JPH03218612A - power converter - Google Patents

power converter

Info

Publication number
JPH03218612A
JPH03218612A JP2013156A JP1315690A JPH03218612A JP H03218612 A JPH03218612 A JP H03218612A JP 2013156 A JP2013156 A JP 2013156A JP 1315690 A JP1315690 A JP 1315690A JP H03218612 A JPH03218612 A JP H03218612A
Authority
JP
Japan
Prior art keywords
current transformer
voltage
inverter circuit
transformer
slit
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
Application number
JP2013156A
Other languages
Japanese (ja)
Other versions
JP2596157B2 (en
Inventor
Kazuho Sakamoto
和穂 坂本
Takashi Niwa
孝 丹羽
Haruo Suenaga
治雄 末永
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP2013156A priority Critical patent/JP2596157B2/en
Publication of JPH03218612A publication Critical patent/JPH03218612A/en
Application granted granted Critical
Publication of JP2596157B2 publication Critical patent/JP2596157B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F2038/003—High frequency transformer for microwave oven
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0213—Electrical arrangements not otherwise provided for
    • H05K1/0254—High voltage adaptations; Electrical insulation details; Overvoltage or electrostatic discharge protection ; Arrangements for regulating voltages or for using plural voltages
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components

Landscapes

  • Control Of High-Frequency Heating Circuits (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Structure Of Printed Boards (AREA)

Abstract

PURPOSE:To eliminate the dangerous condition such as an electric leakage and an electric shock caused by the adhesion of waterdrops and the like by a method wherein a slit is provided on the printed substrate located between the primary winding pin and the secondary winding pin of a current transformer. CONSTITUTION:A current transformer 3 is attached to a printed substrate 1 using a current transformer primary winding 3c and a secondary winding pin 3e, and a slit 4 is provided between time. Accordingly, as the slit 4 is provided, even when drops of water are adhered to the current transformer 3, they drip on the printed substrate 1, the primary winding 3c and the secondary winding pin 3e are not connected by water and the insulation between them can be obtained securely. Also, even when a large quantity of drops of water is adhered, it flows out downward from the slit, and insulation is secured. As a result, the leakage of current and danger of an electric shock between the terminals of the current transformer 3 installed on the printed substrate 1 can be eliminated, and a safe power supply device can be obtained.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、電子レンジなどに利用され、商用電源などか
ら得られる電力を半導体スイッチング素子等により高周
波化するインノく一夕回路とその高周波化された電力を
昇圧しマグネトロンに供給するための電力変換装置に関
するものである。[Detailed Description of the Invention] Industrial Field of Application The present invention relates to an innovative circuit that is used in microwave ovens, etc., and converts power obtained from a commercial power source into a high frequency using a semiconductor switching element, etc. This invention relates to a power conversion device for boosting power and supplying it to a magnetron.

