JPS61224864A - High voltage generator - Google Patents
High voltage generatorInfo
- Publication number
- JPS61224864A JPS61224864A JP6377785A JP6377785A JPS61224864A JP S61224864 A JPS61224864 A JP S61224864A JP 6377785 A JP6377785 A JP 6377785A JP 6377785 A JP6377785 A JP 6377785A JP S61224864 A JPS61224864 A JP S61224864A
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- circuit
- secondary side
- primary
- high voltage
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/145—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
- H02M7/155—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は半導体素子を利用した高電圧発生装置に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a high voltage generator using a semiconductor element.
１次側に特公昭４２−１４２５４号公報に開示されてい
るような両方向性の半導体素子を用いたスイッチング回
路を有し、このスイッチング回路で発生するスイッチン
グパルスをスイッチングトランスを介して２次側に高圧
パルスを誘起させ、このパルスを整流して高電圧を発生
させる高電圧発生装置が知られている。しかし、従来の
この種の高電圧装置は電界放射ノイズの点については配
慮されていなかったので、連続使用すると電界放射ノイ
ズの影響を受け、テレビ、ラジオなどの家庭電器品やコ
ンピュータなどのエレクトロニクス製品および無線器な
どに電波障害を引き起すなどの欠点を有していた。The primary side has a switching circuit using a bidirectional semiconductor element as disclosed in Japanese Patent Publication No. 42-14254, and the switching pulses generated by this switching circuit are transferred to the secondary side via a switching transformer. 2. Description of the Related Art A high voltage generator is known that induces a high voltage pulse and rectifies the pulse to generate a high voltage. However, conventional high-voltage devices of this type did not take into account field emission noise, so if they are used continuously, they will be affected by field emission noise, and household appliances such as televisions and radios, and electronic products such as computers It also had drawbacks such as causing radio wave interference to radio equipment.
本発明の目的は電界放射ノイズの少ない高電圧発生装置
を提供することにある。An object of the present invention is to provide a high voltage generator with less field emission noise.
パルスによる高電圧装置の電界放射ノイズが出るのは絶
縁変圧器を使うと２次側の電位が大地電位に対して安定
しないために発生することが判った。本発明はこの点に
注目し、２次側の電位を安定させるために、１次側回路
と２次側回路の各極性間をコンデンサを介してそれぞれ
接続したことを特徴とするものである。It has been found that the field emission noise of high-voltage equipment due to pulses is caused by the fact that when an isolation transformer is used, the potential on the secondary side is not stable with respect to the ground potential. The present invention has focused on this point and is characterized in that each polarity of the primary side circuit and the secondary side circuit is connected via a capacitor in order to stabilize the potential on the secondary side.
以下、本発明の一実施例を第１図および第２図により説
明する。An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.
第１図は直流高電圧発生回路を示すもので、商用電源１
にはダイオード２と抵抗３と両方向半導体素子５を直列
に接続し、コンデンサ４を前記ダイオード２と抵抗３の
間に接続した１次側回路を接続すると共に、該１次側回
路をパルストランス６の１次側に接続している。そして
、前記パルストランス６の２次側にはダイオード７とコ
ンデンサ８からなる２次側回路を接続している。９．１
０はコンデンサで１次側回路と２次側回路の各極性間を
接続した回路に設けられている。本回路の動作は商用電
源１を回路に印加するとダイオード２により半波整流さ
れた電圧は抵抗３を通してコンデンサ４に充電され、こ
の電圧が両方向半導体素子５の降伏電圧Ｖ、。に達する
と両方向半導体素子５はオン状態となり、パルストラン
ス６の１次巻線にパルス電圧が印加される。このパルス
電圧はパルストランスの巻線比によって定まる高電圧に
昇圧され、ダイオード７により整流され、さらにコンデ
ンサ８により平滑されて直流高電圧が得られる。第１図
のＡ−Ｅ各部の波形を第２図に示す。Figure 1 shows the DC high voltage generation circuit.
is connected to a primary side circuit in which a diode 2, a resistor 3, and a bidirectional semiconductor element 5 are connected in series, and a capacitor 4 is connected between the diode 2 and the resistor 3, and the primary side circuit is connected to a pulse transformer 6. Connected to the primary side of A secondary circuit consisting of a diode 7 and a capacitor 8 is connected to the secondary side of the pulse transformer 6. 9.1
0 is a capacitor provided in a circuit connecting each polarity of the primary side circuit and the secondary side circuit. The operation of this circuit is such that when a commercial power supply 1 is applied to the circuit, a voltage half-wave rectified by a diode 2 is charged to a capacitor 4 through a resistor 3, and this voltage becomes the breakdown voltage V of the bidirectional semiconductor element 5. When the bidirectional semiconductor element 5 reaches the ON state, a pulse voltage is applied to the primary winding of the pulse transformer 6. This pulse voltage is boosted to a high voltage determined by the winding ratio of the pulse transformer, rectified by a diode 7, and smoothed by a capacitor 8 to obtain a DC high voltage. FIG. 2 shows waveforms at each section A to E in FIG. 1.
