JPS63114104A - Manufacture of nonlinear resistor - Google Patents
Manufacture of nonlinear resistorInfo
- Publication number
- JPS63114104A JPS63114104A JP61258111A JP25811186A JPS63114104A JP S63114104 A JPS63114104 A JP S63114104A JP 61258111 A JP61258111 A JP 61258111A JP 25811186 A JP25811186 A JP 25811186A JP S63114104 A JPS63114104 A JP S63114104A
- Authority
- JP
- Japan
- Prior art keywords
- resistance layer
- resistance
- oxide
- nonlinear resistor
- element body
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 239000011248 coating agent Substances 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 11
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 4
- 239000011787 zinc oxide Substances 0.000 claims description 4
- 239000000654 additive Substances 0.000 claims description 2
- 238000005245 sintering Methods 0.000 claims description 2
- 230000000996 additive effect Effects 0.000 claims 1
- 239000000463 material Substances 0.000 description 6
- 239000000843 powder Substances 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- 230000002950 deficient Effects 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910000410 antimony oxide Inorganic materials 0.000 description 2
- 229910000416 bismuth oxide Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- -1 as ) Inorganic materials 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 229910000428 cobalt oxide Inorganic materials 0.000 description 1
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910000480 nickel oxide Inorganic materials 0.000 description 1
- 150000003891 oxalate salts Chemical class 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
- SOLUNJPVPZJLOM-UHFFFAOYSA-N trizinc;distiborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-][Sb]([O-])([O-])=O.[O-][Sb]([O-])([O-])=O SOLUNJPVPZJLOM-UHFFFAOYSA-N 0.000 description 1
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は、電気系統における過電圧保護装置に使用され
る焼結体自体が電圧非直線性をもつ非直線抵抗体の製造
方法に関する。[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to the production of a nonlinear resistor whose sintered body itself has voltage nonlinearity and is used in an overvoltage protection device in an electrical system. Regarding the method.
（従来の技術）
電気系統において、正常な電圧に重畳される過電圧を除
去し、電気系統や電気機器を保護するため、サージアブ
ソーバ及び避雷器などの過電圧保護装置が用いられる。(Prior Art) In electrical systems, overvoltage protection devices such as surge absorbers and lightning arresters are used to remove overvoltages superimposed on normal voltages and protect electrical systems and electrical equipment.
この過電圧保護装置には、正常な電圧ではほぼ絶縁特性
を示し、過電圧が印加されたときには比較的抵抗抗値に
なる非直線抵抗体が用いられる。This overvoltage protection device uses a nonlinear resistor that exhibits almost insulating properties at normal voltage and has a relatively high resistance value when overvoltage is applied.
非直線抵抗体は酸化亜鉛（ＺｎＯ）に金属酸化物を混合
した素子をプレスして成形し、焼成して造られる。A non-linear resistor is manufactured by pressing an element made of zinc oxide (ZnO) mixed with a metal oxide, molding it, and firing it.
ＺｎＯ系の非直線抵抗体は、小電流域における非直線特
性が急峻で、かつ大電流域に至るまで鋭い立ち上りをも
つため、従来使用されていたＳｉＣ系の非直線抵抗体を
用いた過電圧保護装置よりもすぐれた過電圧保護装置を
造ることができる。ZnO-based nonlinear resistors have steep nonlinear characteristics in small current ranges and sharp rises up to large current ranges, so overvoltage protection using conventionally used SiC-based nonlinear resistors is not possible. It is possible to build a better overvoltage protection device than the device.
このＺｎＯ系非直線抵抗体は、高湿状態において使用す
ると、非直線抵抗体側面の抵抗値が減少する。すなわち
、非直線指数αが著しく損われるという問題があり、従
来は非直線抵抗体の側面にアンチモン酸亜鉛（Ｚｎ、
５ｂ２ｏ１２）を生成分とする高抵抗層を設けることに
より、耐湿性の向上だけでなく、沿面せん終の防止をも
図っていた。When this ZnO-based nonlinear resistor is used in a high humidity condition, the resistance value of the side surface of the nonlinear resistor decreases. In other words, there is a problem that the nonlinear index α is significantly impaired, and conventionally, zinc antimonate (Zn,
By providing a high-resistance layer containing 5b2o12) as a product, not only the moisture resistance was improved, but also the creepage failure was prevented.
