JPH02170407A - Through-type capacitor and magnetron - Google Patents
Through-type capacitor and magnetronInfo
- Publication number
- JPH02170407A JPH02170407A JP32460788A JP32460788A JPH02170407A JP H02170407 A JPH02170407 A JP H02170407A JP 32460788 A JP32460788 A JP 32460788A JP 32460788 A JP32460788 A JP 32460788A JP H02170407 A JPH02170407 A JP H02170407A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- magnetron
- conductor
- insulator
- conductive plate
- 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
- 239000003990 capacitor Substances 0.000 title claims abstract description 28
- 239000004020 conductor Substances 0.000 claims abstract description 22
- 239000012212 insulator Substances 0.000 claims abstract description 19
- 230000010355 oscillation Effects 0.000 claims abstract description 14
- 230000000694 effects Effects 0.000 abstract description 4
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920002379 silicone rubber Polymers 0.000 description 3
- 239000004945 silicone rubber Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- -1 polybutylene terephthalate Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
Landscapes
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
Description
【発明の詳細な説明】
（イ） 産業上の利用分野
本発明はマグネトロン及びマグネトロン等に使用される
貫通形コンデンサの改良に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to improvements in magnetrons and feedthrough capacitors used in magnetrons and the like.
（ロ）従来の技術
一般に電子レンジ等に１吏用されるマグネトロンにおい
ては、例えば実公昭５８−２３１６８号公報（ＨＯＩＪ
２３／１４）に示されるものが知られている。(b) Prior Art Regarding magnetrons generally used in microwave ovens, etc., for example, there is
23/14) is known.
このマグネトロンを第３図及び第４図に基づき説明する
と、陰極ステム（１）の陰極端子（２）には、インダク
タ（３）を介して貫通形コンデンサ（４）を接続し、陰
極ステム（１）とインダクタ（３）をシールドケース（
５）にて包囲すると共に貫通形コンデンサ（４）がシー
ルドケース（５）に貫通支持されている。To explain this magnetron based on FIGS. 3 and 4, a feedthrough capacitor (4) is connected to the cathode terminal (2) of the cathode stem (1) via an inductor (3), and the cathode stem (1) ) and inductor (3) in a shielding case (
5), and a feedthrough capacitor (4) is supported through the shield case (5).
次に前述した貫通形コンデンサ（４）の構造を第５図に
基づき説明すると、（６）は両端面に第１電極（７）及
び第２電極（８）を配設した筒状誘電体、（９）は誘電
体（６）を貫通し、第１電極（７）に導電板（１０）を
介して接続される貫通導体で、一端がインダクタ（３）
に接続され、他端がシールドケース（５）外方へ突出し
ている。（１１）は第２電極（８）に接続される接地電
極で、シールドケース（５）にネジ等により固着されて
いる。（１２）は貫通導体（９）のシールドケース（５
）内方側に挿入されるシリコーン製のチューブ、（１３
）は接地電極（１１）のシールドケース（５）外側に一
端が固着されたポリブチレンテレフタレート樹脂（以下
ＰＢＴｖ１４脂と称す）製の絶縁スリーブ、（１４）は
接地電極（１１）のシールドケース（５）内側に一端が
固着されたＰＢＴ樹脂製の絶縁スリーブで、両絶縁スリ
ーブ（１３）（１４）内にはエポキシ樹脂を充填して絶
縁体（１５）（１６）を形成している。Next, the structure of the above-mentioned feedthrough capacitor (4) will be explained based on FIG. (9) is a through conductor that passes through the dielectric (6) and is connected to the first electrode (7) via a conductive plate (10), and one end is connected to the inductor (3).
The other end protrudes outward from the shield case (5). A ground electrode (11) is connected to the second electrode (8) and is fixed to the shield case (5) with screws or the like. (12) is the shield case (5) of the through conductor (9).
) Silicone tube inserted inward, (13
) is an insulating sleeve made of polybutylene terephthalate resin (hereinafter referred to as PBTv14 resin) with one end fixed to the outside of the shield case (5) of the ground electrode (11), and (14) is the shield case (5) of the ground electrode (11). ) An insulating sleeve made of PBT resin with one end fixed on the inside, and both insulating sleeves (13) and (14) are filled with epoxy resin to form insulators (15) and (16).
