JPH01140705A - Transformer for microwave oven - Google Patents
Transformer for microwave ovenInfo
- Publication number
- JPH01140705A JPH01140705A JP62299212A JP29921287A JPH01140705A JP H01140705 A JPH01140705 A JP H01140705A JP 62299212 A JP62299212 A JP 62299212A JP 29921287 A JP29921287 A JP 29921287A JP H01140705 A JPH01140705 A JP H01140705A
- Authority
- JP
- Japan
- Prior art keywords
- winding
- iron core
- secondary winding
- transformer
- grounded
- 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
- 238000004804 winding Methods 0.000 claims abstract description 85
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000011810 insulating material Substances 0.000 abstract description 6
- 239000010445 mica Substances 0.000 abstract description 6
- 229910052618 mica group Inorganic materials 0.000 abstract description 6
- 230000015556 catabolic process Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract 1
- 208000027418 Wounds and injury Diseases 0.000 description 7
- 239000003990 capacitor Substances 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
- 206010014357 Electric shock Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of High-Frequency Heating Circuits (AREA)
- Insulating Of Coils (AREA)
Abstract
Description
【発明の詳細な説明】
［５％！明の目的］
（産業上の利用分野）
本発明は、電子レンジに内蔵されたマグネトロンを動作
させる為の電子レンジ用トランスに関し、特に絶縁構造
の改良に関する。[Detailed description of the invention] [5%! BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microwave oven transformer for operating a magnetron built into a microwave oven, and particularly relates to an improvement in insulation structure.
（従来の技術）
電子レンジに内蔵されているマグネトロンを動作させる
には、通常数千ボルトの高電圧を駆動電圧として印加供
給する必要がある。このような高電圧を発生させるトラ
ンスの二次巻線には上記高電圧のためにコロナ放電が発
生するおそれがある。(Prior Art) In order to operate a magnetron built into a microwave oven, it is usually necessary to apply and supply a high voltage of several thousand volts as a driving voltage. There is a risk that corona discharge will occur in the secondary winding of the transformer that generates such high voltage.
特に電源を高周波化して数１０ＫＨ１の高い周波数の電
圧を印加供給するように構成されたトランスにあっては
、上記コロナ放電が周波数に比例して増大する傾向を有
している為、十分注意する必要がある。In particular, for transformers configured to supply high-frequency voltages of several tens of kilohertz by increasing the frequency of the power supply, sufficient care must be taken as the corona discharge described above tends to increase in proportion to the frequency. There is a need.
このようなトランス二次巻線のコロナ放電を防止する手
段として、従来は耐コロナ性にすぐれたマイカ等の絶縁
材を用いて絶縁耐力の向上をはかっていた。しかるにマ
イカ等の絶縁材は一般に高価格である為、材料費がかさ
み、トランス自体が高価格なものとならざるを得なかっ
た。As a means to prevent such corona discharge in the transformer secondary winding, conventionally, an insulating material such as mica, which has excellent corona resistance, has been used to improve dielectric strength. However, since insulating materials such as mica are generally expensive, the cost of materials increases, and the transformer itself has to be expensive.
なお、トランスの一次巻線と二次＠線との間のＢ電圧部
における絶縁が破壊されて一次側と二次側とが電気的に
短絡されると、トランスの一部が筐体に接地されている
関係で、筐体が高電圧になり、電撃を受ける等の危険が
ある。このためトランスの一次巻線と二次巻線との間の
絶縁についても十分配慮する必要があった。Note that if the insulation in the B voltage section between the primary winding of the transformer and the secondary @ wire is broken and the primary and secondary sides are electrically short-circuited, a part of the transformer will be grounded to the casing. Because of this, the casing is exposed to high voltage and there is a risk of electric shock. Therefore, it was necessary to give sufficient consideration to the insulation between the primary winding and the secondary winding of the transformer.