従来の非直線抵抗体は、例えば特開昭５９−１７２２０
１号公報に示されているように、側面に高抵抗層を形成
する方法として、仮焼結後の素体側面に一定の割合で酸
化アンチモン（Ｓｂ、０１）を塗布し。Conventional non-linear resistors are disclosed in, for example, Japanese Patent Application Laid-Open No. 59-17220.
As shown in Publication No. 1, as a method of forming a high resistance layer on the side surface, antimony oxide (Sb, 01) is applied at a constant ratio to the side surface of the element body after preliminary sintering.
焼結して高抵抗層を形成していた。It was sintered to form a high-resistance layer.
（発明が解決しようとする問題点）
しかし、従来のＺｎ７ＳｂｓＯｕ＊やＺｎ、ＳｉＯ，を
主成分とする高抵抗層を設けた非直線抵抗体は大電流パ
ルスの印加時の抵抗の変化率が大きいという欠点があり
、鉄（Ｆｅ）を主成分とする高抵抗層が用いられるよう
になってきた。（特開昭６０−２０６００２参照）この
場合、鉄を主成分とする高抵抗層形成物質の塗布量も放
電耐量特性やもれ電流や静電容量などの特性上のバラツ
キの関係から規定する必要があることがわかった。(Problem to be solved by the invention) However, the conventional non-linear resistor provided with a high-resistance layer mainly composed of Zn7SbsOu*, Zn, or SiO has a large rate of change in resistance when a large current pulse is applied. Due to this drawback, high resistance layers containing iron (Fe) as a main component have come to be used. (Refer to Japanese Patent Application Laid-Open No. 60-206002.) In this case, the coating amount of the high-resistance layer-forming material containing iron as the main component must also be specified in relation to variations in characteristics such as discharge withstand characteristics, leakage current, and capacitance. It turns out that there is.
本発明は上記の点を考慮してなされたもので、その目的
とするところは、優れた耐湿特性、耐パルス特性を損な
わないでしかも放電耐量特性を向上させ、もれ電流や静
電容量などの特性上のバラツキを改善した非直線抵抗体
の製造方法を提供することにある。The present invention has been made in consideration of the above points, and its purpose is to improve discharge withstand characteristics without impairing excellent moisture resistance characteristics and pulse resistance characteristics, and to improve leakage current and capacitance. An object of the present invention is to provide a method for manufacturing a nonlinear resistor that improves variations in characteristics.
（問題点を解決するための手段と作用）かかる目的を達
成するため、酸化亜鉛を主体とする成形体素体あるいは
予め成形体を仮焼した素体の側面に前記素体側面１ｃｍ
２当り５ないし２０ｍｇの鉄を主成分とする高抵抗層形
成物質を塗布した後、焼結して、焼結体の側面に高抵抗
層を形成することを特徴とする。(Means and operations for solving the problem) In order to achieve the above object, a molded body mainly composed of zinc oxide or a body formed by calcining a molded body in advance is coated with a 1 cm side surface of the body.
A high-resistance layer-forming material containing iron as a main component in an amount of 5 to 20 mg/2 is coated and then sintered to form a high-resistance layer on the side surface of the sintered body.
鉄を主成分とする高抵抗層形成物質を用いることにより
耐湿特性及び耐パルス性を向上させ、その塗布量を素体
側面１ｃｍ２当り５ｍｇ以上にすることにより放電耐量
特性が向上し、２０ＩＩ１ｇ以下にすることによりもれ
電流や静電容量などの特性のバラツキが少なくなる非直
線抵抗体が得られる。Moisture resistance and pulse resistance are improved by using a high-resistance layer-forming substance containing iron as the main component, and by increasing the coating amount to 5 mg or more per 1 cm2 of the side surface of the element body, discharge withstand characteristics are improved, and it becomes 20 II 1 g or less. By doing so, a non-linear resistor with less variation in characteristics such as leakage current and capacitance can be obtained.
（実施例）
以下１本発明の一実施例を第１図及び第２図を参照して
説明する。まず、酸化亜鉛（ＺｎＯ）の粉末に、酸化ビ
スマス（Ｂｉ、 ａｓ ）、酸化コバルト（Ｃｏｇ Ｏ
，）、酸化マンガン（ＭｎＯ）、酸化クロム（ＣｒｚＯ
ｉ）を各々０．５モル％、酸化アンチモン（Ｓｂ、Ｏａ
）、酸化ニッケル（Ｎｉｐ）の粉末を夫々１．０モル％
の範囲で添加し。(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. First, zinc oxide (ZnO) powder, bismuth oxide (Bi, as ), cobalt oxide (Cog O
), manganese oxide (MnO), chromium oxide (CrzO)
i), 0.5 mol% each, antimony oxide (Sb, Oa
) and 1.0 mol% of nickel oxide (Nip) powder, respectively.