しかしながら、貫通形コンデンサ（４）は低周波帯の不
要電波の漏洩は抑制できるが、高周波帯の不要電波、例
えば高調波は電気的開口部、即ち。However, although the feedthrough capacitor (4) can suppress the leakage of unnecessary radio waves in the low frequency band, unnecessary radio waves in the high frequency band, such as harmonics, are leaked through the electrical opening.
貫通導体（９）及び貫通導体を貫通させるための接地電
極（１１１の孔から漏洩してしまいほとんど漏洩を抑制
することができなかった。Leakage occurred from the hole in the through conductor (9) and the ground electrode (111) for penetrating the through conductor, and leakage could hardly be suppressed.
マグネトロンにおいては、その基本発振周波数の第５高
調波は、最近実用化が進められている衛星放送の周波数
と一部重なることから、第５高調波の漏洩により電波障
害が生じる等の実害が懸念されている。In magnetrons, the 5th harmonic of the fundamental oscillation frequency partially overlaps with the frequency of satellite broadcasting, which has recently been put into practical use, so there is concern that leakage of the 5th harmonic may cause actual damage such as radio interference. has been done.
（ハ） 発明が解決しようとする課題
本発明は上記欠点に鑑みなされたもので、高周波帯の不
要電波の漏洩を抑制できる貫通形コンデンサ及び高調波
の漏洩を抑制できるマグネトロンを提供することを課題
とする。(c) Problems to be Solved by the Invention The present invention has been made in view of the above drawbacks, and an object thereof is to provide a feedthrough capacitor that can suppress leakage of unnecessary radio waves in a high frequency band and a magnetron that can suppress leakage of harmonics. shall be.
（ニ） 課題を解決するための手段
本発明の貫通形コンデンサは、導電板と接地電極の少な
くとも一方に、約λ／４（ｒＴの長さを有するチョーク
構体を貫通導体と同軸に形成し、チョーク構体を絶縁体
で被覆したことを′ｌ！徴とする。尚、λは貫通形コン
デンサが接続された高周波発生源から発生する任意の高
調波の波長、ε「は絶縁体の比誘電率である。(d) Means for Solving the Problems The feedthrough capacitor of the present invention includes a choke structure having a length of about λ/4 (rT) formed coaxially with the feedthrough conductor on at least one of the conductive plate and the ground electrode, The fact that the choke structure is covered with an insulator is defined as 'l!'. In addition, λ is the wavelength of any harmonic generated from the high frequency source to which the feedthrough capacitor is connected, and ε is the dielectric constant of the insulator. It is.
また、本発明のマグネトロンの貫通形コンデンサは、導
電板と接地電極の少なくとも一方に、約λ／４Ｆ７の長
さを有するチョーク構体を貫通導体と同軸に形成し、チ
ョーク構体を絶縁体で被覆したことを特徴とする。尚、
λはマグネトロンの基本発振周波数の任意の高調波の波
長、εｒは絶縁体の比誘電率である。Further, the magnetron feedthrough capacitor of the present invention has a choke structure having a length of about λ/4F7 formed coaxially with the feedthrough conductor on at least one of the conductive plate and the ground electrode, and the choke structure is covered with an insulator. It is characterized by still,
λ is the wavelength of an arbitrary harmonic of the fundamental oscillation frequency of the magnetron, and εr is the dielectric constant of the insulator.
（ホ）作用
本発明の貫通形コンデンサにおいては、貫通形コンデン
サの電気的開口部、即ち、貫通導体及び接地電極の孔を
通して漏洩する高調波は、チョーク構体により反射され
、外部への漏洩が抑制される。(E) Function In the feedthrough capacitor of the present invention, harmonics leaking through the electrical openings of the feedthrough capacitor, that is, through the holes in the feedthrough conductor and the ground electrode, are reflected by the choke structure, and leakage to the outside is suppressed. be done.
