JPS5816513A - Switching power supply - Google Patents

Switching power supply

Info

Publication number
JPS5816513A
JPS5816513A JP56114374A JP11437481A JPS5816513A JP S5816513 A JPS5816513 A JP S5816513A JP 56114374 A JP56114374 A JP 56114374A JP 11437481 A JP11437481 A JP 11437481A JP S5816513 A JPS5816513 A JP S5816513A
Authority
JP
Japan
Prior art keywords
winding
power supply
transformer
primary winding
turns
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
Application number
JP56114374A
Other languages
Japanese (ja)
Inventor
Tsunehide Takahashi
恒秀 高橋
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP56114374A priority Critical patent/JPS5816513A/en
Priority to IT22560/82A priority patent/IT1198402B/en
Publication of JPS5816513A publication Critical patent/JPS5816513A/en
Pending legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/21—Esters, e.g. nitroglycerine, selenocyanates
    • A61K31/215—Esters, e.g. nitroglycerine, selenocyanates of carboxylic acids
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/0006—Printed inductances
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D209/00—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
    • C07D209/02—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom condensed with one carbocyclic ring
    • C07D209/04—Indoles; Hydrogenated indoles
    • C07D209/10—Indoles; Hydrogenated indoles with substituted hydrocarbon radicals attached to carbon atoms of the hetero ring
    • C07D209/18—Radicals substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
    • C07D209/26—Radicals substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals with an acyl radical attached to the ring nitrogen atom
    • C07D209/28—1-(4-Chlorobenzoyl)-2-methyl-indolyl-3-acetic acid, substituted in position 5 by an oxygen or nitrogen atom; Esters thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/40—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil
    • A61K31/403—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil condensed with carbocyclic rings, e.g. carbazole
    • A61K31/404—Indoles, e.g. pindolol
    • A61K31/405—Indole-alkanecarboxylic acids; Derivatives thereof, e.g. tryptophan, indomethacin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/10—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with ester groups or with a carbon-halogen bond
    • C07C67/11—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with ester groups or with a carbon-halogen bond being mineral ester groups
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/14—Preparation of carboxylic acid esters from carboxylic acid halides
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
    • C07C69/612—Esters of carboxylic acids having a carboxyl group bound to an acyclic carbon atom and having a six-membered aromatic ring in the acid moiety
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
    • C07C69/76—Esters of carboxylic acids having a carboxyl group bound to a carbon atom of a six-membered aromatic ring
    • C07C69/84—Esters of carboxylic acids having a carboxyl group bound to a carbon atom of a six-membered aromatic ring of monocyclic hydroxy carboxylic acids, the hydroxy groups and the carboxyl groups of which are bound to carbon atoms of a six-membered aromatic ring
    • C07C69/86—Esters of carboxylic acids having a carboxyl group bound to a carbon atom of a six-membered aromatic ring of monocyclic hydroxy carboxylic acids, the hydroxy groups and the carboxyl groups of which are bound to carbon atoms of a six-membered aromatic ring with esterified hydroxyl groups
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D209/00—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
    • C07D209/02—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom condensed with one carbocyclic ring
    • C07D209/04—Indoles; Hydrogenated indoles
    • C07D209/10—Indoles; Hydrogenated indoles with substituted hydrocarbon radicals attached to carbon atoms of the hetero ring
    • C07D209/18—Radicals substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
    • C07D209/26—Radicals substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals with an acyl radical attached to the ring nitrogen atom
    • 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
    • H05K1/16—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor
    • 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
    • H05K1/182—Printed circuits structurally associated with non-printed electric components associated with components mounted in the printed circuit board, e.g. insert mounted components [IMC]

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Animal Behavior & Ethology (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Epidemiology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Rheumatology (AREA)
  • Pain & Pain Management (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Emergency Medicine (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)

Abstract

PURPOSE:To provide a switching power supply being smaller in size and weight, and being simple in assembling process, by a method wherein a power supply circuit is arranged in a plated printed circuit, and one winding, which is less in turns, of the transformer windings is pattern-formed on the printed plated circuit. CONSTITUTION:A printed plate 1 is provided with a transformer 2. A bobbin 4 is wound by secondary winding 6 only, whose starting-terminal 6a and ending- terminal 6b are connected to a pin 8, respectively. On the other hand, a primary winding having less turns than the secondary winding is formed by copper foil on the printed plate 1 as a primary winding pattern 10. Further, a U-shaped portion of a core 3 of the transformer 2 is provided through the printed plated circuit 1, having an insulating sheet 11 between the bottom of the core 3 and the primary winding pattern 10.

