prescribed voltage, rise of its output voltage is detected by a lamp disconnection detecting circuit 9, and an alarm is raised. In this way, generation of a defective copy is prevented.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8654980A JPS5713528A (en) | 1980-06-27 | 1980-06-27 | Electric power supply device for lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8654980A JPS5713528A (en) | 1980-06-27 | 1980-06-27 | Electric power supply device for lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5713528A true JPS5713528A (en) | 1982-01-23 |
Family
ID=13890079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8654980A Pending JPS5713528A (en) | 1980-06-27 | 1980-06-27 | Electric power supply device for lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5713528A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1367863A2 (en) * | 2002-05-29 | 2003-12-03 | Sumita Optical Glass, Inc. | Filament lamp light quantity control method and filament lamp light quantity control unit and filament lamp light source unit |
| US7122975B2 (en) | 2004-09-30 | 2006-10-17 | Sumita Optical Glass, Inc. | Filament lamp light quantity control method and filament lamp light quantity control unit and filament lamp light source unit |
| JP2011210660A (en) * | 2010-03-30 | 2011-10-20 | Panasonic Electric Works Co Ltd | Lighting device and lighting fixture using it |
-
1980
- 1980-06-27 JP JP8654980A patent/JPS5713528A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1367863A2 (en) * | 2002-05-29 | 2003-12-03 | Sumita Optical Glass, Inc. | Filament lamp light quantity control method and filament lamp light quantity control unit and filament lamp light source unit |
| EP1367863A3 (en) * | 2002-05-29 | 2004-05-12 | Sumita Optical Glass, Inc. | Filament lamp light quantity control method and filament lamp light quantity control unit and filament lamp light source unit |
| US6815911B2 (en) | 2002-05-29 | 2004-11-09 | Sumita Optical Glass, Inc. | Filament lamp light source unit and filament lamp light quantity control method |
| CN100452938C (en) * | 2002-05-29 | 2009-01-14 | 株式会社住田光学玻璃 | Method for controlling light of filament tube, light control device and light source device |
| US7122975B2 (en) | 2004-09-30 | 2006-10-17 | Sumita Optical Glass, Inc. | Filament lamp light quantity control method and filament lamp light quantity control unit and filament lamp light source unit |
| JP2011210660A (en) * | 2010-03-30 | 2011-10-20 | Panasonic Electric Works Co Ltd | Lighting device and lighting fixture using it |
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