（発明が解決しようとする問題点）
上記のように従来の電子レンジ用トランスは、コロナ放
電の発生防止手段として、高価格なマイカ等の絶縁材を
使用していた為、コスト高なものとなる上、一次巻線と
二次巻線とが短絡事故をおこさないように格別の絶縁手
段を講じない限り、必ずしも安全性を確保し難いという
問題があった。(Problems to be solved by the invention) As mentioned above, conventional microwave oven transformers use expensive insulating materials such as mica as a means to prevent corona discharge, resulting in high costs. Furthermore, there is a problem in that it is difficult to ensure safety unless special insulation measures are taken to prevent a short circuit between the primary winding and the secondary winding.
そこで本発明の目的は、マイカ等の高価格な絶縁材を用
いることなくコロナ放電の発生を防止でき、安価に製作
可能である上、安全性にすぐれた電子レンジ用トランス
を提供することにある。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a microwave oven transformer that can prevent corona discharge without using expensive insulating materials such as mica, can be manufactured at low cost, and has excellent safety. .
（問題点を解決する為の手段）
本発明は上記の問題を解決し目的を達成する為に次のよ
うな手段を講じた。すなわち、閉磁路を形成する鉄心と
、この鉄心に巻装された一次巻線と、この一次巻線に前
記鉄心を介して磁気結合された二次巻線とを具備し、前
記二次巻線は鉄心の一部に複数の分巻体を直列的に巻装
し、接地された一端側から接地されていない他端側へい
くに従って各分巻体の鉄心に対する離間距離が順次大き
くなるように設定した。なお二次巻線は、接地されてい
る一端側の分巻体を一次巻線１１にして上記一次巻線に
近接配置されていることが望ましい。(Means for Solving the Problems) In order to solve the above problems and achieve the objectives, the present invention takes the following measures. That is, it includes an iron core forming a closed magnetic path, a primary winding wound around this iron core, and a secondary winding magnetically coupled to this primary winding via the iron core, and the secondary winding In this method, a plurality of shunt winding bodies are wound in series around a part of the iron core, and the distance between each shunt winding body and the iron core increases in sequence from one end that is grounded to the other end that is not grounded. Set. The secondary winding is desirably arranged close to the primary winding, with the primary winding 11 being the shunt at one end that is grounded.
［作用］
このような手段を講じたことにより、次のような作用を
呈する。二次巻線と鉄心との電位差が大きくなる領域に
いくに従って二次巻線が鉄心から離れるようにしたので
、鉄心と巻線との電位傾度はほぼ低い一定値となり、コ
ロナ放電は発生しなくなる。また接地されている一端側
の分巻体を一次巻線側にして配置するようにすれば、二
次巻線の一端側が低電圧となり、一次巻線と二次巻線と
の間で絶縁破壊するおそれがなくなる上、万一絶縁破壊
しても極度の危険はなく、安全性を確保できる。[Effects] By taking such measures, the following effects are achieved. As the potential difference between the secondary winding and the iron core increases, the secondary winding moves away from the iron core, so the potential gradient between the iron core and the winding becomes a constant low value, and corona discharge no longer occurs. . In addition, if the shunt winding on one end, which is grounded, is placed on the primary winding side, one end of the secondary winding will have a low voltage, causing dielectric breakdown between the primary and secondary windings. In addition to eliminating the risk of damage, even if insulation breaks down, there is no extreme danger, and safety can be ensured.
［実施例］ 第１図は本発明の一実施例の構造を示す正面図である。[Example] FIG. 1 is a front view showing the structure of an embodiment of the present invention.
同図において１０は閉磁路を形成する鉄心であり、中心
部には中央脚１０ｃを有し、両側には側脚１０ａ 、
１０ｂを有している。上記中央脚１０ｃには一次巻線１
１と、この−取巻１；１１１に鉄心を介して磁気結合さ
れる二次巻線１２とが所定の離間距離をおいて巻装され
ている。In the figure, 10 is an iron core that forms a closed magnetic path, and has a central leg 10c at the center, side legs 10a on both sides,
10b. The central leg 10c has a primary winding 1.
1 and a secondary winding 12 which is magnetically coupled to this surrounding winding 1; 111 via an iron core are wound at a predetermined distance.
