JP2003018758A - Contactless charger transformer and power supply device using the transformer - Google Patents

Contactless charger transformer and power supply device using the transformer

Info

Publication number
JP2003018758A
JP2003018758A JP2001198748A JP2001198748A JP2003018758A JP 2003018758 A JP2003018758 A JP 2003018758A JP 2001198748 A JP2001198748 A JP 2001198748A JP 2001198748 A JP2001198748 A JP 2001198748A JP 2003018758 A JP2003018758 A JP 2003018758A
Authority
JP
Japan
Prior art keywords
transformer
power supply
charging
output
charger
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
JP2001198748A
Other languages
Japanese (ja)
Other versions
JP3910807B2 (en
Inventor
Hideki Kojima
秀樹 小島
Original Assignee
Toko Inc
東光株式会社
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 Toko Inc, 東光株式会社 filed Critical Toko Inc
Priority to JP2001198748A priority Critical patent/JP3910807B2/en
Publication of JP2003018758A publication Critical patent/JP2003018758A/en
Application granted granted Critical
Publication of JP3910807B2 publication Critical patent/JP3910807B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

PROBLEM TO BE SOLVED: To provide a power supply device, which can cope with input voltage of each country, and can charge contactlessly a power source having multi- outputs and a handset; which simplifies the circuit structure, reduces the number of parts, and improves the efficiency. SOLUTION: In the power supply device for a telephone set provided with a handset and a main phone having a charger which charges the handset contactlessly, the power supply of the battery charger and a plurality of DC output power supply which is necessary for the main phone are constituted of one transformer. The transformer is arranged, by loosely connecting charger coils disposed at the ends of two magnet legs of a U-shaped core, with a plurality of output coils disposed in the magnet center.