Add within the range of.
これらの原料粉末を十分に混合するために水、分散剤、
バインダー、１ｌＩｌ！滑剤と共に混合装置に入れて混
合した。この混合物スラリーを、スプレードライヤーで
例えば平均粒径１２０ミクロンになるように造粒し、こ
の粉末をプレスにかけ直径５０ｅｍ厚さ３０ｍｍの円板
に成形した。添加した分散材、バインダー、潤滑剤を予
め除くため空気中で５００℃で焼成後、 １０２０℃で
仮焼した素体に予め用意した高抵抗層形成物質のスラリ
ーをスプレーガンを用いて塗布した。Water, dispersant,
Binder, 1lIl! It was mixed together with a lubricant in a mixing device. This mixture slurry was granulated using a spray dryer to, for example, have an average particle size of 120 microns, and the powder was pressed into a disk having a diameter of 50 em and a thickness of 30 mm. After firing in air at 500°C to remove the added dispersant, binder, and lubricant, a slurry of the high-resistance layer-forming substance prepared in advance was applied to the calcined body at 1020°C using a spray gun.
この高抵抗層形成物質のスラリーは次のように調製され
た。酸化第二鉄（Ｆｅ＊０３） ５０モル％以上。This slurry of high resistance layer forming material was prepared as follows. Ferric oxide (Fe*03) 50 mol% or more.
酸化ビスマスＣＢｘｔ Ｏｘ ） ５０モル％以下で合
計１００モル％となる混合量で混合した粉末を重量比１
：１となるように純水を加え適当なスラリーにした。な
お、粉末は素体側面に塗布する量を変化させるために加
える量を変化させた。Bismuth oxide CBxt Ox) Powder mixed in an amount of 50 mol% or less and a total of 100 mol% at a weight ratio of 1
: Pure water was added to make a suitable slurry. The amount of powder added was varied in order to vary the amount applied to the side surface of the element body.
このとき、ポリビニルアルコールのような結合剤を０．
１重量％程添加することにより、塗膜の強度が増大する
。このように調製したスラリーを前記素体の側面に塗布
した後この素体を空気雰囲気中で１２００℃の温度で焼
成した。その後、焼結素体の両面を平行に研磨し厚さ２
０ｇ＋＋ｍとした後、アルミニウムの溶射により両面に
電極を形成して、非直線抵抗体を得た。At this time, add 0.0% of a binder such as polyvinyl alcohol.
By adding about 1% by weight, the strength of the coating film increases. After the slurry thus prepared was applied to the side surface of the element body, the element body was fired at a temperature of 1200° C. in an air atmosphere. After that, both sides of the sintered body are polished parallel to each other to a thickness of 2
After setting it to 0 g++m, electrodes were formed on both sides by thermal spraying of aluminum to obtain a non-linear resistor.
このようにして得られた非直線抵抗体の特性を第１図及
び第２図に示す、第１図は横軸に高抵抗層形成物質の素
体１ｃｍ２当りに対する変えた塗布量（■ｇ／ａＪ）を
とり、縦軸に２．５ｍｓの矩形波電流を用い２０個の試
料について２０回に全数が耐える放電耐量（Ｊ／ｃｃ）
をとった場合の放電耐量特性を示すもので。The characteristics of the nonlinear resistor obtained in this way are shown in Figures 1 and 2. In Figure 1, the horizontal axis shows the amount of coating of the high-resistance layer-forming material per 1 cm2 of the element body (g/ aJ), and using a 2.5 ms square wave current on the vertical axis, the discharge withstand capacity (J/cc) that all samples can withstand 20 times for 20 samples.
This shows the discharge withstand characteristics when .
５ （ｍｇ／ ｃｘｌ ）以上でほぼ平坦になっている
ことがわかる。5 (mg/cxl) or more, it can be seen that it becomes almost flat.