また１本発明のマグネトロンにおいては、貫通形コンデ
ンサの電気的開口部を通して漏洩する基本発振周波数の
高調波は、チョーク構体により反射され、外部への漏洩
が抑制される。Furthermore, in the magnetron of the present invention, harmonics of the fundamental oscillation frequency leaking through the electrical opening of the feedthrough capacitor are reflected by the choke structure, thereby suppressing leakage to the outside.
（へ）実施例
本発明の一実施例を第１図に基づき以下に詳述する。尚
、従来例と同一部品は同一符号を付して説明を省略する
。(F) Embodiment An embodiment of the present invention will be described below in detail with reference to FIG. Incidentally, parts that are the same as those in the conventional example are given the same reference numerals, and explanations thereof will be omitted.
（１７）は第１電極（７）と貫通導体（９ンとを接続す
る電極金具で、貫通導体（９）を同軸状にとりまく円筒
状の第１チヨーク楕体（１８）を有しており、この第１
チヨーク楕体（１８）の長さ１１は、絶縁スリーブ（１
２）と絶縁体（１６）の合成比誘電率をεｒとすると、
マグネトロンの発振波の任意の高調波、例え寸法に形成
されている。(17) is an electrode fitting that connects the first electrode (7) and the through conductor (9), and has a cylindrical first chain ellipse (18) coaxially surrounding the through conductor (9). , this first
The length 11 of the chiyoke ellipse (18) is equal to the length 11 of the insulating sleeve (1
2) and the insulator (16) as εr,
Arbitrary harmonics of the magnetron's oscillation wave, even the dimensions are formed.
（１９）は第２電極（８）に接続される接地型ｆ！ｆで
、貫通導体（９）を同軸状にとりまく円筒状の第２チヨ
ーク楕体（２０）を有しており、絶縁スリーブ（１２）
と絶縁体（１６）の合成比誘電率をεｒとすると、第２
チヨーク楕体（２０）の長さ１２は、マグネトロンの発
振波の任意の高調波、例えば第２高調波ている。(19) is a grounded type f! connected to the second electrode (8). At f, it has a cylindrical second yoke ellipse (20) that coaxially surrounds the through conductor (9), and has an insulating sleeve (12).
Letting the composite dielectric constant of the insulator (16) and the insulator (16) be εr, the second
The length 12 of the Chiyoke ellipse (20) corresponds to an arbitrary harmonic of the oscillation wave of the magnetron, for example, the second harmonic.
尚、絶縁スリーブ（１２）に使用したＰＢＴＶ１４脂の
比誘電率は約４〜５、絶縁体（１５） （＋６１に使用
されたエポキシ樹脂の比誘電率は約３で、絶縁スリーブ
（１２）と絶縁体（Ｈ７１との合成比誘電率εｒは約４
となる。The dielectric constant of the PBTV14 resin used for the insulating sleeve (12) is about 4 to 5, and the dielectric constant of the epoxy resin used for the insulator (15) (+61) is about 3. The composite dielectric constant εr with the insulator (H71 is approximately 4
becomes.
斯る貫通形コンデンサを有する本発明のマグネトロンは
、貫通形コンデンサの第１、第２チヨーク楕体（１８）
（２０＞によって、マグネトロンの発振波の高調波の
うち、第２高調波及び第５高調波が電源側へ伝送される
のが抑制される。勿論第１、第２チヨーク楕体（１８１
（２０）は電源波に対して阻止作用をもたないので、電
源波の伝送効率を低下させることはない。The magnetron of the present invention having such a feedthrough capacitor has the first and second elliptical bodies (18) of the feedthrough capacitor.
(20> suppresses the transmission of the second harmonic and the fifth harmonic to the power supply side among the harmonics of the magnetron's oscillation wave.Of course, the first and second
Since (20) has no blocking effect on power waves, it does not reduce the transmission efficiency of power waves.