Description

【発明の詳細な説明】Detailed Description of the Invention
【0001】[0001]
【発明の属する技術分野】本発明は、送受信機を備えた
親機と無接点充電方式を用いた子機を備えた電話機に関
し、詳しくは親機と子機に電力を供給する電源に用いる
無接点充電トランスに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone having a master unit equipped with a transceiver and a slave unit using a non-contact charging system, and more particularly to a telephone unit used as a power source for supplying power to the master unit and the slave unit. Regarding contact charging transformer.
【0002】[0002]
【従来の技術】近年、日本においては、コードレス電話
機のように親機とコードレスにした子機をセットにした
電話機が広まっている。子機の電源として充電電池が内
蔵されており、常時の充電は、無接点で充電する無接点
充電器を備えた親機により行なわれる。そして、欧州で
は、DECT規格の電話機が普及してきている。これは
回線電話と携帯電話を兼ねたもので、親機用の電源と子
機を充電する2系統の電源が必要となっている。さら
に、米国においても、同様の方式の電話機が普及し始め
てきており、ワールドワイドの入力電圧で、親機の電源
と、子機はコードレスとしてその電力供給用に接触不良
のない無接点充電器を備えた複数の出力が得られる電源
装置が要求されてきている。
2. Description of the Related Art In recent years, in Japan, a telephone having a base unit and a cordless handset as a set, such as a cordless telephone, has become widespread. A rechargeable battery is built in as a power source of the slave unit, and constant charging is performed by a master unit equipped with a contactless charger that charges in a contactless manner. In Europe, DECT standard telephones have become widespread. This doubles as a line phone and a mobile phone, and requires a power supply for the base unit and two power supplies for charging the handset. Furthermore, in the United States, telephones of similar type have started to spread, and a worldwide power supply is used as a power source for the parent device and a cordless cordless handset for supplying power to the child device, which is a contactless charger with no contact failure. There is a demand for a power supply device capable of obtaining a plurality of outputs.
【0003】つぎに、従来の電話装置における無接点充
電器を備えた電源装置のブロック図を図5に示す。図5
に示すように、親機Aにおいて、1はAC入力電源、2
は整流平滑回路、33はスイッチ回路、34はスイッチ
回路33を制御する制御回路、T2は各種電源となる主
トランス、35は各出力の整流平滑回路、36は各出力
のレギュレータ、7は送受信機、38は出力電圧を安定
化させるためのフィードバック回路(フォト・カプ
ラ)、39は子機を充電するためのスイッチ回路、40
は子機を充電するためのスイッチ回路9を制御する制御
回路(自励発振)、T3は子機を充電するための充電ト
ランス、である。子機Bは、受電トランス15、整流平
滑回路16、充電電池17で構成される。
Next, FIG. 5 shows a block diagram of a power supply device including a contactless charger in a conventional telephone device. Figure 5
As shown in FIG.
Is a rectifying / smoothing circuit, 33 is a switching circuit, 34 is a control circuit for controlling the switching circuit 33, T2 is a main transformer serving as various power supplies, 35 is a rectifying / smoothing circuit for each output, 36 is a regulator for each output, and 7 is a transceiver. , 38 is a feedback circuit (photo coupler) for stabilizing the output voltage, 39 is a switch circuit for charging the slave unit, 40
Is a control circuit (self-oscillation) for controlling the switch circuit 9 for charging the slave unit, and T3 is a charging transformer for charging the slave unit. The slave unit B includes a power receiving transformer 15, a rectifying / smoothing circuit 16, and a rechargeable battery 17.
【0004】この親機Aの電源装置は、AC入力電圧1
を整流平滑した直流出力を主トランスT2の1次側コイ
ルL1とスイッチ回路33を用いて2次側に伝送するコ
ンバータを形成する。主トランスT2の2次側コイルL
3、L4、L5から各種出力電圧に応じた直流出力をと
りだし、各々整流平滑し、レギュレータ36を通して送
受信器7に必要な複数の直流電源を供給する。また、充
電トランスT3に必要な入力電源は主トランスT2の2
次側コイルL5の出力を整流平滑したものを用いる。充
電トランスT3は充電コイルL6とスイッチ回路39に
より必要な高周波電力を電磁誘導作用により無接点で子
機Bの受電コイル15に供給する。L7は自励発振用コ
イルで制御回路40の一部となる。子機Bは親機Aの充
電トランスT3から電磁誘導で伝送された電力を受電ト
ランス15で受け、その電力を整流平滑し、充電電池1
7に供給する。
The power supply unit of the base unit A has an AC input voltage of 1
A converter for transmitting the rectified and smoothed DC output to the secondary side by using the primary side coil L1 of the main transformer T2 and the switch circuit 33 is formed. Secondary coil L of main transformer T2
Direct current outputs corresponding to various output voltages are taken out from 3, L4 and L5, rectified and smoothed respectively, and a plurality of necessary direct current power supplies are supplied to the transceiver 7 through the regulator 36. The input power required for the charging transformer T3 is 2 of the main transformer T2.
A rectified and smoothed output of the secondary coil L5 is used. The charging transformer T3 supplies high-frequency power required by the charging coil L6 and the switch circuit 39 to the power receiving coil 15 of the child device B in a contactless manner by an electromagnetic induction effect. L7 is a self-excited oscillation coil, which is a part of the control circuit 40. The slave B receives the power transmitted by electromagnetic induction from the charging transformer T3 of the master A by the power receiving transformer 15, rectifies and smoothes the power, and charges the battery 1