１次側回路と２次側回路をプラス側はコンデンサ９を、
マイナス側はコンデンサ１０を接続すると２次側に発生
する高電圧のうち交流分のみが電源側と接続され、電位
的に大地電位に対して安定となる。本実施例によれば高
電圧側が交流的に大地電位に対して安定になるため電界
放射ノイズの量を少なくする効果がある。第３図は交流
の高電圧側発生回路を示すもので、第１図に示した２次
側回路のコンデンサ８を１次側回路と２次側回路のマイ
ナス側の両極性間を接続した回路に設ける。これにより
パルストランス６の２次側に安定した電界放射ノイズの
少ない交流の高電圧を発生させることができる。本発明
によれば電界放射ノイズを約１／１０ （約２０ ｄＢ
）に減少できるので、連続使用してもテレビ、ラジオな
どの家庭電器品やコンピュータなどのエレクトロニクス
製品および無線器などに電波障害を引き起こすことがな
くなる効果がある。The positive side of the primary side circuit and secondary side circuit is the capacitor 9,
When the capacitor 10 is connected to the negative side, only the alternating current component of the high voltage generated on the secondary side is connected to the power supply side, and the potential becomes stable with respect to the ground potential. According to this embodiment, the high voltage side becomes stable with respect to the ground potential in an alternating current manner, which has the effect of reducing the amount of field emission noise. Figure 3 shows an AC high voltage side generation circuit, in which the capacitor 8 of the secondary side circuit shown in Figure 1 is connected between the negative side polarities of the primary side circuit and the secondary side circuit. Provided for. As a result, a stable high alternating current voltage with less field emission noise can be generated on the secondary side of the pulse transformer 6. According to the present invention, the field emission noise can be reduced to about 1/10 (about 20 dB
), which has the effect of eliminating radio wave interference in home appliances such as televisions and radios, electronic products such as computers, and radio equipment even when used continuously.
本発明は上記の如くスイッチングトランスの１次側回路
と２次側回路の各極性間をコンデンサを介してそれぞれ
接続したので、電界放射ノイズの少ない高電圧発生装置
を得ることができる。In the present invention, as described above, each polarity of the primary side circuit and the secondary side circuit of the switching transformer is connected via a capacitor, so that a high voltage generator with less field emission noise can be obtained.
第１図は本発明の一実施例の直流高電圧発生回路図、第
２図は第１図の各部の波形図、第３図は他の実施例の交
流高電圧発生回路図である。
１・・・商用電源、２・・・ダイオード、３・・・抵抗
器、４・・・コンデンサ、５・・・両方向性半導体素子
、６・・・パルストランス、７・・・ダイオード、８・
・・コンデンサ、９・・・コンデンサ、１０・・・コン
デンサ。
代理人 弁理士 秋 本 正 実
第１図
第２図FIG. 1 is a DC high voltage generation circuit diagram of one embodiment of the present invention, FIG. 2 is a waveform diagram of each part of FIG. 1, and FIG. 3 is an AC high voltage generation circuit diagram of another embodiment. DESCRIPTION OF SYMBOLS 1... Commercial power supply, 2... Diode, 3... Resistor, 4... Capacitor, 5... Bidirectional semiconductor element, 6... Pulse transformer, 7... Diode, 8...
... Capacitor, 9... Capacitor, 10... Capacitor. Agent Patent Attorney Tadashi Akimoto Figure 1 Figure 2
Claims (1)
有し、このスイッチング回路で発生するスイッチングパ
ルスを昇圧するスイッチングトランスを介して２次側に
高圧パルスを誘起せしめ、このパルスを整流して高電圧
を発生させる高電圧発生装置において、前記スイッチン
グトランスの１次側回路と２次側回路の各極性間をコン
デンサを介してそれぞれ接続したことを特徴とする高電
圧発生装置。The primary side has a switching circuit composed of semiconductor elements, and a high-voltage pulse is induced on the secondary side via a switching transformer that boosts the switching pulse generated by this switching circuit, and this pulse is rectified to generate a high-voltage pulse. A high voltage generator for generating voltage, characterized in that each polarity of the primary side circuit and the secondary side circuit of the switching transformer is connected via a capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6377785A JPS61224864A (en) | 1985-03-29 | 1985-03-29 | High voltage generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6377785A JPS61224864A (en) | 1985-03-29 | 1985-03-29 | High voltage generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61224864A true JPS61224864A (en) | 1986-10-06 |
Family
ID=13239139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6377785A Pending JPS61224864A (en) | 1985-03-29 | 1985-03-29 | High voltage generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61224864A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100829618B1 (en) * | 2002-03-19 | 2008-05-16 | 엘지전자 주식회사 | Circuit for noise attenuation |
| WO2013062686A3 (en) * | 2011-10-25 | 2013-08-29 | Apple Inc. | Noise suppression circuit for power adapter |
-
1985
- 1985-03-29 JP JP6377785A patent/JPS61224864A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100829618B1 (en) * | 2002-03-19 | 2008-05-16 | 엘지전자 주식회사 | Circuit for noise attenuation |
| WO2013062686A3 (en) * | 2011-10-25 | 2013-08-29 | Apple Inc. | Noise suppression circuit for power adapter |
| US9042132B2 (en) | 2011-10-25 | 2015-05-26 | Apple Inc. | Noise suppression circuit for power adapter |
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