Description

【発明の詳細な説明】 本発明は入力に直流電源を用い、この直流電源を高周波
で・スイッチングすることによシ、直流電源に接続され
たトランスの１次巻線を駆動し、２次巻線より出力電圧
を得るスイッチング電源装置に関するものであり、特に
この種装置において、装置の小型軽食化、組立工程の短
縮化を目的とした亀のである。Detailed Description of the Invention The present invention uses a DC power supply as an input, and by switching this DC power supply at high frequency, drives the primary winding of a transformer connected to the DC power supply, and drives the secondary winding. This invention relates to a switching power supply device that obtains an output voltage from a line, and is particularly aimed at making the device smaller and lighter and shortening the assembly process.

従来、この種スイッチング電源装置においては、トラン
ジスタ、ダイオード、コンデンサ等の回路部品はプリン
ト基板に取り付け、トランスはコアに設けたボビンに１
次巻線、２次巻線をそれぞれ巻回すると共に、この巻線
端子をボビンに立てたピンを介してプリント基板上の回
路部品と電気的に接続することによシ、全体が構成され
るように力っていた。Conventionally, in this type of switching power supply, circuit components such as transistors, diodes, and capacitors are mounted on a printed circuit board, and the transformer is mounted on a bobbin installed in the core.
The entire structure is constructed by winding the secondary winding and the secondary winding, and electrically connecting the winding terminals to the circuit components on the printed circuit board via pins set on the bobbin. He was so strong.

この従来装置の要部を第１図（ａ）、（ｂ）に基づき簡
単に説明すると、同図（ａ）は一部切欠要部平面図であ
り、□プリント基板１上にはトランス２が固定的に２次
巻線６を巻回する積層式のものである。７Ｆｉ１次巻線
５．２次巻線６間に介在する絶縁部材である。そしてこ
れら、１次巻線５０巻始端子５８１巻終端子５ｂ、及び
２次巻線６の巻始端子６ａ、巻終端子６ｂは複数のビン
８にそれぞれ接続　・されている。同図色）は要部断面
図であシ、ビン８は図の様にプリント基板１上に立てら
れており、このプリント基板１の配線パターン９と電気
的に接続されている。The main parts of this conventional device will be briefly explained based on FIGS. 1(a) and 1(b). FIG. 1(a) is a partially cutaway plan view of the main part. It is a laminated type in which the secondary winding 6 is fixedly wound. This is an insulating member interposed between the 7Fi primary winding 5 and the secondary winding 6. These primary winding 50 winding start terminal 581 winding end terminal 5b, and the secondary winding 6 winding start terminal 6a and winding end terminal 6b are connected to a plurality of bins 8, respectively. Figure (color) is a cross-sectional view of the main part. As shown in the figure, the bottle 8 is placed on a printed circuit board 1 and is electrically connected to a wiring pattern 9 on the printed circuit board 1.

この様に構成された従来例ではトランスのコイル端末の
処理作業に時間がかかシ、またこの端末を処理するビン
の本数も多く、ビンを立てる必要からボビンの形状も複
雑と々る等、金属化、ビン化によるコスト高はさけられ
ないものであった。In the conventional example configured in this way, it takes time to process the coil terminals of the transformer, and there are a large number of bins to process the terminals, and the shape of the bobbin is complicated because the bins have to be erected. Higher costs due to metalization and bottleization were unavoidable.

また、プリント基板に対してトラ、ンス自体が大型であ
る為、全体として装置が大型化してしまい、用途が狭ば
められているという欠点もあった。In addition, since the transformer itself is large compared to the printed circuit board, the device as a whole becomes large and its applications are narrowed down.

もつとも、当山願人の出願に係る特開昭５４−１１０４
２４号の如く、トランスの小型化を計るために１次側コ
イル、２次側コイルを共に非磁性絶縁基板に導電体の渦
巻状パターンとして形成するととはすでに提案されてい
る。However, Japanese Patent Application Laid-Open No. 1104-1989, which was filed by applicant Toyama,
As in No. 24, it has already been proposed to form both the primary coil and the secondary coil as spiral patterns of conductors on a non-magnetic insulating substrate in order to reduce the size of the transformer.

しかしながら、プリントパターンで構成でき′るコイル
はターン数に限界があり、例えば２次側コイルから高出
力を得ようとする場合等は適用し得ないものであった。However, coils that can be constructed from printed patterns have a limited number of turns, and cannot be used, for example, when trying to obtain high output from a secondary coil.

本発明は以上の様な従来例に鑑みて々されたものである
。The present invention has been made in view of the above-mentioned conventional examples.

以下第２図以下の実施例に基づいて説明する。The following description will be made based on the embodiments shown in FIG. 2 and below.

尚、図面上従来例と同一個所は同一符号とする。In the drawings, the same parts as in the conventional example are given the same reference numerals.