二次巻線１２は、一定間隔で仕切壁を有する巻枠１３に
対して複数個（本実施例では３個）の分巻体１２ａ 、
１２ｂ 、 １２ｃ 、 １２ｄが直列的に分割巻回
されたものとなっている。そして二次巻線１２の一次巻
線１１に隣合っている一端側の分巻体１２ａからはアー
ス線１４が引出され、その端末の端子１５が接地されて
いる。また二次巻線１２の他端側の分巻体１２ｄからは
高電圧引出線１６が引出され、その端末が端子１７に接
続されている。The secondary winding 12 includes a plurality of (three in this embodiment) divided winding bodies 12a,
12b, 12c, and 12d are divided and wound in series. A ground wire 14 is drawn out from the shunt body 12a at one end of the secondary winding 12 adjacent to the primary winding 11, and a terminal 15 at the end thereof is grounded. Further, a high voltage lead wire 16 is drawn out from the shunt body 12d at the other end of the secondary winding 12, and its terminal is connected to a terminal 17.
ところで前記二次巻線１２を構成している各分巻体１２
ａ 、 ？２ｂ 、 １２ｃ 、 １２ｄは、その巻数
を１２ａ ＞１２ｂ ＞１２ｃ ＞１２ｄとなる
ように巻回され、接地された一端側から他端側へいくに
従って、各分巻体１２ａ 、 １２ｂ 、 １２ｃ 。By the way, each of the winding bodies 12 constituting the secondary winding 12
a,? 2b, 12c, and 12d are wound so that the number of turns is 12a>12b>12c>12d, and each shunt body 12a, 12b, 12c is wound as it goes from one end that is grounded to the other end.
１２ｄの鉄心側脚１０ａ 、 １０ｂに対する離間距Ｎ
Ｌａ。Distance N between the iron core side legs 10a and 10b of 12d
La.
Ｌｂ、Ｌｃ、Ｌｄが順次大きくなるように設定されてい
る。Lb, Lc, and Ld are set to increase successively.
第２図は第１図に示すトランスをインバータ化されたマ
グネトロン駆動回路に接続した図である。FIG. 2 is a diagram in which the transformer shown in FIG. 1 is connected to an inverter-based magnetron drive circuit.
同図において、２０は直流電源であり、その正負端子２
０ａ 、 ２０ｂ Ｃ前記トランスの一次巻線１１がイ
ンバータ回路２１を介して接続されている。インバータ
回路２１は発振回路２２と、この発振回路２２によりＯ
Ｎ、ＯＦＦ制御されるスイッチラングトランジスタ２３
と、このトランジスタ２３に逆並列接続されたバイパス
ダイオード２４と、−取巻＄２１１に並列接続された充
放電用コンデンサ２５とからなっている。In the figure, 20 is a DC power supply, and its positive and negative terminals 2
0a, 20bC The primary winding 11 of the transformer is connected via an inverter circuit 21. The inverter circuit 21 includes an oscillation circuit 22 and an O
N, OFF controlled switch rung transistor 23
, a bypass diode 24 connected in antiparallel to this transistor 23, and a charging/discharging capacitor 25 connected in parallel to the surrounding capacitor 211.
トランスの二次側にはマグネトロン回路２６が接続され
ている。すなわち二次巻線１２の端子１７．１５間には
コンデンサ２７．ダイオード２８を介して高電圧が印加
されるようにマグネトロン２９が接続されている。この
マグネトロン２９のヒータ部はヒータ電源３０に接続さ
れている。なお二次巻線１２の端子１５にマグネトロン
２９の一端およびダイオード２８のカソードと共に接地
されている。A magnetron circuit 26 is connected to the secondary side of the transformer. That is, a capacitor 27.15 is connected between the terminals 17.15 of the secondary winding 12. A magnetron 29 is connected so that a high voltage is applied through a diode 28. The heater section of this magnetron 29 is connected to a heater power source 30. Note that the terminal 15 of the secondary winding 12 is grounded together with one end of the magnetron 29 and the cathode of the diode 28.
次にこのように構成された本実施例の作用を説明する。Next, the operation of this embodiment configured as described above will be explained.