Supply to 7.
【0005】[0005]
【発明が解決しようとする課題】このように、従来の電
源装置は、主トランスT2に親機Aの送受信機7に必要
な複数の電源と、子機の充電に必要な電源を備え、充電
トランスT3で子機Bに電力供給するための高周波出力
をつくりだしている。このように、主トランスT2と充
電トランスT3は絶縁型トランスであるため、2つのト
ランスを直列に接続することは電源装置としての効率を
悪化させる。さらに、親機Aの送受信器7に供給する電
力も負荷変動があり、安定化させるうえで、レギュレー
タ回路36が必要となり、効率悪化の要因となる。ま
た、小型軽量化のために、スイッチング回路を採用して
も、効率悪化による放熱問題の対策のため部品点数が増
えるなどのコスト増となる。
As described above, the conventional power supply device is provided with the main transformer T2 having a plurality of power supplies required for the transceiver 7 of the parent device A and a power supply required for charging the child device, and charging The transformer T3 creates a high frequency output for supplying power to the child device B. As described above, since the main transformer T2 and the charging transformer T3 are insulation type transformers, connecting two transformers in series deteriorates the efficiency of the power supply device. Further, the electric power supplied to the transceiver 7 of the parent device A also has a load variation, which requires the regulator circuit 36 to be stabilized, which causes a deterioration in efficiency. Further, even if a switching circuit is used to reduce the size and weight, the cost such as an increase in the number of parts is taken as a measure against the heat radiation problem due to the deterioration of efficiency.
【0006】本発明は、上記問題点に鑑み、多出力を有
する電源でかつ子機の無接点充電が可能な電源をつくり
だし、回路構成を簡略化し、部品点数を減らし、かつ効
率を向上させた電源装置用の無接点充電トランスを提供
することを目的とする。また、その無接点充電トランス
を使用した電源装置を提供することを目的とする。
In view of the above problems, the present invention creates a power source having multiple outputs and capable of contactless charging of a slave unit, simplifying the circuit configuration, reducing the number of parts, and improving efficiency. An object is to provide a contactless charging transformer for a device. Moreover, it aims at providing the power supply device using the non-contact charge transformer.
【0007】[0007]
【課題を解決するための手段】本発明は、子機と、子機
に備えた充電電池を無接点で充電する充電器を有する親
機とを備えた電話器の電源装置に用いる無接点充電トラ
ンスにおいて、無接点充電トランスは親機に必要な複数
の直流出力電源と、充電器の電源とを兼ね、U字型コア
の二つの磁脚の端部に設けた充電コイルとコアの基部に
設けた複数の出力コイルとの配置を疎結合としたことを
特徴とするものである。そしてまた、その無接点充電ト
ランスを用いて形成した電源装置である。
DISCLOSURE OF THE INVENTION The present invention is a contactless charging used in a power supply unit of a telephone having a slave unit and a master unit having a charger for contactlessly charging a charging battery provided in the slave unit. In the transformer, the non-contact charging transformer doubles as the multiple DC output power supplies necessary for the master unit and the power supply for the charger, and the charging coil provided at the end of the two magnetic legs of the U-shaped core and the base of the core. It is characterized in that the arrangement with the plurality of output coils provided is loosely coupled. Further, it is a power supply device formed by using the contactless charging transformer.
【0008】[0008]
【実施例】以下、本発明の無接点充電トランスの一実施
例について、図1、図2、図3の断面模型図を用いて説
明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the contactless charging transformer of the present invention will be described below with reference to the cross-sectional schematic views of FIGS. 1, 2 and 3.
【0009】図1、図2、図3は、親機の充電トランス
とそれに対向する子機の受電トランスの断面模型図であ
る。図において、親機AはトランスT1として、充電台
としての筐体10、フェライト磁心を用いたU字型コア
11、U字型コア11の二つの磁脚に巻回した充電コイ
ル12、各種出力コイル13a、13b、自励発振用の
発振コイル14を備える。子機Bは、受電トランス15
として、筐体20、フェライト磁心を用いたU字型コア
18、U字型コアの2つの磁脚に巻線された受電コイル
19を備える。トランスT1の充電コイル12の一面
(磁脚の端面を含む)と受電トランス15の受電コイル
19の一面(磁脚の端面を含む)が互いの筐体10,2
0を挟んで対向しており、より近接するように受電側を
載置することが充電を効率をよく行ううえで重要であ
る。
FIG. 1, FIG. 2 and FIG. 3 are schematic cross-sectional views of a charging transformer of a master unit and a power receiving transformer of a slave unit facing the charging transformer. In the figure, the parent device A is a transformer T1, a casing 10 as a charging stand, a U-shaped core 11 using a ferrite core, a charging coil 12 wound around two magnetic legs of the U-shaped core 11, and various outputs. The coils 13a and 13b and the oscillation coil 14 for self-excited oscillation are provided. The handset B is the receiving transformer 15
The housing 20 includes a casing 20, a U-shaped core 18 using a ferrite magnetic core, and a power receiving coil 19 wound around two magnetic legs of the U-shaped core. One surface of the charging coil 12 of the transformer T1 (including the end surface of the magnetic leg) and one surface of the power receiving coil 19 of the power receiving transformer 15 (including the end surface of the magnetic leg) are the housings 10 and 2 of each other.