従来の技術 従来の例えば第６図に示された電力変換装置であるが、
プリント基板１に低圧回路と高圧回路がアースパターン
２を境界に装置されている。そしてアース端子２ａは電
子レンジの本体に接続されている。そして高圧回路のア
ースノくターン２を流れる電流をカレントトランス３に
より検出し、この信号を低圧側回路に伝達している。こ
の電力変換装置は電子レンジに利用されるため、食品か
ら出る水蒸気や台所で使用されるため水滴の散乱等によ
って、この電力変換装置にも水滴が付着するおそれがあ
る。第６図にカレントトランス３がプリント基板１に装
着された状態を横から見たものである。この場合に、水
滴がカレントトランス３に付着し、それが落下して図示
の如くプリント基板１に付着し、さらにカレントトラン
スの１次巻線３ｃと２次巻線ピン３ｅの間に水を介して
電気的な経路ができる。ここでカレントトランスの１次
巻線３Ｃはアーヌ端子を介して電子レンジ本体に接続さ
れ、またカレントトランスの２次巻線ピン３ｅは低圧側
回路に接線されている。低圧側回路は商用電源に接続さ
れている。従って、商用電源の電圧がカレン｝｝ランス
３の装着されたプリント基板１に付着した水滴を介電子
レンジ本体にかかる。すなわシ漏電が発生する。又、電
力レンジ本体が対地アースされてない場合に、人が操作
するため電子レンジに触れると感電する。この様な危険
な状態が発生する。BACKGROUND ART For example, the conventional power converter shown in FIG.
A low voltage circuit and a high voltage circuit are installed on a printed circuit board 1 with an earth pattern 2 as a boundary. The ground terminal 2a is connected to the main body of the microwave oven. The current flowing through the ground turn 2 of the high voltage circuit is detected by the current transformer 3, and this signal is transmitted to the low voltage circuit. Since this power conversion device is used in a microwave oven, there is a risk that water droplets may adhere to the power conversion device due to water vapor emitted from food or scattering of water droplets because it is used in the kitchen. FIG. 6 shows the state in which the current transformer 3 is mounted on the printed circuit board 1, viewed from the side. In this case, water droplets adhere to the current transformer 3, fall down and adhere to the printed circuit board 1 as shown in the figure, and furthermore, the water drops between the primary winding 3c and the secondary winding pin 3e of the current transformer. This creates an electrical path. Here, the primary winding 3C of the current transformer is connected to the main body of the microwave oven via the Arne terminal, and the secondary winding pin 3e of the current transformer is connected to the low voltage side circuit. The low voltage side circuit is connected to the commercial power supply. Therefore, the voltage of the commercial power supply is applied to the main body of the microwave oven through water droplets attached to the printed circuit board 1 on which the Karen lance 3 is mounted. In other words, electrical leakage occurs. In addition, if the power range itself is not grounded, if a person touches the microwave oven to operate it, they will receive an electric shock. Such a dangerous situation occurs.

発明が解決しようとする課題 この様にプリント基板１に装着されたカレントトランス
３に水滴が付着し、これがプリント基板１まで垂れてそ
の結果、カレントトランス３の１次，２次間の絶縁が確
保できなくなる。そしてその結果、漏電や感電という危
険性が生じないという課題があった。Problem to be Solved by the Invention In this way, water droplets adhere to the current transformer 3 mounted on the printed circuit board 1 and drip down to the printed circuit board 1, thereby ensuring insulation between the primary and secondary components of the current transformer 3. become unable. As a result, there is a problem in that there is no risk of electrical leakage or electric shock.

本発明は、このような従来の課題を解消するものであり
、水滴などの付着に対しても、漏電や感電の危険性をな
くそうとするものである。The present invention solves these conventional problems and aims to eliminate the risk of electrical leakage and electric shock even when water droplets are attached.

課題を解決するだめの手段 上記課題を解決するため、本発明の電力供給装置は、カ
レントトラン７．３のプリント基板１に装着している部
分において、カレントトランスの１次巻線３Ｃと２次巻
線ピン３ｅの間のプリント基板１にスリット４を設ける
構成である。Means for Solving the Problems In order to solve the above-mentioned problems, the power supply device of the present invention has the primary winding 3C and the secondary winding of the current transformer 7. A slit 4 is provided in the printed circuit board 1 between the winding pins 3e.

作　　用 本発明の電力供給装置は、カレントトランス３に水滴が
付着し、さら−にこの水滴が垂れてプリント基板１に付
着しても、スリット４を設けているために、水によって
カレン｝｝ランスの１次巻線３Ｃと２次巻線ピン３ｅが
接続される事はない。Function: In the power supply device of the present invention, even if water droplets adhere to the current transformer 3 and further drip down and adhere to the printed circuit board 1, since the slits 4 are provided, the current transformer 3 is prevented from being absorbed by the current. The primary winding 3C of the lance and the secondary winding pin 3e are never connected.