第２図に示す如く接続された状態においてインバータ回
路２１を動作させると、トランスの二次巻線１２がイン
バータ回路２１による高周波電圧で励磁される。そうす
ると、鉄心１０を介して二次巻線１２には、一次巻線１
１と二次巻［１１２との巻数比に応じた高電圧が誘起す
る。この高電圧は高電圧側引出線１６により取出され、
マグネトロン２９に印加供給される。このためマグネト
ロン２９が作動し、数ＧＨｚの周波数の電磁波を発生す
る。このとき、二次巻線１２の各分巻体１２ａ〜１２ｄ
と鉄心側脚１０ａ。When the inverter circuit 21 is operated in the connected state as shown in FIG. 2, the secondary winding 12 of the transformer is excited by the high frequency voltage generated by the inverter circuit 21. Then, the primary winding 1 is connected to the secondary winding 12 via the iron core 10.
A high voltage is induced according to the turns ratio between the winding 1 and the secondary winding [112]. This high voltage is taken out by the high voltage side lead wire 16,
The voltage is supplied to the magnetron 29. Therefore, the magnetron 29 is activated and generates electromagnetic waves with a frequency of several GHz. At this time, each of the winding bodies 12a to 12d of the secondary winding 12
and the iron core side leg 10a.
１０ｂとの間には、
１２ｄ ＞１２ｃ ＞１２ｂ ＞１２ａなる順位で大き
な電位差が発生する。10b, a large potential difference occurs in the following order: 12d > 12c > 12b > 12a.
例えば分巻体１２ｄには２０００Ｖ 、分巻体１２Ｃに
は１７００Ｖ、分巻体１２ｂには１３００Ｖ 、分巻体
１２ａには７００ｖなる実効値の電圧が鉄心１０との間
に発生する。しかるに鉄心１０と各分巻体との間には前
記したように所定の離間距離が設けられているので、電
位傾度はそれほど大きなものとならない。すなわち上記
距離を、分巻体１２ａ；ｂ
２Ｍ、分巻体１２ｃ ： ３ ｍ、分巻体１２ｄ；４Ｍ
Ｒとすると、電位傾度（電界強度）は各々７〜５００Ｖ
／ｍとなり、すべて同程度になる。したがって、この程
度の電位傾度（電界強度）ではコロナ放電が発生しなく
なる。For example, voltages with an effective value of 2000 V in the shunt winding body 12d, 1700 V in the shunt winding body 12C, 1300 V in the shunt winding body 12b, and 700 V in the shunt winding body 12a are generated between the shunt winding body 12a and the iron core 10, for example. However, since a predetermined distance is provided between the iron core 10 and each shunt body as described above, the potential gradient does not become so large. That is, the above distances are: 2M for the winding body 12a; b 2M for the winding body 12c; 3 m for the winding body 12c; 4M for the winding body 12d
R, the potential gradient (electric field strength) is 7 to 500 V, respectively.
/m, and all are at the same level. Therefore, corona discharge will not occur at this level of potential gradient (electric field strength).
また二次巻線１２の筐体に接地されている一端側の分巻
体１２ａが一次巻線１１側となるように配置されている
ので、二次巻線１２の全体の電圧が約２０００Ｖである
とすると、巻線が等分巻されている場合には、分巻部１
２ａの電圧はｓｏｏ ｖとなり、かなり低い電圧どなる
。したがって一次巻線１１と二次巻ｌ！；１１２の分巻
部１２ａとの電位差は小さく、両者間で絶縁破壊を生じ
ることはなくなる。また万一絶縁破壊が生じても筐体に
極端に大きな電圧が発生することはなく、電撃等を受け
る危険性は回避される。In addition, since the shunt body 12a on one end side, which is grounded to the housing of the secondary winding 12, is arranged on the primary winding 11 side, the entire voltage of the secondary winding 12 is approximately 2000V. If there is, if the winding is wound in equal parts, the divided winding part 1
The voltage at 2a becomes soo v, which is a fairly low voltage. Therefore, the primary winding 11 and the secondary winding l! ;The potential difference between the shunt portion 12a and the shunt portion 112 is small, and dielectric breakdown will not occur between the two. Furthermore, even if dielectric breakdown occurs, an extremely large voltage will not be generated in the casing, and the risk of receiving electric shock or the like is avoided.
