JPS5655964A - Charger - Google Patents
ChargerInfo
- Publication number
- JPS5655964A JPS5655964A JP13158379A JP13158379A JPS5655964A JP S5655964 A JPS5655964 A JP S5655964A JP 13158379 A JP13158379 A JP 13158379A JP 13158379 A JP13158379 A JP 13158379A JP S5655964 A JPS5655964 A JP S5655964A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- power source
- resistances
- transformer
- 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
- Control Or Security For Electrophotography (AREA)
Abstract
PURPOSE: To compensate the fluctuations in applied voltage and the decrease in electric current and make corona discharging stable by detecting the voltage applied to internal conductors or the current flowing therein and controlling the output voltage of an electric power source based on the results of this detection.
CONSTITUTION: A high-voltage power source 4 is constituted by a transformer 41 which boosts the voltage of a commercial electric power source 6 and a diode bridge 42 which rectifies its secondary voltage, and a voltage detecting circuit 7 consisting of a series circuits of resistances 71, 72 is connected between the point of connection of internal conductors 2 and a current limiting resistance 5 and the earth. The output point P thereof is connected to an oscillating circuit 8 consisting of resistances 81, 84, 85, a capacitor 82 and a unijunction transistor 83, and the output terminals thereof are connected to the base of a transistor 9. An SCR11 for voltage controlling in series to the primary side of the transformer 41 is connected to the power source 6 so that gate bias is applied by the conduction of a photodetector 10b. Thereby, the stable corona discharging can be always effected.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13158379A JPS5655964A (en) | 1979-10-12 | 1979-10-12 | Charger |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13158379A JPS5655964A (en) | 1979-10-12 | 1979-10-12 | Charger |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5655964A true JPS5655964A (en) | 1981-05-16 |
Family
ID=15061441
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13158379A Pending JPS5655964A (en) | 1979-10-12 | 1979-10-12 | Charger |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5655964A (en) |
-
1979
- 1979-10-12 JP JP13158379A patent/JPS5655964A/en active Pending
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