又、多量に水滴が付着しても、スリット４から下へ流出
するため、やはシ同様の効果がある。Further, even if a large amount of water droplets adhere, they flow downward from the slit 4, so that the same effect can be achieved.

従って、漏電や感電という危険が生じない。又、安全性
を確保できるという効果を有するものである。Therefore, there is no danger of electrical leakage or electric shock. Moreover, it has the effect of ensuring safety.

実施例 以下、本発明の一実施例Ｋついて図面に基づき、説明す
る。Embodiment Hereinafter, an embodiment K of the present invention will be explained based on the drawings.

第１図に示すように、高圧トランス２次巻線の高圧側端
子８ｂに高圧パターン６により接続された高圧コンデン
サ６および高圧ダイオード７とアーヌパターン２よシ成
る高圧回路と、高圧トランス１次巻線９に低圧回路パタ
ーン１３により接続される半導体スイッチング素子１０
や平滑コンデンサ１１や共振コンデンサ１２および制御
部１４より成る低圧回路とが、アーヌパターン２を境界
に設けている。As shown in FIG. 1, a high-voltage circuit consisting of a high-voltage capacitor 6 and a high-voltage diode 7 connected to the high-voltage side terminal 8b of the high-voltage transformer secondary winding by a high-voltage pattern 6, a high-voltage diode 7, and an Arnu pattern 2, and a high-voltage transformer primary winding A semiconductor switching element 10 connected to the line 9 by a low voltage circuit pattern 13
A low voltage circuit including a smoothing capacitor 11, a resonant capacitor 12, and a control section 14 are provided at the border of the Arnu pattern 2.

高圧トランヌ２次巻線の高圧側端子８ｂから高圧コンデ
ンサ６と高圧ダイオード７を使用して半波倍圧し、約４
０００Ｖの高圧をマグネトロン１７に印加している。ま
た、マグネトロン１７は電子レンジ本体にアース接続さ
れており、アース端子２ａからビス取めにより電子レン
ジ本体に接続され、かつ高圧トランス２次巻線アース側
端子８ａにアースパターン２を介して接続され、２次側
で閉ループを構成している。A half-wave voltage is doubled from the high voltage side terminal 8b of the high voltage transneum secondary winding using a high voltage capacitor 6 and a high voltage diode 7.
A high voltage of 000V is applied to the magnetron 17. Further, the magnetron 17 is grounded to the microwave oven main body, and is connected to the microwave oven main body by screwing from the ground terminal 2a, and is connected to the high voltage transformer secondary winding ground side terminal 8a via the ground pattern 2. , forming a closed loop on the secondary side.

また低圧回路は、商用電源を整流し、それを基に高周波
化しているため、アースに対する電位は商用電源の片方
が対地アースされているために１ｏＯ〜２００ｖ程度の
電力が印加されている。Furthermore, since the low voltage circuit rectifies the commercial power source and uses it to generate a high frequency, the electric potential relative to the ground is approximately 100 to 200 V because one side of the commercial power source is grounded.

また、カレントトランス３は高圧回路のアースパターン
２の電流をカレントトランスの１次巻線３Ｃに流し、こ
の出力をカレントトランスの２次巻線３ｄから２次巻線
ピン３ｅを介して取り出し、低圧回路の制御部１４にそ
の信号を伝達している。In addition, the current transformer 3 allows the current of the earth pattern 2 of the high voltage circuit to flow through the primary winding 3C of the current transformer, takes out this output from the secondary winding 3d of the current transformer via the secondary winding pin 3e, and outputs the current from the earth pattern 2 of the high voltage circuit to the primary winding 3C of the current transformer. The signal is transmitted to the control section 14 of the circuit.

第２図にカレントトランス３のプリント基板１への装着
されている状態を示す。カレントトランス１次巻ａ３ｃ
と２次巻線ビン３ｅによってプリント基板−１に・・ン
ダにより取シ付け、スリットを両者の間に設けている。FIG. 2 shows the state in which the current transformer 3 is mounted on the printed circuit board 1. Current transformer primary volume a3c
The secondary winding pin 3e is attached to the printed circuit board 1 by means of a . . . and a slit is provided between them.