なお本発明は上述した実施例に限定されるものではない
。例えば上述した実施例では各分巻体の巻幅を一定とし
巻数を変えることによって鉄心１０との距離を変化させ
るようにしたが、巻数は同一とじ分巻体の巻幅を高電圧
側に近づくに従って広くすることによって鉄心１０との
距離を大きくとるようにしても良い。このほか本発明の
要旨を逸脱しない範囲で種々変形実施可能であるのは勿
論である。Note that the present invention is not limited to the embodiments described above. For example, in the embodiment described above, the winding width of each shunt winding body is kept constant and the distance from the iron core 10 is changed by changing the number of windings. The distance from the iron core 10 may be increased by increasing the width accordingly. It goes without saying that various other modifications can be made without departing from the gist of the present invention.
［発明の効果］
本発明によれば、閉磁路を形成する鉄心に巻装される二
次巻線として、鉄心の一部に複数の分巻体を直列的に巻
装し、接地された一端側から接地されていない他端側へ
いくに従って各分巻体の鉄心に対する離間距離が順次大
きくなるようにしたものを用いたので、マイカ等の高価
格な絶縁材を用いることなくコロナ放電の発生を防止で
き、安価に製作可能である上、安全性にすぐれた電子レ
ンジ用トランスを提供できる。[Effects of the Invention] According to the present invention, as a secondary winding wound around an iron core forming a closed magnetic path, a plurality of shunt bodies are wound in series around a part of the iron core, and one end that is grounded is Since the distance between each shunt and the iron core gradually increases from one side to the other end that is not grounded, corona discharge can occur without using expensive insulating materials such as mica. It is possible to provide a transformer for a microwave oven which can be prevented from occurring, can be produced at low cost, and has excellent safety.
第１図および第２図は本発明の一実施例を示す図で、第
１図はトランスの構造を示す図、第２図はトランスをイ
ンバータ化されたマグネトロン駆動回路に接続した図で
ある。
１０・・・鉄心、１０ａ 、 １０ｂ・・・側脚、１０
ｃ・・・中央脚、１１・・・一次巻線、１２・・・二次
巻線、１２ａ〜１２ｄ・・・分巻体、１３・・・巻枠、
１４・・・アース線、１６・・・高電圧引出線、１５、
１７・・・端子、２０・・・直流電源、２０ａ 、 ２
０ｂ・・・正負端子、２１・・・インバータ回路、２２
・・・発成回路、２３・・・スイッチソングトランジス
タ、２４・・・バイパスダイオード、２５・・・充放電
用コンデンサ、２６・・・マグネトロン回路、２７・・
・コンデンサ、２８・・・バイパスダイオード、２９・
・・マグネトロン、３０・・・ヒータ電源。
出願人代理人 弁理士 鈴江武彦FIGS. 1 and 2 are diagrams showing one embodiment of the present invention, with FIG. 1 showing the structure of a transformer, and FIG. 2 showing the transformer connected to an inverter-based magnetron drive circuit. 10... Iron core, 10a, 10b... Side leg, 10
c... Central leg, 11... Primary winding, 12... Secondary winding, 12a to 12d... Division winding body, 13... Winding frame,
14... Earth wire, 16... High voltage lead wire, 15,
17...terminal, 20...DC power supply, 20a, 2
0b...Positive/negative terminal, 21...Inverter circuit, 22
... Generator circuit, 23... Switch song transistor, 24... Bypass diode, 25... Charging/discharging capacitor, 26... Magnetron circuit, 27...
・Capacitor, 28...Bypass diode, 29・
...Magnetron, 30...Heater power supply. Applicant's agent Patent attorney Takehiko Suzue
Claims (2)
一次巻線と、この一次巻線に前記鉄心を介して磁気結合
された二次巻線とを具備し、前記二次巻線は鉄心の一部
に複数の分巻体を直列的に巻装し、接地された−端側か
ら接地されていない他端側へいくに従って各分巻体の鉄
心に対する離間距離が順次大きくなるように設定されて
いることを特徴とする電子レンジ用トランス。(1) An iron core forming a closed magnetic path, a primary winding wound around this iron core, and a secondary winding magnetically coupled to this primary winding via the iron core, and the secondary winding The wire has a plurality of shunts wound in series around a part of the iron core, and the distance between each shunt and the core gradually increases from the grounded end to the ungrounded end. A transformer for a microwave oven characterized by being set as follows.