次に本発明の他の実施例を第２図に基づき詳述（２１）
は両端面に第１電極と第２電極（２３）を配設へ
したセラミック製の筒状誘電体、（２４）は前記誘電体
（２１）を貫通する導電性の良好な金属製、例えへ銅製
の貫通導体で、導電板（２５）を介して前記第１電ｆ！
（２２１に接続している。前記導電板（２５）は貫通導
体（２４）を同軸状にとりまく円筒状の第３チョーク槽
体（２６）を有しており、この第３チヨーク楕体（２６
）の長さす、は、後述する梓縁体（３０）の比誘電率を
εｒ゛とすると、このマグネトロンの発振波の任意の高
調波、例えば第５高調波に対して約（２７）は前記第２
電極（２３）に接続される接地電極で、前記貫通導体（
２４）を同軸状にとりまく円筒状の第１１チヨーク楕体
（２８）を有しており、後述する絶縁状（３０）の比誘
電率をεｒ゛とすると、この第４チヨーク構体（２８）
の長さ＃４は、このマグネトロンの発振波の任意の高調
波、例えば第２高調波に対いる。Next, another embodiment of the present invention will be described in detail based on FIG. 2 (21).
(24) is a cylindrical dielectric made of ceramic with a first electrode and a second electrode (23) arranged on both end faces, and (24) is made of metal with good conductivity that penetrates the dielectric (21). A through conductor made of copper connects the first electric current f! through a conductive plate (25).
(Connected to 221. The conductive plate (25) has a cylindrical third choke tank (26) coaxially surrounding the through conductor (24), and this third choke ellipse (26).
) is approximately (27) for any harmonic of the oscillation wave of this magnetron, for example, the 5th harmonic, assuming that the dielectric constant of the azure edge body (30) to be described later is εr゛. Second
A ground electrode connected to the electrode (23), which is connected to the through conductor (
It has a cylindrical eleventh chain ellipse (28) that coaxially surrounds the fourth chain structure (24), and if the dielectric constant of the insulating body (30) described later is εr, then this fourth chain structure (28)
The length #4 corresponds to an arbitrary harmonic of the oscillation wave of this magnetron, for example, the second harmonic.
（２９） ＋３０１は前記誘電体（２１）、貫通導体（
２４）及び接地電極（２７）を被覆する絶縁体で、シン
コーンゴム組成物に接着成分を添加した自己接着性シリ
コーンゴム、例えば東芝シリコン（株）製自己接着性シ
リコーンゴムＴＳＥ３３３１を使用している。前記絶縁
体（２９） ＋３０１に使用した自己接着性シリコーン
ゴムの比誘電率εｒ′は約３である。(29) +301 is the dielectric (21), the through conductor (
24) and the ground electrode (27), a self-adhesive silicone rubber obtained by adding an adhesive component to a thin cone rubber composition, such as self-adhesive silicone rubber TSE3331 manufactured by Toshiba Silicon Co., Ltd., is used. The relative dielectric constant εr' of the self-adhesive silicone rubber used for the insulator (29) +301 is about 3.
この実施例においてら、前述した実施例と同様に貫通形
コンデンサの第３、第４チヨーク楕体（２６） （２８
）によって、マグネトロンの基本発振周波数の第２高調
波及び第５高調波の漏洩を抑制することができる。In this embodiment, the third and fourth elliptical bodies (26) (28
), it is possible to suppress leakage of the second and fifth harmonics of the fundamental oscillation frequency of the magnetron.
尚、前述した２つの実施例には、いずれも夫々導電板（
１７） （２５）に第１、第３チヨーク楕体（１８）
（２６）を、また接地電極（１９） （２７１に第２、
第４チヨーク楕体（２０１（２８）を設けたが、これら
のチョーク槽体は導電板と接地電極の少なくとも一方に
設ければよく、また、チョーク槽体ｆ１８１ （２０）
（２６） （２８）は第２、第５高調波以外の任意の
高調波を抑制する（λは任意の高調波の周波数を示す）
。Incidentally, each of the two embodiments described above includes a conductive plate (
17) First and third Chiyoke ellipses in (25) (18)
(26), and a second ground electrode (19) (271),
Although the fourth choke tank body (201 (28)) is provided, these choke tank bodies may be provided on at least one of the conductive plate and the ground electrode.