It is important to place the power receiving side so as to be closer to each other and to be closer to each other for efficient charging.
【0010】図1に示すように、U字型コア12の2つ
の磁脚の端面と充電コイル12の巻線の一面とが同一面
となるように設け、受電トランスの受電コイル19の巻
線の一面が近接するように設ける。2つの出力コイル1
3a、13bは2つの充電コイル12と疎結合となるよ
うに間隔を空けてU字型コアのそれぞれの磁脚に配置し
たものである。
As shown in FIG. 1, the end faces of the two magnetic legs of the U-shaped core 12 and one face of the winding of the charging coil 12 are provided on the same plane, and the winding of the power receiving coil 19 of the power receiving transformer is provided. It is provided so that one side of each side is close. Two output coils 1
3a and 13b are arranged on each magnetic leg of the U-shaped core at intervals so as to be loosely coupled to the two charging coils 12.
【0011】図2は、2つの出力コイル13a、13b
を2つの充電コイル12と疎結合となるように間隔を空
けてU字型コアの磁脚間を接続した磁芯の基部に配置し
たものである。
FIG. 2 shows two output coils 13a and 13b.
Are arranged at the base of the magnetic core in which the magnetic legs of the U-shaped core are connected to each other at intervals so as to be loosely coupled to the two charging coils 12.
【0012】図3は、充電コイル12の2つの巻線外周
にそれぞれ絶縁用のバリアテープ9を巻き、その外周に
出力コイル13aまたは13bを巻線し、充電コイル1
2と疎結合となるように配置したものである。
In FIG. 3, an insulating barrier tape 9 is wound around the outer circumference of each of the two windings of the charging coil 12, and an output coil 13a or 13b is wound around the outer circumference thereof.
It is arranged so as to be loosely coupled with 2.
【0013】このように、充電コイル12と出力コイル
13aおよび13bを疎結合としている。これにより、
負荷変動による出力コイルに発生する変動を少なくし、
送受信機に供給する電圧変動を小さくして、従来、設け
ていたレギュレータを省略することができる。また、自
励発振用の発振コイル14はタイミング用であり、U字
型コアの一部に配置されていればよい。
In this way, the charging coil 12 and the output coils 13a and 13b are loosely coupled. This allows
Reduces the fluctuations that occur in the output coil due to load fluctuations,
By reducing the fluctuation of the voltage supplied to the transceiver, the regulator that has been conventionally provided can be omitted. Further, the oscillation coil 14 for self-excited oscillation is for timing, and may be arranged in a part of the U-shaped core.
【0014】図4は、本発明の無接点充電トランスを用
いた電源装置のブロック図を示す。図4に示すように、
親機Aにおいて、1はAC入力電源、2は整流平滑回
路、3は非絶縁型の降圧型チョッパ回路、4はスイッチ
回路、5はスイッチ回路4を制御する制御回路、T1は
各種出力源となる絶縁型のトランス、L1は充電コイ
ル、L2は自励発振用コイル、L3,L4は2つの出力
コイル、6は2つの出力の各整流平滑回路、7は送受信
機、である。子機Bは、受電コイル15、整流平滑回路
16、充電電池17、で構成される。
FIG. 4 is a block diagram of a power supply device using the contactless charging transformer of the present invention. As shown in FIG.
In the parent device A, 1 is an AC input power source, 2 is a rectifying / smoothing circuit, 3 is a non-insulated step-down chopper circuit, 4 is a switch circuit, 5 is a control circuit for controlling the switch circuit 4, and T1 is various output sources. Is an insulating transformer, L1 is a charging coil, L2 is a self-oscillation coil, L3 and L4 are two output coils, 6 is a rectifying / smoothing circuit having two outputs, and 7 is a transceiver. The slave unit B includes a power receiving coil 15, a rectifying / smoothing circuit 16, and a rechargeable battery 17.
【0015】この電源装置の動作は、交流入力1を整流
平滑した直流電圧を、降圧型チョッパ回路3により、入
力電圧より低い一定の安定化した直流電圧をつくる。そ
して、その安定化した直流電圧を用いて、トランスT1
の充電コイルL1とスイッチ回路により、子機Bに無接
点で充電できる必要な電力を供給する充電トランスの機
能と、トランスT1の2次コイルL3、L4から送受信
機8に必要な2つの出力電圧を得る機能を果たす。L2
は自励発振用コイルであり、制御回路5と連動してスイ
ッチ回路4のタイミングを制御している。子機Bの動作
においては従来の電源装置で説明した内容と同じであ
り、同一符号とし、説明は省略する。
In the operation of this power supply device, a DC voltage obtained by rectifying and smoothing the AC input 1 is made into a constant DC voltage lower than the input voltage by the step-down chopper circuit 3. Then, using the stabilized DC voltage, the transformer T1
The function of a charging transformer that supplies the necessary electric power to the slave B by contactless charging with the charging coil L1 and the switch circuit, and the two output voltages required for the transceiver 8 from the secondary coils L3 and L4 of the transformer T1. Fulfill the function of getting. L2
Is a self-excited oscillation coil, which controls the timing of the switch circuit 4 in cooperation with the control circuit 5. The operation of the child device B is the same as that described in the conventional power supply device, and therefore the same reference numerals are used and the description thereof is omitted.
【0016】このような構成とすることにより、従来、
2つの絶縁型のトランスを用いて送受信用各種出力電源
と充電用電源を構成していたが、本発明の無接点充電ト
