JPS6318964A - Switching power source - Google Patents
Switching power sourceInfo
- Publication number
- JPS6318964A JPS6318964A JP16405086A JP16405086A JPS6318964A JP S6318964 A JPS6318964 A JP S6318964A JP 16405086 A JP16405086 A JP 16405086A JP 16405086 A JP16405086 A JP 16405086A JP S6318964 A JPS6318964 A JP S6318964A
- Authority
- JP
- Japan
- Prior art keywords
- primary
- potential
- voltage
- high frequency
- smoothing
- 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
- 238000009499 grossing Methods 0.000 claims abstract description 10
- 239000004020 conductor Substances 0.000 claims abstract description 4
- 239000011810 insulating material Substances 0.000 claims description 10
- 238000002955 isolation Methods 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- 239000012774 insulation material Substances 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 description 9
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000001629 suppression Effects 0.000 description 1
Landscapes
- Dc-Dc Converters (AREA)
- Power Conversion In General (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は雑音対策のために１シールド構造を有するスイ
ッチング電源に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a switching power supply having a one-shield structure for noise countermeasures.
従来の技術
従来、この種のスイッチング電源は、第３図に示すよう
な構成であった。第３図において、１はフィルターブロ
ックであり、雑音端子電圧を低減する。２は１次整流平
滑ブロックであり、入力した交流電圧を直流電圧に変換
する。３はスイッチング素子であり、前記直流電圧を所
定のデユーティ比と周波数を有する高周波交流電圧に変
換する。2. Description of the Related Art Conventionally, this type of switching power supply has had a configuration as shown in FIG. In FIG. 3, 1 is a filter block that reduces the noise terminal voltage. 2 is a primary rectifying and smoothing block that converts input AC voltage into DC voltage. 3 is a switching element which converts the DC voltage into a high frequency AC voltage having a predetermined duty ratio and frequency.
４は高周波絶縁トランスであり、前記高周波交流電圧を
２次側へ伝達する。６は２次整流平滑ブロックであり、
前記高周波絶縁トランス４の２次巻線に発生した高周波
交流電圧を直流電圧に変換し出力する。１−１．１−２
．１−３．１−４．６゜７は雑音対策用に設けられたコ
ンデンサで、１次−２次間にまたがるため、二重絶縁と
して２個直列に接続されている。4 is a high frequency isolation transformer, which transmits the high frequency AC voltage to the secondary side. 6 is a secondary rectification smoothing block,
The high frequency AC voltage generated in the secondary winding of the high frequency isolation transformer 4 is converted into a DC voltage and output. 1-1.1-2
．． 1-3.1-4.6°7 is a capacitor provided for noise countermeasures, and since it spans between the primary and secondary, two capacitors are connected in series for double insulation.
発明が解決しようとする問題点
このような従来の構成では前記雑音対策用コンデンサの
部品点数が多く、さらに１次−２次間絶縁要求の厳しい
場合には、１次−２次間の安定電位部分を容量結合させ
れば雑音低減が可能であっても、コンデンサを使用でき
ず、前記フィルターブロック１での負担が多大になると
いう問題でちった。Problems to be Solved by the Invention In such a conventional configuration, the number of parts of the noise suppression capacitor is large, and furthermore, when the requirement for insulation between the primary and secondary is severe, it is difficult to maintain a stable potential between the primary and secondary. Even if it is possible to reduce noise by capacitively coupling the sections, a problem arises in that a capacitor cannot be used and the load on the filter block 1 becomes heavy.
本発明はこのような問題点を解決するもので。The present invention solves these problems.
１次−２次間にコンデンサを使用することなく、両者の
安定電位部分を容量結合させることにより、雑音除去効
果を得ることを目的としたものである。The purpose is to obtain a noise removal effect by capacitively coupling the stable potential portions of the two without using a capacitor between the primary and secondary.
