JPH01150486U - - Google Patents
Info
- Publication number
- JPH01150486U JPH01150486U JP4535788U JP4535788U JPH01150486U JP H01150486 U JPH01150486 U JP H01150486U JP 4535788 U JP4535788 U JP 4535788U JP 4535788 U JP4535788 U JP 4535788U JP H01150486 U JPH01150486 U JP H01150486U
- Authority
- JP
- Japan
- Prior art keywords
- output
- power supply
- output voltage
- transformer
- limiting resistor
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims description 5
- 238000009499 grossing Methods 0.000 claims 1
- 230000006641 stabilisation Effects 0.000 claims 1
- 238000011105 stabilization Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 210000001072 colon Anatomy 0.000 description 1
Landscapes
- Fax Reproducing Arrangements (AREA)
- Control Of Voltage And Current In General (AREA)
- Dc-Dc Converters (AREA)
Description
第１図は第１の考案の実施例を示すグリツド電
源の回路図、第２図は電子写真複写機のスコロト
ロンチヤージヤと感光体ドラムとの間に電圧を印
加する回路の説明図、第３図は第２の考案の実施
例を示すグリツド電源の回路図、第４図及び第５
図は従来のグリツド電源の異なる例を示す回路図
、第６図は従来の第５図のグリツド電源の改良例
を示す部分的な回路図である。
１…変圧器（昇圧トランス）、２…パワーＭＯ
Ｓトランジスタ（スイツチング手段）、３…演算
増幅器、４…マイクロコンピユータ（ＣＰＵ）、
５…感光体ドラム、６…ストロコロンチヤージヤ
、７…コロナ放電ワイヤ、８…グリツド、９…定
電流源、１０…グリツド電源、１１，１２…出力
線、１３…電圧検出手段、Ｒ４…出力インピーダ
ンス制限用抵抗、Ｒ５，Ｒ６…出力電圧検出用抵
抗、Ｒ７…電流制限用抵抗。
Fig. 1 is a circuit diagram of a grid power supply showing an embodiment of the first invention; Fig. 2 is an explanatory diagram of a circuit for applying voltage between a scorotron charger and a photosensitive drum of an electrophotographic copying machine; Figure 3 is a circuit diagram of a grid power supply showing an embodiment of the second invention, Figures 4 and 5.
The figure is a circuit diagram showing a different example of the conventional grid power supply, and FIG. 6 is a partial circuit diagram showing an improved example of the conventional grid power supply shown in FIG. 1...Transformer (step-up transformer), 2...Power MO
S transistor (switching means), 3... operational amplifier, 4... microcomputer (CPU),
5... Photosensitive drum, 6... Stroke colon charger, 7... Corona discharge wire, 8... Grid, 9... Constant current source, 10... Grid power supply, 11, 12... Output line, 13... Voltage detection means, R4 ... Output impedance limiting resistor, R5 , R6 ...output voltage detection resistor, R7 ...current limiting resistor.
Claims (1)
ング手段と、該変圧器の２次側に発生する高電圧
を整流及び平滑して出力する手段と、その出力線
間に接続した複数の直列に接続した抵抗による出
力電圧検出手段と、該手段によつて検出される電
圧に応じて上記スイツチング手段を制御して出力
電圧の安定化制御を行なう制御回路とを備えた高
圧電源装置において、 上記出力電圧検出手段と並列にその出力電圧検
出手段の抵抗値より小さい抵抗値の出力インピー
ダンス制限用抵抗を接続したことを特徴とする高
圧電源装置。 ２ 請求項１記載の高圧電源装置において、出力
インピーダンス制限用抵抗を変圧器側に、出力電
圧検出手段を出力端子側に設け、その間に電流制
限用抵抗を直列に介挿したことを特徴とする高圧
電源装置。[Claims for Utility Model Registration] 1. Switching means for connecting and disconnecting the energizing circuit on the primary side of the transformer, means for rectifying and smoothing the high voltage generated on the secondary side of the transformer, and output line thereof. output voltage detection means using a plurality of series-connected resistors connected between the two, and a control circuit that controls the switching means according to the voltage detected by the means to perform stabilization control of the output voltage. A high-voltage power supply device characterized in that an output impedance limiting resistor having a resistance value smaller than a resistance value of the output voltage detection means is connected in parallel with the output voltage detection means. 2. The high voltage power supply device according to claim 1, characterized in that the output impedance limiting resistor is provided on the transformer side, the output voltage detecting means is provided on the output terminal side, and a current limiting resistor is inserted in series between them. High voltage power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988045357U JP2540861Y2 (en) | 1988-04-04 | 1988-04-04 | High voltage power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988045357U JP2540861Y2 (en) | 1988-04-04 | 1988-04-04 | High voltage power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01150486U true JPH01150486U (en) | 1989-10-18 |
| JP2540861Y2 JP2540861Y2 (en) | 1997-07-09 |
Family
ID=31271670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988045357U Expired - Lifetime JP2540861Y2 (en) | 1988-04-04 | 1988-04-04 | High voltage power supply |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2540861Y2 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS573525A (en) * | 1980-06-06 | 1982-01-09 | Fujitsu Denso | Power source |
| JPS60170462A (en) * | 1984-02-14 | 1985-09-03 | Ricoh Co Ltd | Switching regulator |
| JPS6127489U (en) * | 1984-07-24 | 1986-02-19 | 株式会社東芝 | power supply |
| JPS62104583U (en) * | 1985-12-20 | 1987-07-03 | ||
| JPS62263517A (en) * | 1986-05-10 | 1987-11-16 | Fujitsu Denso Ltd | Dummy load control circuit |
| JPS6333384U (en) * | 1986-08-15 | 1988-03-03 |
-
1988
- 1988-04-04 JP JP1988045357U patent/JP2540861Y2/en not_active Expired - Lifetime
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS573525A (en) * | 1980-06-06 | 1982-01-09 | Fujitsu Denso | Power source |
| JPS60170462A (en) * | 1984-02-14 | 1985-09-03 | Ricoh Co Ltd | Switching regulator |
| JPS6127489U (en) * | 1984-07-24 | 1986-02-19 | 株式会社東芝 | power supply |
| JPS62104583U (en) * | 1985-12-20 | 1987-07-03 | ||
| JPS62263517A (en) * | 1986-05-10 | 1987-11-16 | Fujitsu Denso Ltd | Dummy load control circuit |
| JPS6333384U (en) * | 1986-08-15 | 1988-03-03 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2540861Y2 (en) | 1997-07-09 |
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