ランスを用いた電源装置は1つの絶縁型のトランスで2
つの機能を持たせたものである。また、降圧型チョッパ
回路を設けることにより、各国の異なった入力電圧を降
圧し、入力変動の少ない一定の電圧をトランスに供給す
ることができる。そして、送受信機用の入力電圧に対し
ても、負荷変動の影響の少ないトランス構造とすること
で、レギュレータ回路が不要となる。以上のことより、
回路を簡略化し、部品点数を大幅に低減できるととも
に、レギュレータが不要となるために効率を悪化するこ
となく、小型、軽量化することができる。
With such a structure, conventionally,
Although various output power supplies for transmission and reception and a charging power supply were configured using two insulation type transformers, the power supply device using the contactless charging transformer of the present invention is one insulation type transformer.
It has two functions. Further, by providing the step-down chopper circuit, it is possible to step down different input voltages of different countries and supply a constant voltage with less input fluctuation to the transformer. Further, by adopting a transformer structure that is less affected by load fluctuations even with respect to the input voltage for the transceiver, the regulator circuit becomes unnecessary. From the above,
The circuit can be simplified, the number of parts can be greatly reduced, and a regulator is not required, so that the size and weight can be reduced without deteriorating the efficiency.
【0017】以上、本発明の無接点充電トランスとその
トランスを用いた電源装置の実施例を述べたが、本発明
はこれらの実施例に限られるものではない。例えば、上
記実施例では、送受信機は2出力としたが、1出力以上
何出力でも可能である。また、トランスの構造はU字型
コアで示したが、I字型、T字型、ポット型、コアレス
型等でも共通である。
Although the embodiments of the non-contact charging transformer and the power supply device using the transformer of the present invention have been described above, the present invention is not limited to these embodiments. For example, although the transceiver has two outputs in the above embodiment, any number of outputs can be used. Further, the structure of the transformer is shown as a U-shaped core, but it is also common to I-shaped, T-shaped, pot-shaped, coreless, and the like.
【0018】[0018]
【発明の効果】以上述べたように、本発明の無接点充電
トランスとそのトランスを用いた電源装置は、充電コイ
ルと複数の出力コイルとの配置を疎結合とすることによ
って、負荷変動により出力コイルに発生する変動を少な
くし、送受信機に供給する電圧変動を小さくして、従
来、設けていたレギュレータを省略することができる。
かつ、充電器の電源と親機に必要な複数の直流出力電源
とを1つのトランスを用いて形成することができる。こ
のように、本発明の無接点充電トランスを用いた電源装
置は、回路構成を簡略化し、部品点数を減らしかつ効率
を向上させることができる。
As described above, in the non-contact charging transformer of the present invention and the power supply device using the transformer, the charging coil and the plurality of output coils are loosely coupled to each other, so that the output is generated due to the load fluctuation. It is possible to reduce the fluctuations that occur in the coil and the fluctuations in the voltage that is supplied to the transceiver, and to omit the conventionally provided regulator.
Moreover, the power supply of the charger and the plurality of DC output power supplies required for the parent device can be formed using one transformer. As described above, the power supply device using the non-contact charging transformer of the present invention can simplify the circuit configuration, reduce the number of parts, and improve the efficiency.
【図面の簡単な説明】[Brief description of drawings]
【図1】本発明の無接点充電トランスの一実施例である
断面模型図
FIG. 1 is a schematic sectional view showing an example of a non-contact charging transformer of the present invention.
【図2】本発明の無接点充電トランスの他の実施例であ
る断面模型図
FIG. 2 is a schematic cross-sectional view of another embodiment of the contactless charging transformer of the present invention.
【図3】本発明の無接点充電トランスの他の実施例であ
る断面模型図
FIG. 3 is a schematic sectional view showing another embodiment of the contactless charging transformer of the present invention.
【図4】本発明の無接点充電トランスを用いた電源装置
の一実施例であるブロック図
FIG. 4 is a block diagram showing an embodiment of a power supply device using the contactless charging transformer of the present invention.
【図5】従来の多出力型電源装置のブロック図FIG. 5 is a block diagram of a conventional multi-output power supply device.
【符号の説明】[Explanation of symbols]
T1 トランス 11、18 コア 12 充電コイル 13a、13b 出力コイル 14 発振コイル 15 受電トランス 19 受電コイル 10,20 筐体 T1 transformer 11, 18 core 12 charging coil 13a, 13b output coil 14 Oscillation coil 15 Power receiving transformer 19 Power receiving coil 10, 20 housing
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 FI テーマコート゛(参考) H04M 1/725 H01F 23/00 B Fターム(参考) 5G003 AA01 BA01 DA04 GB04 GB08 5H730 AA14 AS17 BB03 BB21 BB52 CC01 EE02 EE73 EE78 FG07 ZZ16 5K027 AA12 BB14 GG05 MM00 5K067 AA42 BB08 KK06 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) H04M 1/725 H01F 23/00 BF term (reference) 5G003 AA01 BA01 DA04 GB04 GB08 5H730 AA14 AS17 BB03 BB21 BB52 CC01 EE02 EE73 EE78 FG07 ZZ16 5K027 AA12 BB14 GG05 MM00 5K067 AA42 BB08 KK06