第２図は、横軸に例えば、ＩＲ（抵抗分もれ電流値）を
管理特性値にとり、縦軸に個数、すなわち度数をとると
、実線で示した曲ｉＡは塗布量１５Ｂ／ｄのときの分布
曲線でバラツキは少ない、また塗布ｉ２５ＩＩＩｇ／ｃ
ｎｔのときは点線で示した分布曲線で曲線Ｂに示すもの
でバラツキが大きい。すなわち、第１図及び第２図から
素体側面の塗布量は５ ｍｇ／ｄないし２０ｍｇ／ ｃ
ｄの範囲のものが放電耐量及びバラツキの点からよい結
果が得られることがわかる。In Figure 2, for example, the horizontal axis shows IR (resistance leakage current value) as the management characteristic value, and the vertical axis shows the number of pieces, that is, the frequency.The curve iA shown by the solid line is when the coating amount is 15B/d. There is little variation in the distribution curve, and the coating i25IIIg/c
nt, the distribution curve shown by the dotted line is shown by curve B, and the variation is large. That is, from Figures 1 and 2, the amount of coating on the side surface of the element is 5 mg/d to 20 mg/c.
It can be seen that good results can be obtained in terms of discharge withstand capacity and variation when the value of d is within the range.
なお、第２図の曲線Ａは塗布量が１５ｍｇ／ａ（の場合
のバラツキ分布であり、曲ａＢは２５ｍｇ／ ｃｊの場
合のバラツキ分布である。第２図で例えば管理値から３
０％以上外れたものができた場合を″ロット不良″と判
定した場合１曲線Ｂでは約３割不良ロフトを含んでいて
、曲線Ａでは不良ロフトは皆無になる。そして、塗布量
が２０＋ａｇ／ ｃｒｌ を越えた場合は曲線Ｂに、２
０ｍｇ／ ｃｓｊ以下では曲線Ａになることが確認ずみ
である。Curve A in Fig. 2 shows the variation distribution when the coating amount is 15 mg/a, and curve aB shows the variation distribution when the coating amount is 25 mg/cj.
When a product with a deviation of 0% or more is determined to be a "lot defective", curve B contains about 30% defective lofts, and curve A has no defective lofts. If the coating amount exceeds 20+ag/crl, curve B
It has been confirmed that curve A occurs below 0 mg/csj.
第１図及び第２図から明らかなように鉄を主成分とする
高抵抗層形成物質を素体側面に１ｃｍ２当り５ないし２
０ｍｇ塗布することにより放電耐量特性が優れ、特性上
のバラツキが少ない、すなわち不良ロットが皆無になる
非直線抵抗体が得られる。As is clear from Figures 1 and 2, a high resistance layer-forming material containing iron as a main component is coated on the side surface of the element body at 5 to 2 layers per 1 cm2.
By applying 0 mg, a non-linear resistor with excellent discharge withstand characteristics and little variation in characteristics, that is, with no defective lots, can be obtained.
以上のように本発明により製造した非直線抵抗体は、耐
湿性及び耐パルス特性に優れ、しかも放電耐量特性が向
上し、特性上のバラツキが改善される。このことは、非
直線抵抗体を電力用Ｍ雷器などに使用した場合において
、非常に優れた信頼性を保証するもので、実用的見地か
ら見て重要である。As described above, the nonlinear resistor manufactured according to the present invention has excellent moisture resistance and pulse resistance, and also has improved discharge withstand characteristics and improved variation in characteristics. This guarantees extremely high reliability when the nonlinear resistor is used in a power M-lighting device, and is important from a practical standpoint.
なお本発明の実施例では、原料として酸化物を用いたが
、焼結して酸化物になるものであればよく１例えば水酸
化物、炭酸化物、シュウ酸化物などであっても同じ効果
が得られる。また実施例に示した添加物以外に、非直線
抵抗体の特性を向上させる目的で他の成分を加えてもよ
い。In the examples of the present invention, an oxide was used as the raw material, but any material that can be sintered to form an oxide may be used. For example, hydroxides, carbonates, oxalates, etc. can also be used with the same effect. can get. In addition to the additives shown in the examples, other components may be added for the purpose of improving the characteristics of the nonlinear resistor.
さらに本発明の実施例では高抵抗層形成物質を仮焼した
素体に塗布したが、成形した素体に塗布しても同様な効
果が詔められた。Furthermore, in the examples of the present invention, the high-resistance layer-forming substance was applied to the calcined element body, but the same effect was obtained even if it was applied to the molded element body.