第３図にカレントトランス３の構造図を示す。（ａ），
（ロ）はそれぞれ正面図，平面図であシ、（Ｃ）は正面
から見た断面図である。カレソトトランスのポビン３ｂ
に同１次巻ｓｓｃを１ターン巻き、そのままプリント基
板１への取υ付け用に下方に引き出している。又、ポビ
ン３ｂの横に絶縁を確保しながら同２次巻線３ｄを巻き
付け、２次巻線ピン３ｅにその端をからげている。FIG. 3 shows a structural diagram of the current transformer 3. (a),
(B) is a front view and a plan view, respectively, and (C) is a sectional view seen from the front. Pobin 3b of Kare Soto Trans
One turn of the same primary winding ssc is wound on the holder, and it is pulled out as it is for attachment to the printed circuit board 1. Further, the secondary winding 3d is wound next to the pobbin 3b while ensuring insulation, and its end is tied around the secondary winding pin 3e.

そしてコア３ａを図示の如く設けている。A core 3a is provided as shown in the figure.

さてここで、水滴がカレントトランス３に付着し、さら
に垂れてプリント基板１に付着したとしても、スリット
４を設けているため、カレントトランスの１次巻線３Ｃ
と２次巻線ビン３ｅの間は、水によって接続されること
はなく絶縁は確保される。又、多量の水滴が付着しても
、ヌリットから下方に流出して、やはシ絶縁は確保され
る。もしここで従来技術で述べた様にスリット４を設け
てなければ、低圧回路の１００〜２００Ｖの電圧が、水
を介して電子レンジ本体に印加され、漏電や感電が発生
し大変危険な状態になりかねない。この様にスリット４
により、このような危険な状態の発生はさけられる。Now, even if water droplets adhere to the current transformer 3 and further drip and adhere to the printed circuit board 1, since the slit 4 is provided, the primary winding 3C of the current transformer
and the secondary winding bin 3e are not connected by water and insulation is ensured. Furthermore, even if a large amount of water droplets adhere, they will flow downward from the null, ensuring insulation. If the slit 4 was not provided as described in the prior art, the voltage of 100 to 200 V from the low voltage circuit would be applied to the microwave oven body through the water, resulting in a very dangerous situation due to electrical leakage and electric shock. It could happen. Slit 4 like this
This will prevent such dangerous situations from occurring.

第４図は本発明の一実施例の電力変換装置の回路図であ
る。商用電源１６の片方は対地アースされており、この
電源をダイオードブリッジ１６により整流しそれを平滑
コンデンサ１１により平滑している。そして共振コンデ
ンサ１２と高圧トーランス１次巻線９のインダクタンス
によ＃）Ｌ−Ｃ共振発振させ、この電力を半導体スイッ
チング素子１ｏによってコントロールしている。この半
導体スイッチング素子１ｏは制御部１４によって制御さ
れている。そしてその制御はカレントトランス３により
高圧回路の電流を検出し、その信号に基づいて行なって
いる。この様に商用電源１６から高圧トランス１次巻線
９およびカレントトランス３０２次巻線３ｄまでが低圧
回路である。そして高圧トランス２次巻線８からマグネ
トロン１７までとカレントトランス３の１次巻線３Ｃま
でが高圧回路である。ここで高圧回路の一端、すなわち
高圧トランスの２次巻線アース端子８ａとマグネトロン
１７のアノード部が電子レンジ本体にアース接続されて
いる。FIG. 4 is a circuit diagram of a power conversion device according to an embodiment of the present invention. One side of the commercial power source 16 is grounded, and this power source is rectified by a diode bridge 16 and smoothed by a smoothing capacitor 11. The resonant capacitor 12 and the inductance of the high-voltage torrance primary winding 9 cause L-C resonance oscillation, and this power is controlled by the semiconductor switching element 1o. This semiconductor switching element 1o is controlled by a control section 14. The control is performed based on the signal detected by the current transformer 3 which detects the current in the high voltage circuit. In this way, the circuit from the commercial power supply 16 to the high voltage transformer primary winding 9 and the current transformer 30 secondary winding 3d is a low voltage circuit. A high voltage circuit includes the high voltage transformer secondary winding 8 to the magnetron 17 and the current transformer 3 primary winding 3C. Here, one end of the high voltage circuit, that is, the secondary winding ground terminal 8a of the high voltage transformer and the anode portion of the magnetron 17 are grounded to the microwave oven main body.