Claims (3)

    【特許請求の範囲】[Claims]
  1. 【請求項1】子機と、子機に備えた充電電池を無接点で
    充電する充電器を有する親機とを備えた電話機の電源装
    置に用いる無接点充電トランスにおいて、該無接点充電
    トランスは、該親機に必要な複数の直流出力電源と該充
    電器の電源とを兼ねたもので、U字型コアの二つの磁脚
    の端部に設けた充電コイルとコアの基部に設けた複数の
    出力コイルとの配置を疎結合としたことを特徴とする無
    接点充電トランス。
    1. A non-contact charging transformer used in a power supply device of a telephone having a slave unit and a master unit having a charger for charging a rechargeable battery provided in the slave unit in a non-contact manner. , A plurality of DC output power supplies required for the parent device and a power supply for the charger, and a plurality of charging coils provided at the ends of the two magnetic legs of the U-shaped core and a plurality provided at the base of the core. The contactless charging transformer is characterized in that the output coil and the output coil are loosely coupled.
  2. 【請求項2】前記トランスはI字型コア、T字型コア、
    ポット型コア等を用いることを特徴とする請求項1記載
    の無接点充電トランス。
    2. The transformer is an I-shaped core, a T-shaped core,
    The contactless charging transformer according to claim 1, wherein a pot type core or the like is used.
  3. 【請求項3】子機と、子機を無接点で充電する充電器を
    有する親機とを備えた電話機の電源装置において、該親
    機に必要な複数の直流出力電源と該充電器の電源とを請
    求項1の無接点充電トランスを用いて形成したことを特
    徴とする電話器の電源装置。
    3. A power supply device for a telephone having a slave unit and a master unit having a charger for charging the slave unit in a non-contact manner, wherein a plurality of DC output power supplies required for the master unit and a power source for the charger are provided. A power supply device for a telephone set, characterized in that: is formed by using the contactless charging transformer according to claim 1.
JP2001198748A 2001-06-29 2001-06-29 Power supply Active JP3910807B2 (en)