以上説明したように本発明によれば、耐湿特性及び耐イ
ンパルス特性に優れ、しかも放電耐量特性が向上し、特
性上のバラツキが改善された信頼性の高い非直線抵抗体
を得ることのできる非直線抵抗体の製造方法を提供する
ことができる。As explained above, according to the present invention, it is possible to obtain a highly reliable nonlinear resistor with excellent moisture resistance and impulse resistance, improved discharge withstand characteristics, and improved variation in characteristics. A method for manufacturing a linear resistor can be provided.
【図面の簡単な説明】
第１図は本発明の一実施例に係る非直線抵抗体の放電耐
量特性図、
第２図は本発明の一実施例に係る非直線抵抗体の量産時
における特性のバラツキを示す特性図である。[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a discharge withstand characteristic diagram of a non-linear resistor according to an embodiment of the present invention, and Fig. 2 is a characteristic diagram during mass production of a non-linear resistor according to an embodiment of the present invention. FIG.
Claims (1)
えた、酸化亜鉛を主成分とする成形素体あるいは予め成
形体を仮焼した素体の側面に、鉄を主成分とする高抵抗
層形成物質を前記素体側面１ｃｍ＾２当り５〜２０ｍｇ
塗布した後、この素体を焼結して焼結体側面に高抵抗層
を形成することを特徴とする非直線抵抗体の製造方法。A molded body made of zinc oxide as a main component or a pre-calcined molded body with an additive that causes the sintered body itself to have voltage non-linearity is added to the side of the body made of iron as a main component. The resistance layer forming substance is 5 to 20 mg per 1 cm^2 of the side surface of the element body.
A method for manufacturing a non-linear resistor, which comprises coating the element body and then sintering the element body to form a high resistance layer on the side surface of the sintered body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61258111A JPS63114104A (en) | 1986-10-31 | 1986-10-31 | Manufacture of nonlinear resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61258111A JPS63114104A (en) | 1986-10-31 | 1986-10-31 | Manufacture of nonlinear resistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63114104A true JPS63114104A (en) | 1988-05-19 |
Family
ID=17315654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61258111A Pending JPS63114104A (en) | 1986-10-31 | 1986-10-31 | Manufacture of nonlinear resistor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63114104A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0258805A (en) * | 1988-08-24 | 1990-02-28 | Matsushita Electric Ind Co Ltd | Manufacture of zinc oxide varistor |
| WO1996036058A1 (en) * | 1995-05-08 | 1996-11-14 | Matsushita Electric Industrial Co., Ltd. | Lateral high-resistance additive for zinc oxide varistor, zinc oxide varistor produced using the same, and process for producing the varistor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5213692A (en) * | 1975-07-23 | 1977-02-02 | Marcon Electronics Co Ltd | Non-linear voltage resistor |
| JPS59172201A (en) * | 1983-03-18 | 1984-09-28 | 株式会社明電舎 | Method of forming insulating film of voltage nonlinear resistor element |
| JPS60206003A (en) * | 1984-03-29 | 1985-10-17 | 株式会社東芝 | Nonlinear resistor |
-
1986
- 1986-10-31 JP JP61258111A patent/JPS63114104A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5213692A (en) * | 1975-07-23 | 1977-02-02 | Marcon Electronics Co Ltd | Non-linear voltage resistor |
| JPS59172201A (en) * | 1983-03-18 | 1984-09-28 | 株式会社明電舎 | Method of forming insulating film of voltage nonlinear resistor element |
| JPS60206003A (en) * | 1984-03-29 | 1985-10-17 | 株式会社東芝 | Nonlinear resistor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0258805A (en) * | 1988-08-24 | 1990-02-28 | Matsushita Electric Ind Co Ltd | Manufacture of zinc oxide varistor |
| WO1996036058A1 (en) * | 1995-05-08 | 1996-11-14 | Matsushita Electric Industrial Co., Ltd. | Lateral high-resistance additive for zinc oxide varistor, zinc oxide varistor produced using the same, and process for producing the varistor |
| US5980788A (en) * | 1995-05-08 | 1999-11-09 | Matsushita Electric Industrial Co., Ltd. | Lateral high-resistance additive for zinc oxide varistor, zinc oxide varistor produced using the same, and process for producing the varistor |
| US6224937B1 (en) | 1995-05-08 | 2001-05-01 | Matsushita Electric Industrial Co., Ltd. | Method of manufacturing a zinc oxide varistor |
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