第２図（ａ）は要部底面図であり、プリント基板１には
同図（ｂ）で説明する様な取付は構造でトランス２が設
けてあシ、ボビン４には２次巻線６のみが巻回されてお
り、巻始端子６ａ、巻終端子６ｂはそれぞれビン８に従
来通シ接続されている。一方ターン数が２次巻線より少
ないこの場合の１次巻線は銅箔にて前記プリント基板１
上に１次巻線パターン１０としてパターン形成されてい
る。FIG. 2(a) is a bottom view of the main parts.The printed circuit board 1 has a mounting structure as explained in FIG. 2(b), and the transformer 2 is installed on the bobbin 4. The winding start terminal 6a and the winding end terminal 6b are each conventionally connected to the bin 8. On the other hand, the primary winding in this case, which has fewer turns than the secondary winding, is made of copper foil on the printed circuit board 1.
A pattern is formed thereon as a primary winding pattern 10.

同図（ｂ）＃ｉ要部縦断面図であり、前記コア３のコ状
部は図の如くプリント基板１を貫通して設けてあり、こ
のコア３の下辺部と前記１次巻線パターン１００間には
絶縁シート１１が介在しである。(b) #i is a longitudinal cross-sectional view of the main part of the same figure, and the U-shaped part of the core 3 is provided through the printed circuit board 1 as shown in the figure, and the lower side part of this core 3 and the primary winding pattern An insulating sheet 11 is interposed between the parts 100.

また前記１次巻線パターン１ｏの端子１０ａ、１０ｂは
ジャンパー線１２を介しであるいは直接前記配線パター
ンに接続されている。Further, terminals 10a and 10b of the primary winding pattern 1o are connected to the wiring pattern via a jumper wire 12 or directly.

今、Ｍ２図に示す装置χ例えば入力源直流２０ｖ１出力
定格直流４００Ｖ、５０μＡの複写機の現像バイアス電
源として用い、トランスの駆動周波数を１００ｋＨｚと
すると、１次巻線が５ターン、２次巻線が１００ターン
となる。そして前記プリント基板１の厚みを３５ミクロ
ンとすると前記１次巻線パターン１０の導電体の幅は０
．６　ミリメートル程度でアシ、結局５ターン程の場合
はプリント基板上にパターン形成することが出来ること
になる。この場合２次巻線６は作業性を考慮して線径０
．０５ミリメートルのものがボビンに巻回される。Now, if the device χ shown in diagram M2 is used as a developing bias power supply for a copying machine, for example, input source DC 20V, output rated DC 400V, 50μA, and the drive frequency of the transformer is 100kHz, the primary winding will have 5 turns, and the secondary winding will have 5 turns. becomes 100 turns. If the thickness of the printed circuit board 1 is 35 microns, the width of the conductor of the primary winding pattern 10 is 0.
．． If the reed is about 6 mm, and after all, it is about 5 turns, it will be possible to form a pattern on the printed circuit board. In this case, the secondary winding 6 has a wire diameter of 0 in consideration of workability.
．． 05 mm is wound onto the bobbin.

第３図は本装置に係る回路図の一例を示すものであり、
前記トランス２の１次側には直流電源が印加されるよう
になっておシ、制御回路１３によってスイッチング周波
敷金変化させられる駆動部１４が１次巻線パターン１０
に直列に接続しである。制御回路１３としては例えばパ
ルス幅肇駅用のスイッチングレギュレータＩＣが用いら
れ、駆動部１４はトランジスタでよい。２次側にはダイ
オードＤ１、コンデンサＣ１からなる出力整流回路１５
が設けられ、またフィードバック用の３次巻線１６には
ダイオードＤ２、コンデンサＣ２、可変倶抗Ｒからなる
平滑回路１７を設け、これよシフイードバック信号を前
記制御回路１３に加えるようにしている。FIG. 3 shows an example of a circuit diagram related to this device,
A DC power source is applied to the primary side of the transformer 2, and a driving section 14 whose switching frequency is changed by a control circuit 13 is connected to the primary winding pattern 10.
Connect in series with. As the control circuit 13, for example, a switching regulator IC for changing the pulse width may be used, and the drive section 14 may be a transistor. On the secondary side, there is an output rectifier circuit 15 consisting of a diode D1 and a capacitor C1.
Further, the tertiary winding 16 for feedback is provided with a smoothing circuit 17 consisting of a diode D2, a capacitor C2, and a variable resistor R, which applies a shifted feedback signal to the control circuit 13.

そしてこのことにより出力電圧の安定化を計っている。This stabilizes the output voltage.

この３次巻線１６は通常１次巻線より少ないターン数で
あるから、この様に３次巻線を用いるものにおいてはこ
の３次巻線も１次巻線と同様にパターン形成することが
出来る。This tertiary winding 16 usually has fewer turns than the primary winding, so in a device that uses a tertiary winding like this, the tertiary winding can also be patterned in the same way as the primary winding. I can do it.