Priority Applications (1)

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JP2003018758A true JP2003018758A (en) 2003-01-17
JP3910807B2 JP3910807B2 (en) 2007-04-25

Family

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Country Link
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005329226A (en) * 2004-03-12 2005-12-02 Tokyo Univ Of Science Medical care device equipped with embeddable driving section, and its power source controlling method
JP2008079380A (en) * 2006-09-19 2008-04-03 Murata Mfg Co Ltd Power supply unit and power supply system
JP2008113548A (en) * 2006-10-04 2008-05-15 Denso Corp Two transformer dc-dc converter
US7791311B2 (en) 2005-10-24 2010-09-07 Samsung Electronics Co., Ltd. Apparatus and method of wirelessly sharing power by inductive method
WO2013030648A1 (en) 2011-08-29 2013-03-07 Toyota Jidosha Kabushiki Kaisha Mobile terminal charging system and mobile terminal charging method
CN104079186A (en) * 2014-07-22 2014-10-01 上海航天电子通讯设备研究所 Visible light communication power supply system

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JPS63192213A (en) * 1987-02-05 1988-08-09 Shoichi Nakamura Power transmission device
JPH0241084A (en) * 1988-07-30 1990-02-09 Sony Corp Switching power supply device
JPH04296178A (en) * 1991-03-26 1992-10-20 Mitsubishi Electric Corp Power supply circuit for audio output circuit of television receiver
JPH1014124A (en) * 1996-06-19 1998-01-16 Tdk Corp Noncontact power transmitter
JPH11122832A (en) * 1997-10-07 1999-04-30 Casio Comput Co Ltd Charger
JPH11506646A (en) * 1995-06-07 1999-06-15 サルザー インターメディクス インコーポレーテッド Transdermal energy transmission circuit for implantable medical devices
JP2000209786A (en) * 1999-01-18 2000-07-28 Hitachi Ltd Charging/discharging device for electric power storing means and manufacture of electric power storing means using the same

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Publication number Priority date Publication date Assignee Title
JPS63192213A (en) * 1987-02-05 1988-08-09 Shoichi Nakamura Power transmission device
JPH0241084A (en) * 1988-07-30 1990-02-09 Sony Corp Switching power supply device
JPH04296178A (en) * 1991-03-26 1992-10-20 Mitsubishi Electric Corp Power supply circuit for audio output circuit of television receiver
JPH11506646A (en) * 1995-06-07 1999-06-15 サルザー インターメディクス インコーポレーテッド Transdermal energy transmission circuit for implantable medical devices
JPH1014124A (en) * 1996-06-19 1998-01-16 Tdk Corp Noncontact power transmitter
JPH11122832A (en) * 1997-10-07 1999-04-30 Casio Comput Co Ltd Charger
JP2000209786A (en) * 1999-01-18 2000-07-28 Hitachi Ltd Charging/discharging device for electric power storing means and manufacture of electric power storing means using the same

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005329226A (en) * 2004-03-12 2005-12-02 Tokyo Univ Of Science Medical care device equipped with embeddable driving section, and its power source controlling method
JP4534026B2 (en) * 2004-03-12 2010-09-01 学校法人東京理科大学 Medical device including implantable drive unit and power supply control method thereof
US7791311B2 (en) 2005-10-24 2010-09-07 Samsung Electronics Co., Ltd. Apparatus and method of wirelessly sharing power by inductive method
JP2008079380A (en) * 2006-09-19 2008-04-03 Murata Mfg Co Ltd Power supply unit and power supply system
JP2008113548A (en) * 2006-10-04 2008-05-15 Denso Corp Two transformer dc-dc converter
WO2013030648A1 (en) 2011-08-29 2013-03-07 Toyota Jidosha Kabushiki Kaisha Mobile terminal charging system and mobile terminal charging method
CN104079186A (en) * 2014-07-22 2014-10-01 上海航天电子通讯设备研究所 Visible light communication power supply system

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