(26) (28) suppresses any harmonics other than the 2nd and 5th harmonics (λ indicates the frequency of any harmonic)
.
更に、前述した２つの実施例は、いずれもマグネトロン
であるため、第１乃至第４チョーク槽体（１８） （２
０） （２６１（２８＋はマグネトロンの基本発振周波
波以外の池の高周波雑音を抑制する場合には人を他の高
周波雑音の周波数に合わせた寸法に形成すればよい。Furthermore, since both of the above-mentioned two embodiments are magnetrons, the first to fourth choke tank bodies (18) (2
0) (261 (28+) When suppressing high frequency noise other than the fundamental oscillation frequency wave of the magnetron, the size of the person may be formed to match the frequency of the other high frequency noise.
（ト） 発明の効果
本発明は上述のとおり構成されているので、次に記載す
る効果を奏する。(G) Effects of the Invention Since the present invention is configured as described above, it produces the following effects.
請求項１の貫通形コンデンサにおいては、高調波の漏洩
を抑制することができる。In the feedthrough capacitor according to the first aspect, leakage of harmonics can be suppressed.
また、請求項２のマグネトロンにおいては、マグネトロ
ンの基本発振周波数の高調波の漏洩を抑制でき、他の機
器への高調波による影響を減少することができる等の効
果を奏する。Further, in the magnetron according to the second aspect, leakage of harmonics of the fundamental oscillation frequency of the magnetron can be suppressed, and effects of harmonics on other devices can be reduced.
第１図は本発明一実施例の貫通形コンデンサの縦断面図
、第２図は他の実施例の貫通形コンデンサの縦断面図、
第３図は一般的なマグネトロンの要部横断面図、第４図
は同要部縦断面図、第５図は従来の貫通形コンデンサの
縦断面図である。
（１）・・・陰極ステム、（２）・・・陰極端子、（３
）・・・インダクタ、（４）・・・貫通形コンデンサ、
（５）・・・シールドケース、（６）（２，１１・・・
筒状誘電体、（７） （２２）・・・第１電極、（８）
＜２３＋・・・第２電極、（１５１（１６１（２９）
（３０）・・・絶縁体、（１７） （２５）・・・導
電板、 （１９）（２７）・・・接地電極、（＋８）
（２０） （２６） （２８）・・・チョーク構体。FIG. 1 is a vertical cross-sectional view of a feed-through capacitor according to one embodiment of the present invention, FIG. 2 is a vertical cross-sectional view of a feed-through capacitor according to another embodiment,
FIG. 3 is a cross-sectional view of the main part of a general magnetron, FIG. 4 is a vertical cross-sectional view of the main part, and FIG. 5 is a vertical cross-sectional view of a conventional feedthrough capacitor. (1)...Cathode stem, (2)...Cathode terminal, (3
)...Inductor, (4)...Feedthrough capacitor,
(5)...Shield case, (6)(2,11...
Cylindrical dielectric, (7) (22)...first electrode, (8)
<23+...second electrode, (151(161(29)
(30)... Insulator, (17) (25)... Conductive plate, (19) (27)... Ground electrode, (+8)
(20) (26) (28)...Choke structure.
Claims (2)
電体と、該誘電体を貫通し、前記第１電極に導電板を介
して接続される貫通導体と、前記第２電極に接続される
接地電極と、前記誘電体、導電板、貫通導体及び接地電
極を被覆する絶縁体とを備え、前記導電板と接地電極の
少なくとも一方に、約λ／４√（εｒ）（λ：貫通形コ
ンデンサが接続された高周波発生源から発生する任意の
高調波の波長、εｒ：絶縁体の比誘導率）の長さを有す
るチョーク構成を前記貫通導体と同軸的に形成し、該チ
ョーク構体を前記絶縁体で被覆したことを特徴とする貫
通形コンデンサ。(1) A cylindrical dielectric body with a first electrode and a second electrode arranged on both end faces, a through conductor that penetrates the dielectric body and is connected to the first electrode via a conductive plate, and the second A ground electrode connected to the electrode, and an insulator covering the dielectric, the conductive plate, the through conductor, and the ground electrode, and at least one of the conductive plate and the ground electrode has approximately λ/4√(εr)( A choke configuration having a length (λ: wavelength of an arbitrary harmonic generated from a high frequency generation source to which the feedthrough capacitor is connected, εr: specific inductivity of the insulator) is formed coaxially with the feedthrough conductor, and A feed-through capacitor characterized in that a choke structure is covered with the insulator.
