JPS61151464U - - Google Patents
Info
- Publication number
- JPS61151464U JPS61151464U JP3231985U JP3231985U JPS61151464U JP S61151464 U JPS61151464 U JP S61151464U JP 3231985 U JP3231985 U JP 3231985U JP 3231985 U JP3231985 U JP 3231985U JP S61151464 U JPS61151464 U JP S61151464U
- Authority
- JP
- Japan
- Prior art keywords
- lamp
- current
- lighting device
- current detection
- 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
- 238000001514 detection method Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
- Facsimile Scanning Arrangements (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
Description
第１図は、本考案の一実施例に係る複写機用点
灯装置の回路図、第２図は、従来例に係る複写機
用点灯装置の回路図である。
Ｔ……インバータトランス、Ｌ１，Ｌ２……ラ
ンプ、Ｓ１，Ｓ２……電流検出部、Ｒ７……ラン
プＬ１を定電圧制御するための抵抗。
FIG. 1 is a circuit diagram of a lighting device for a copying machine according to an embodiment of the present invention, and FIG. 2 is a circuit diagram of a lighting device for a copying machine according to a conventional example. T...Inverter transformer, L1 , L2 ...Lamp, S1 , S2 ...Current detection unit, R7 ...Resistance for constant voltage control of the lamp L1 .
Claims (1)
１次側をスイツチングにより励磁し、２次側に接
続した複数の電流制限素子に各々ランプとランプ
電流の検出部を接続し、ランプを高周波点灯する
点灯装置に於いて、少くなくとも、１本のランプ
の電流の検出信号に基づいて、ランプ電流を定電
流制御すると共に他のランプと並列に抵抗を接続
し、このランプの電流検出部の検出信号に基づい
て、ランプに印加する最大電圧を定電圧制御する
事を特徴とする複写機用点灯装置。 (2) 定電流制御及び定電圧制御は、インバータ
トランスの１次側に接続したスイツチング素子を
パルス巾変調方式で制御することによつて行なう
ことを特徴とする実用新案登録請求の範囲第(1)
項記載の複写機用点灯装置。[Claims for Utility Model Registration] (1) The primary side of an inverter transformer that inputs DC power is excited by switching, and a lamp and a lamp current detection unit are connected to each of multiple current limiting elements connected to the secondary side. However, in a lighting device that lights lamps at high frequency, at least one lamp current is controlled at a constant current based on a current detection signal of one lamp, and a resistor is connected in parallel with other lamps. A lighting device for a copying machine, characterized in that a maximum voltage applied to a lamp is controlled at a constant voltage based on a detection signal from a current detection section of the lamp. (2) The constant current control and the constant voltage control are performed by controlling a switching element connected to the primary side of an inverter transformer using a pulse width modulation method. )
A lighting device for a copying machine as described in .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3231985U JPS61151464U (en) | 1985-03-08 | 1985-03-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3231985U JPS61151464U (en) | 1985-03-08 | 1985-03-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61151464U true JPS61151464U (en) | 1986-09-19 |
Family
ID=30533725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3231985U Pending JPS61151464U (en) | 1985-03-08 | 1985-03-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61151464U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007288872A (en) * | 2006-04-13 | 2007-11-01 | Rohm Co Ltd | Inverter device, light-emitting apparatus employing same, and image display apparatus |
-
1985
- 1985-03-08 JP JP3231985U patent/JPS61151464U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007288872A (en) * | 2006-04-13 | 2007-11-01 | Rohm Co Ltd | Inverter device, light-emitting apparatus employing same, and image display apparatus |
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