一般的にはさらにこの電子レンジ本体を対地ア−ヌに接
続する事により安全を確保する様にしているが、十分に
これが実使用状態において実行されていない。従っても
し対地アースされずに使用しているときに、水滴がカレ
ントトランス３に付着した場合、電子レンジ本体には低
圧回路の電圧が水を介して印加される。もし人がこれに
触れると感電し、人体にショックを与えるという危険な
状態となる。従って本発明のものは、カレントトランス
３め装着部であるプリント基板１にスリット４を設けて
いるため以上の様な危険な状態は発生しない。Generally, safety is ensured by connecting the main body of the microwave oven to a ground wire, but this is not fully implemented in actual use. Therefore, if water droplets adhere to the current transformer 3 during use without earthing, the voltage of the low voltage circuit will be applied to the microwave oven body through the water. If a person were to touch it, they would receive an electric shock, resulting in a dangerous situation. Therefore, in the present invention, since the slit 4 is provided in the printed circuit board 1, which is the third mounting portion of the current transformer, the above-mentioned dangerous situation does not occur.

発明の効果 以上のように本発明の電力変換装置によれば次の効果を
得ることができる。Effects of the Invention As described above, the power conversion device of the present invention provides the following effects.

（１）　　プリント基板に装着されたカレントトランス
の端子間における水の付着による漏電や感電の危険性が
な〈なシ、安全な電力供給装置が実現できる。(1) There is no risk of electrical leakage or electric shock due to water adhesion between the terminals of a current transformer mounted on a printed circuit board, and a safe power supply device can be realized.

（２）　　多量の水がカレントトランスに付着し、垂れ
てもスリットよシ流出し、端子間を水によつてつながる
ことがなくなるため、漏電や感電の危険性が発生しない
。(2) Even if a large amount of water adheres to the current transformer and drips, it will flow out through the slit, and the terminals will not be connected by water, so there will be no risk of electrical leakage or electric shock.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の一実施例を示す電力変換装置のプリン
ト基板の要部平面図、第２図は同電力変換装置のカレン
トトランスのプリント基板への装着を示す図、第３図は
カレントトランスの構成を示す構造図、第４図は同電力
変換装置の回路図、第５図は従来の電力変換装置のプリ
ント基板の要部平面図、第６図は同電力変換装置のカレ
ントトランスのプリント基板への装着を示す図である。 １・・・・・・プリント基板、３・・・・・・カレント
トランス、４・・・・・・ヌリット、６・・・・・・高
圧コンデンサ、１ｏ・・・・・・半導体スイッチング素
子、１４・・・・・・制御部、１６・・・・・・商用電
源、１７・・・・・・マグネトロン。FIG. 1 is a plan view of the main parts of a printed circuit board of a power conversion device showing an embodiment of the present invention, FIG. 2 is a diagram showing how the current transformer of the power conversion device is mounted on the printed circuit board, and FIG. Fig. 4 is a structural diagram showing the configuration of the transformer, Fig. 4 is a circuit diagram of the same power converter, Fig. 5 is a plan view of the main part of the printed circuit board of the conventional power converter, and Fig. 6 is a diagram of the current transformer of the same power converter. It is a figure which shows attachment to a printed circuit board. 1...Printed circuit board, 3...Current transformer, 4...Nurit, 6...High voltage capacitor, 1o...Semiconductor switching element, 14... Control unit, 16... Commercial power supply, 17... Magnetron.