問題点を解決するための手段
この問題点を解決するために本発明は１従来幅射雑音対
策に用いられていた箔状導電材料のシールド板を２枚設
け、一方を１次側安定電位部、他方を２次側安定電位部
に接続い前記２枚のシールド板を所定の厚みを有する板
又は箔状の絶縁材料をはさみ込むように設置した構成に
しだものである。Means for Solving the Problems In order to solve this problem, the present invention provides two shield plates made of foil-like conductive material, which have been conventionally used for countermeasures against radiation noise, and one of which is connected to the primary side stable potential section. , the other is connected to the secondary side stable potential section, and the two shield plates are installed so as to sandwich a plate or foil-like insulating material having a predetermined thickness.
作用
この構成により、１次側シールド板と２次側シールド板
は、等制約に平行板コンデンサの構造を有することばな
り、１次−２次側安定電位部分間には、１次−２次側シ
ールド板の対向面積をＳ。Effect With this configuration, the primary shield plate and the secondary shield plate have the structure of a parallel plate capacitor with equal constraints, and between the primary and secondary side stable potential parts, the primary and secondary side The opposing area of the shield plate is S.
絶縁材料の厚みをｄ、絶縁材料の導電率をεとすると、
ｓＳ／ｄの容量を有することにな）、コンデンサを用い
た場合と同様の雑音除去効果を得ることができる。If the thickness of the insulating material is d and the electrical conductivity of the insulating material is ε, then
sS/d), it is possible to obtain the same noise removal effect as when using a capacitor.
実施例
第１図は本発明の一実施例によるスイッチング電源の構
成図であり、第１図において、１１はフ、イルターブロ
ック、１２は１次整流平滑ブロック５１３はスイッチン
グ素子、１４は少なくとも１次巻線、２次巻線を有する
高周波絶縁トランス、１５は２次整流平滑ブロックであ
り、これらの機能、動作は第３図の従来例と同様である
。１６は１次側シールド板であり、その電位は１次整流
平滑後の基準電位に、１７は２次側シールド板で、その
電位は２次整流平滑後の基準電位に落としである。１８
は１次−２次側シールド板１８．１７の絶縁に挿入され
た絶縁材料であり、前記１次側シールド板１６と前記２
次側シールド板１７は１前記絶縁材料１８をはさみ込む
構造となっている。Embodiment FIG. 1 is a block diagram of a switching power supply according to an embodiment of the present invention. In FIG. A high frequency isolation transformer having a secondary winding and a secondary winding, and 15 a secondary rectifying and smoothing block, the functions and operations of which are the same as those of the conventional example shown in FIG. Reference numeral 16 denotes a primary side shield plate, the potential of which is lowered to the reference potential after primary rectification and smoothing, and 17 a secondary side shield plate, whose potential is lowered to the reference potential after secondary rectification and smoothing. 18
is an insulating material inserted into the insulation between the primary and secondary shield plates 18 and 17, and
The next shield plate 17 has a structure in which the insulating material 18 is sandwiched therebetween.
この構造により１前記１次側シールド板１６と前記２次
側シールド板１７は、絶縁材料１８を介して容量結合し
、輻射雑音対策という機能に加え、第３図の従来構成例
のコンデンサ１−２．１−４゜６、アの機能も兼ねるこ
とができる。With this structure, the primary side shield plate 16 and the secondary side shield plate 17 are capacitively coupled via the insulating material 18, and in addition to the function of radiation noise countermeasure, the capacitor 1 of the conventional configuration example shown in FIG. 2.1-4゜6, can also serve the function of a.
第２図は本発明の、高周波絶縁トランス１４に本発明の
シールド構造を有したものである。第２図において、１
６は１次側シールド板、１７は２次側シールド板、１８
は絶縁材料であり、これらの機能は前記実施例で述べた
通りである。１９はコア、２０は１次、２次巻線を施し
たボビン、２１は１次側シールド引出しリード線で、１
６は２次側シールド引出しリード線である。FIG. 2 shows a high frequency isolation transformer 14 according to the present invention having a shield structure according to the present invention. In Figure 2, 1
6 is the primary side shield plate, 17 is the secondary side shield plate, 18
are insulating materials, and their functions are as described in the previous embodiments. 19 is the core, 20 is the bobbin with the primary and secondary windings, 21 is the primary side shield lead wire, 1
6 is a secondary shield lead wire.
