JPH0263472U - - Google Patents
Info
- Publication number
- JPH0263472U JPH0263472U JP14211688U JP14211688U JPH0263472U JP H0263472 U JPH0263472 U JP H0263472U JP 14211688 U JP14211688 U JP 14211688U JP 14211688 U JP14211688 U JP 14211688U JP H0263472 U JPH0263472 U JP H0263472U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output
- transformer
- resistors
- rectifier circuit
- 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
- 230000010355 oscillation Effects 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims 2
- 239000003990 capacitor Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 1
Description
第１図は絶縁抵抗計に用いた本考案に係る直流
高電圧発生回路抗計の一実施例の接続図、第２図
は第１図装置の動作を説明するための波形図であ
る。
１０…電池電源、２０…発振回路、３０…パワ
ートランジスタ、４０…トランス、５０…整流回
路、６１，６２…端子、７０…積分回路。
FIG. 1 is a connection diagram of an embodiment of the DC high voltage generating circuit resistance meter according to the present invention used in an insulation resistance meter, and FIG. 2 is a waveform diagram for explaining the operation of the device shown in FIG. 1. DESCRIPTION OF SYMBOLS 10... Battery power supply, 20... Oscillation circuit, 30... Power transistor, 40... Transformer, 50... Rectifier circuit, 61, 62... Terminal, 70... Integrating circuit.
Claims (1)
にその発振周波数が選ばれた発振回路、この発振
回路の出力がパワートランジスタを介してその一
次巻線に供給される前記トランス、このトランス
の二次巻線に接続された整流回路、この整流回路
の出力を検出する第１の抵抗器と前記整流回路の
出力とは逆極性の基準電圧源に接続された第２の
抵抗器及び第１と第２の抵抗器に流れる電流の差
を積分する演算増幅器とコンデンサよりなる積分
回路を具備し、この積分回路の出力を前記発振回
路に加えてこの発振回路の出力をバースト特性を
持つた発振状態を作ることによつて前記整流回路
の出力を一定値に制御するようにしたことを特徴
とする直流高電圧発生回路。 An oscillation circuit whose oscillation frequency is selected so that a small step-up transformer can be used with high efficiency, the transformer whose output is supplied to its primary winding via a power transistor, and the secondary winding of this transformer. a rectifier circuit connected to the line, a first resistor for detecting the output of the rectifier circuit, a second resistor connected to a reference voltage source having a polarity opposite to that of the output of the rectifier circuit, and the first and second resistors. It is equipped with an integrating circuit consisting of an operational amplifier and a capacitor that integrates the difference in the current flowing through the resistors, and the output of this integrating circuit is added to the oscillating circuit to create an oscillating state with burst characteristics. A DC high voltage generating circuit characterized in that the output of the rectifying circuit is controlled to a constant value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14211688U JPH0637342Y2 (en) | 1988-10-31 | 1988-10-31 | DC high voltage generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14211688U JPH0637342Y2 (en) | 1988-10-31 | 1988-10-31 | DC high voltage generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0263472U true JPH0263472U (en) | 1990-05-11 |
| JPH0637342Y2 JPH0637342Y2 (en) | 1994-09-28 |
Family
ID=31407788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14211688U Expired - Lifetime JPH0637342Y2 (en) | 1988-10-31 | 1988-10-31 | DC high voltage generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0637342Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018196259A (en) * | 2017-05-18 | 2018-12-06 | キヤノン株式会社 | Power supply device and image forming apparatus |
-
1988
- 1988-10-31 JP JP14211688U patent/JPH0637342Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018196259A (en) * | 2017-05-18 | 2018-12-06 | キヤノン株式会社 | Power supply device and image forming apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0637342Y2 (en) | 1994-09-28 |
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