Claims (1)

【特許請求の範囲】[Claims] 　商用電源の電力を高周波に変換するための半導体スイ
ッチング素子およびコンデンサを含む低圧回路としての
インバータ回路と、前記インバータ回路により高周波化
された電力を高圧に変換しかつ高圧を必要とするマグネ
トロンに電力を供給する高圧トランスと、前記高圧トラ
ンスの高圧側の電流を検出し電気的に非接触に信号を低
圧側に伝えるカレントトランスと、前記カレントトラン
スにより検出した信号を基にマグネトロンへの電力供給
量を制御するため、前記インバータ回路の半導体スイッ
チング素子の動作を制御する制御部と、前記インバータ
回路、前記カレントトランスおよび前記高圧トランスに
より昇圧された高圧回路の装着および電気配線をするプ
リント基板とを備え、前記プリント基板においてカレン
トトランスの高圧側と低圧側の間にスリットを設けた電
力変換装置。An inverter circuit as a low-voltage circuit including a semiconductor switching element and a capacitor for converting power from a commercial power source into high frequency, and an inverter circuit as a low-voltage circuit including a semiconductor switching element and a capacitor for converting power from a commercial power supply into high frequency, and an inverter circuit that converts the high frequency power by the inverter circuit to high voltage and supplies power to a magnetron that requires high voltage. A high-voltage transformer to supply, a current transformer that detects the current on the high-voltage side of the high-voltage transformer and electrically transmits the signal to the low-voltage side without contact, and an amount of power supplied to the magnetron based on the signal detected by the current transformer. In order to control the inverter circuit, the inverter circuit includes a control unit that controls the operation of semiconductor switching elements of the inverter circuit, and a printed circuit board that mounts and electrically wires the high voltage circuit boosted by the inverter circuit, the current transformer, and the high voltage transformer; A power conversion device in which a slit is provided between the high voltage side and the low voltage side of the current transformer in the printed circuit board.
JP2013156A 1990-01-22 1990-01-22 Power converter Expired - Fee Related JP2596157B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2013156A JP2596157B2 (en) 1990-01-22 1990-01-22 Power converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2013156A JP2596157B2 (en) 1990-01-22 1990-01-22 Power converter

Publications (2)

Publication Number Publication Date
JPH03218612A true JPH03218612A (en) 1991-09-26
JP2596157B2 JP2596157B2 (en) 1997-04-02

Family

ID=11825308

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2013156A Expired - Fee Related JP2596157B2 (en) 1990-01-22 1990-01-22 Power converter

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Country Link
JP (1) JP2596157B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003230254A (en) * 2002-01-30 2003-08-15 Matsushita Electric Ind Co Ltd Air conditioner current detection device
CN101943429A (en) * 2009-07-10 2011-01-12 乐金电子(天津)电器有限公司 Temperature sensor structure of microwave oven
JP2011204426A (en) * 2010-03-25 2011-10-13 Panasonic Corp Power supply for driving magnetron
JP2023161402A (en) * 2022-04-25 2023-11-07 パナソニックＩｐマネジメント株式会社 Mounting board, power supply device, and lighting device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003230254A (en) * 2002-01-30 2003-08-15 Matsushita Electric Ind Co Ltd Air conditioner current detection device
CN101943429A (en) * 2009-07-10 2011-01-12 乐金电子(天津)电器有限公司 Temperature sensor structure of microwave oven
JP2011204426A (en) * 2010-03-25 2011-10-13 Panasonic Corp Power supply for driving magnetron
JP2023161402A (en) * 2022-04-25 2023-11-07 パナソニックＩｐマネジメント株式会社 Mounting board, power supply device, and lighting device

Also Published As

Publication number Publication date
JP2596157B2 (en) 1997-04-02

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