発明の効果
以上のように本発明によれば、１次、２次安定電位部分
両側に設けたシールド板とその間にはさみ込まれた絶縁
材料により、１次−２次間に容量結合を起こさせ、従来
の輻射雑音対策に加え、１次−２次間にコンデンサを接
続した場合と同様の雑音対策効果を得ることができる上
、部品点数削減、電源の小型が可能となり実用的にきわ
めて有用である。Effects of the Invention As described above, according to the present invention, capacitive coupling is caused between the primary and secondary by the shield plates provided on both sides of the primary and secondary stable potential parts and the insulating material sandwiched between them. In addition to the conventional radiation noise countermeasures, it is possible to obtain the same noise countermeasure effect as when connecting a capacitor between the primary and secondary, and it is also possible to reduce the number of parts and make the power supply smaller, making it extremely useful in practical terms. be.
第１図は本発明の一実施例によるスイッチング電源の構
成図、第２図は本発明の高周波絶縁トラ゛ンスの外観図
、第３図は従来のシールド構造を示す構成図である。
１１・・す・・フィルターブロック、１２・・・・・・
１次整流平滑ブロック、１３・・・・・・スイッチング
素子、１４・・・・・・高周波絶縁トランス、１６・・
・２次整流平滑ブロック、１６・・申・１次側シールド
板、１γ・・・・・・２次側シールド板、１８・・・・
・・絶縁材料、１９・・・・・・コア、２０・・・・・
・ボビン、２１・・・・・・１次側シールド引出しリー
ド線、２２・・・・・・２次側シールド引出しリード線
。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名第
１ 図
第２図
第３図FIG. 1 is a block diagram of a switching power supply according to an embodiment of the present invention, FIG. 2 is an external view of a high frequency insulating transformer of the present invention, and FIG. 3 is a block diagram showing a conventional shield structure. 11... Filter block, 12...
Primary rectifier smoothing block, 13... Switching element, 14... High frequency isolation transformer, 16...
・Secondary rectification smoothing block, 16...Primary side shield plate, 1γ...Secondary side shield plate, 18...
...Insulating material, 19...Core, 20...
・Bobbin, 21...Primary side shield drawer lead wire, 22...Secondary side shield drawer lead wire. Name of agent: Patent attorney Toshio Nakao and 1 other person
1 Figure 2 Figure 3
Claims (1)
よって、所定のデューティ比と周波数を有する高周波交
流電圧に変換し、少なくとも１次側巻線と２次側巻線を
有する高周波絶縁トランスによって負荷側に伝達し、再
び整流・平滑することにより、所定の直流出力電圧を得
るように構成され、１次側と２次側および１次側と大地
アース間が絶縁され、輻射雑音対策に用いる箔状導電材
料のシールド板を２枚設け、一方を１次側安定電位、他
方を２次側安定電位部に接続し、前記２枚のシールド板
を板又は箔状の絶縁材料をはさみ込むように設置したス
イッチング電源。AC voltage is received, rectified, converted into a high frequency AC voltage having a predetermined duty ratio and frequency by a switching element, and then connected to the load side by a high frequency isolation transformer having at least a primary winding and a secondary winding. It is configured to obtain a predetermined DC output voltage by rectifying and smoothing it again.The primary side and the secondary side and between the primary side and the earth are insulated. Two shield plates made of conductive material are provided, one is connected to the primary side stable potential and the other is connected to the secondary side stable potential part, and the two shield plates are installed so that a plate or foil-like insulating material is sandwiched between them. Switching power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16405086A JPH0767275B2 (en) | 1986-07-11 | 1986-07-11 | Switching power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16405086A JPH0767275B2 (en) | 1986-07-11 | 1986-07-11 | Switching power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6318964A true JPS6318964A (en) | 1988-01-26 |
| JPH0767275B2 JPH0767275B2 (en) | 1995-07-19 |
Family