通形コンデンサを接続し、前記陰極ステム及びインダク
タをシールドケースにて覆うと共に前記貫通形コンデン
サをシールドケースに貫通支持してなるマグネトロンに
おいて、前記貫通形コンデンサは、両端面に第１電極及
び第２電極を配設した筒状誘導体と、前記誘導体を貫通
し、第１電極に導電板を介して接続されると共に前記イ
ンダクタに一端を接続する貫通導体と、前記第２電極に
接続され、前記シールドケースに接続される接地電極と
、前記誘電体、導電板、貫通導体及び接地電極を被覆す
る絶縁体とを備え、前記導電板と接地電極の少なくとも
一方に、約λ／４√（εｒ）（λ：基本発振周波数の任
意の高調波の波長、εｒ：絶縁体の比誘電率）の長さを
有するチョーク構体を前記貫通導体と同軸的に形成し、
該チョーク構体を前記絶縁体で被覆したことを特徴とす
るマグネトロン。(2) In the magnetron, a feedthrough capacitor is connected to the cathode terminal of the cathode stem via an inductor, the cathode stem and the inductor are covered with a shield case, and the feedthrough capacitor is supported through the shield case. A feedthrough capacitor includes a cylindrical dielectric body with a first electrode and a second electrode arranged on both end faces, and a cylindrical dielectric body that penetrates the dielectric body and is connected to the first electrode via a conductive plate, and one end is connected to the inductor. A through conductor, a ground electrode connected to the second electrode and connected to the shield case, and an insulator covering the dielectric, the conductive plate, the through conductor, and the ground electrode, the conductive plate and the ground electrode. A choke structure having a length of about λ/4√(εr) (λ: wavelength of an arbitrary harmonic of the fundamental oscillation frequency, εr: relative dielectric constant of the insulator) is coaxially connected to the through-hole conductor. formed into
A magnetron characterized in that the choke structure is covered with the insulator.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32460788A JPH02170407A (en) | 1988-12-22 | 1988-12-22 | Through-type capacitor and magnetron |
| US07/409,474 US4985802A (en) | 1988-09-20 | 1989-09-19 | High voltage through type capacitor and manufacturing method therefor |
| KR1019890013435A KR900005504A (en) | 1988-09-20 | 1989-09-19 | High pressure through-type condenser and its manufacturing method |
| CA000611985A CA1307330C (en) | 1988-09-20 | 1989-09-19 | High voltage through type capacitor and manufacturing method therefor |
| EP89117421A EP0364755A3 (en) | 1988-09-20 | 1989-09-20 | High voltage through type capacitor and manufacturing method therefor |
| BR898904718A BR8904718A (en) | 1988-09-20 | 1989-09-20 | HIGH VOLTAGE CAPACITOR AND MANUFACTURING METHOD TO PRODUCE IT |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32460788A JPH02170407A (en) | 1988-12-22 | 1988-12-22 | Through-type capacitor and magnetron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02170407A true JPH02170407A (en) | 1990-07-02 |
Family
ID=18167707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32460788A Pending JPH02170407A (en) | 1988-09-20 | 1988-12-22 | Through-type capacitor and magnetron |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02170407A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4947005U (en) * | 1972-07-31 | 1974-04-24 | ||
| JPS6366914A (en) * | 1986-09-08 | 1988-03-25 | 株式会社日立製作所 | Magnetron filter |
-
1988
- 1988-12-22 JP JP32460788A patent/JPH02170407A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4947005U (en) * | 1972-07-31 | 1974-04-24 | ||
| JPS6366914A (en) * | 1986-09-08 | 1988-03-25 | 株式会社日立製作所 | Magnetron filter |
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