次巻線側にして上記一次巻線に近接配置されていること
を特徴とする特許請求の範囲第１項記載の電子レンジ用
トランス。(2) The secondary winding is arranged close to the primary winding with the shunt winding on one end side which is grounded facing the primary winding. Transformer for microwave oven.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62299212A JPH01140705A (en) | 1987-11-27 | 1987-11-27 | Transformer for microwave oven |
| KR1019880015342A KR910003491B1 (en) | 1987-11-27 | 1988-11-22 | Transformer for microwave oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62299212A JPH01140705A (en) | 1987-11-27 | 1987-11-27 | Transformer for microwave oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01140705A true JPH01140705A (en) | 1989-06-01 |
Family
ID=17869601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62299212A Pending JPH01140705A (en) | 1987-11-27 | 1987-11-27 | Transformer for microwave oven |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH01140705A (en) |
| KR (1) | KR910003491B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0886286A2 (en) * | 1997-06-16 | 1998-12-23 | Ngk Spark Plug Co., Ltd | High-voltage transformer and a vehicle-lamp lighting-on device using the same |
| WO1999063556A1 (en) * | 1998-05-30 | 1999-12-09 | Profec Technologies Limited | Safety isolating transformer |
-
1987
- 1987-11-27 JP JP62299212A patent/JPH01140705A/en active Pending
-
1988
- 1988-11-22 KR KR1019880015342A patent/KR910003491B1/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0886286A2 (en) * | 1997-06-16 | 1998-12-23 | Ngk Spark Plug Co., Ltd | High-voltage transformer and a vehicle-lamp lighting-on device using the same |
| EP0886286A3 (en) * | 1997-06-16 | 2000-03-22 | Ngk Spark Plug Co., Ltd | High-voltage transformer and a vehicle-lamp lighting-on device using the same |
| WO1999063556A1 (en) * | 1998-05-30 | 1999-12-09 | Profec Technologies Limited | Safety isolating transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| KR890008866A (en) | 1989-07-12 |
| KR910003491B1 (en) | 1991-06-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4089049A (en) | Inverter circuit including transformer with shielding of undesired radiations | |
| US4707619A (en) | Saturable inductor switch and pulse compression power supply employing the switch | |
| US4682114A (en) | Power modulator provided with a transformer | |
| US4724362A (en) | High frequency lamp igniter using a spiral line pulse generator in combination with a series inductor-switch circuit | |
| RU2524672C2 (en) | High voltage transformer | |
| EP0410526B1 (en) | Generator for generating an electric voltage | |
| US4680509A (en) | Method and apparatus for starting high intensity discharge lamps | |
| US4812960A (en) | Power feeding apparatus | |
| JPH0530146B2 (en) | ||
| JPH01140705A (en) | Transformer for microwave oven | |
| US3014170A (en) | High- voltage generator | |
| US11222744B1 (en) | Power-dense bipolar high-voltage capacitor charger | |
| US4409492A (en) | Shock excited pulse transformer | |
| JPS61240588A (en) | High frequency heater | |
| US2727160A (en) | Pulse generator | |
| KR900009088B1 (en) | Power supply | |
| US3387178A (en) | High frequency voltage injector circuits for welders | |
| JPH08107245A (en) | Pulse power source | |
| JP3033572B1 (en) | Pulse power supply for klystron | |
| JPH0342810A (en) | Pulse transformer | |
| EP0742567B1 (en) | Capacitive and inductive element | |
| JPH11308882A (en) | Pulse discharge circuit and laser apparatus | |
| SU868988A1 (en) | Square-wave generator | |
| SU1034157A1 (en) | Helical generator | |
| RU2003243C1 (en) | Nanosecond accelerator |