ID=15785842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16405086A Expired - Lifetime JPH0767275B2 (en) | 1986-07-11 | 1986-07-11 | Switching power supply |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0767275B2 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5546065A (en) * | 1991-09-13 | 1996-08-13 | Vlt Corporation | High frequency circuit having a transformer with controlled interwinding coupling and controlled leakage inductances |
| JPH08234001A (en) * | 1995-02-24 | 1996-09-13 | Asahi Glass Co Ltd | Antireflection optical article |
| US6143157A (en) * | 1995-11-27 | 2000-11-07 | Vlt Corporation | Plating permeable cores |
| US6960387B2 (en) | 2001-06-25 | 2005-11-01 | Asahi Glass Company, Limited | Optical film |
| US7060771B2 (en) | 2000-12-28 | 2006-06-13 | Central Glass Company, Limited | Transparent fluorine-containing copolymer |
| US7071602B2 (en) | 2001-04-27 | 2006-07-04 | Asahi Glass Company, Limited | Filter for plasma display panel |
| US7453620B2 (en) | 2003-09-03 | 2008-11-18 | Asahi Glass Company, Limited | Spatial optical modulation element and spatial optical modulation method |
| US8017709B2 (en) | 2006-01-05 | 2011-09-13 | Asahi Glass Company, Limited | Fluorinated polymer and fluorinated polymer composition containing it |
| US8029871B2 (en) | 2005-06-09 | 2011-10-04 | Hoya Corporation | Method for producing silica aerogel coating |
| US8298622B2 (en) | 2005-04-22 | 2012-10-30 | Pentax Ricoh Imaging Company, Ltd. | Silica aerogel coating and its production method |
-
1986
- 1986-07-11 JP JP16405086A patent/JPH0767275B2/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5719544A (en) * | 1991-09-13 | 1998-02-17 | Vlt Corporation | Transformer with controlled interwinding coupling and controlled leakage inducances and circuit using such transformer |
| US6653924B2 (en) | 1991-09-13 | 2003-11-25 | Vlt Corporation | Transformer with controlled interwinding coupling and controlled leakage inductances and circuit using such transformer |
| US5546065A (en) * | 1991-09-13 | 1996-08-13 | Vlt Corporation | High frequency circuit having a transformer with controlled interwinding coupling and controlled leakage inductances |
| JPH08234001A (en) * | 1995-02-24 | 1996-09-13 | Asahi Glass Co Ltd | Antireflection optical article |
| US6143157A (en) * | 1995-11-27 | 2000-11-07 | Vlt Corporation | Plating permeable cores |
| US6165340A (en) * | 1995-11-27 | 2000-12-26 | Vlt Corporation | Plating permeable cores |
| US7417100B2 (en) | 2000-12-28 | 2008-08-26 | Central Glass Company, Limited | Transparent fluorine-containing copolymer |
| US7060771B2 (en) | 2000-12-28 | 2006-06-13 | Central Glass Company, Limited | Transparent fluorine-containing copolymer |
| US7071602B2 (en) | 2001-04-27 | 2006-07-04 | Asahi Glass Company, Limited | Filter for plasma display panel |
| US6960387B2 (en) | 2001-06-25 | 2005-11-01 | Asahi Glass Company, Limited | Optical film |
| US7153568B2 (en) | 2001-06-25 | 2006-12-26 | Asahi Glass Company, Limited | Optical film |
| US7453620B2 (en) | 2003-09-03 | 2008-11-18 | Asahi Glass Company, Limited | Spatial optical modulation element and spatial optical modulation method |
| US8298622B2 (en) | 2005-04-22 | 2012-10-30 | Pentax Ricoh Imaging Company, Ltd. | Silica aerogel coating and its production method |
| US8029871B2 (en) | 2005-06-09 | 2011-10-04 | Hoya Corporation | Method for producing silica aerogel coating |
| US8017709B2 (en) | 2006-01-05 | 2011-09-13 | Asahi Glass Company, Limited | Fluorinated polymer and fluorinated polymer composition containing it |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0767275B2 (en) | 1995-07-19 |
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