本発明は小電力用スイッチング電源に適用出来るもので
−あυ、今までは昇圧型トランスの場合について説明し
て来たが、降圧型トランスを用いた場合は逆に２次巻線
をパターン形成すれば良い。The present invention can be applied to low-power switching power supplies. So far, we have explained the case of a step-up transformer, but when a step-down transformer is used, the pattern of the secondary winding can be formed conversely. Just do it.

本発明は以上の通シ、スイッチング電源装置を構成する
に当り、トランスに高周波を与えることによシ、プリン
ト基板にパターン形成がなされるようなターン数を得、
これをパターン形成することにしたものであるから所期
の目的はことごとく達成することが出来るものである。According to the present invention, in configuring the switching power supply device, by applying a high frequency to the transformer, a number of turns can be obtained such that a pattern can be formed on the printed circuit board,
Since this was decided to be patterned, all of the intended objectives can be achieved.

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

第１図（ａ）、（ｂ）は従来装置の要部平面図、要部縦
断面図をそれぞれ示し、第２図（ａ）、（ｂ）は本発明
や一実施例の要部平面図、要部縦断面図をそれぞれ示し
、第３図は一実施例の回路図である。 １・・・・・・プリント基板、２・・・・・・トランス
、６・・・・・・２次巻線、１０・・・・・・１次巻線
パターン。 ア−５広FIGS. 1(a) and (b) show a plan view of the main part and a vertical sectional view of the main part of a conventional device, respectively, and FIGS. 2(a) and (b) are a plan view of the main part of the present invention and an embodiment. , respectively, and FIG. 3 is a circuit diagram of one embodiment. 1...Printed circuit board, 2...Transformer, 6...Secondary winding, 10...Primary winding pattern. A-5 wide

Claims (3)

【特許請求の範囲】[Claims] （１）直流電源を利用し、トランスを高周波駆動して２
次巻線より出力を得るものにおいて、装置を構成する回
路部品をプリント基板に配電すると共に、トランスの巻
線のうちターン数の少ない方をプリント基板にパターン
形成したことを特徴とするスイッチング電源装置。(1) Use a DC power source to drive the transformer at high frequency.
A switching power supply device that obtains output from the next winding, and is characterized in that power is distributed to the circuit components constituting the device on a printed circuit board, and that the transformer winding with a smaller number of turns is patterned on the printed circuit board. . （２）１０ターン以下の１次巻線をパターン形成したこ
とを特徴とする特許請求の範囲第１項記載のスイッチン
グ電源装置。(2) The switching power supply device according to claim 1, characterized in that the primary winding is patterned to have 10 turns or less. （３）１次巻線のターン数以下の３次巻線をもパターン
形成したことを特徴とする特許請求の範囲第１項又は第
２項記載のスイッチング電源装置。(3) The switching power supply device according to claim 1 or 2, wherein the tertiary winding is also patterned in a number of turns less than that of the primary winding.
JP56114374A 1981-07-23 1981-07-23 Switching power supply Pending JPS5816513A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP56114374A JPS5816513A (en) 1981-07-23 1981-07-23 Switching power supply
IT22560/82A IT1198402B (en) 1981-07-23 1982-07-23 POLYPRENYL COMPOUNDS, PROCESS FOR THE PRODUCTION OF THE SAME AND MEDICINES CONTAINING THE SAME

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56114374A JPS5816513A (en) 1981-07-23 1981-07-23 Switching power supply

Publications (1)

Publication Number Publication Date
JPS5816513A true JPS5816513A (en) 1983-01-31

Family

ID=14636090

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56114374A Pending JPS5816513A (en) 1981-07-23 1981-07-23 Switching power supply

Country Status (2)

Country Link
JP (1) JPS5816513A (en)
IT (1) IT1198402B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101222974B1 (en) * 2006-06-01 2013-01-17 엘지디스플레이 주식회사 a inverter for a liquid crystal display device and liquid crystal display device module using the same
JP2013171933A (en) * 2012-02-20 2013-09-02 Shindengen Electric Mfg Co Ltd Thin transformer
JP2013175654A (en) * 2012-02-27 2013-09-05 Shindengen Electric Mfg Co Ltd Thin transformer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101222974B1 (en) * 2006-06-01 2013-01-17 엘지디스플레이 주식회사 a inverter for a liquid crystal display device and liquid crystal display device module using the same
JP2013171933A (en) * 2012-02-20 2013-09-02 Shindengen Electric Mfg Co Ltd Thin transformer
JP2013175654A (en) * 2012-02-27 2013-09-05 Shindengen Electric Mfg Co Ltd Thin transformer

Also Published As

Publication number Publication date
IT1198402B (en) 1988-12-21
IT8222560A1 (en) 1984-01-23
IT8222560A0 (en) 1982-07-23

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