JPS58136267A - Switch device - Google Patents

Switch device

Info

Publication number
JPS58136267A
JPS58136267A JP57016813A JP1681382A JPS58136267A JP S58136267 A JPS58136267 A JP S58136267A JP 57016813 A JP57016813 A JP 57016813A JP 1681382 A JP1681382 A JP 1681382A JP S58136267 A JPS58136267 A JP S58136267A
Authority
JP
Japan
Prior art keywords
transistor
output
load
voltage
circuit
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
JP57016813A
Other languages
Japanese (ja)
Inventor
Genzo Otani
大谷　元三
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 JP57016813A priority Critical patent/JPS58136267A/en
Publication of JPS58136267A publication Critical patent/JPS58136267A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
    • H02M3/33576—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0003—Details of control, feedback or regulation circuits
    • H02M1/0032—Control circuits allowing low power mode operation, e.g. in standby mode
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)
  • Electronic Switches (AREA)

Abstract

PURPOSE:To facilitate the starting of a switching regulator type power source circuit and to save the electric power by operating a swtiching transistor of open state at a light load when the load is opened or closed at the secondary side of the power source circuit. CONSTITUTION:A switching circuit having a transistor 6 is operated by connecting a power source to an input terminal 1, thereby obtaining DC output at the secondary side of a transformer 5, supplying a voltage to an oscillator 11, control circuits 10 and 26, and a load 12 is opened by the OFF state of a transistor 14. When a touch piece 20 makes contact with a human body, the transistor 14 is turned ON through the control circuit 26, thereby applying a voltage to the load 12, and the transistor 6 is controlled by comparing the oscillator 1 with the output voltage. Accordingly, when the load is opened, the transistor 6 is operated at the light load, thereby readily starting or stopping while preventing an electric shock.

Description

【発明の詳細な説明】 本発明は、スイッチングレギュレータ方式の電源回路を
用いて負荷を駆動するようにした電子機器において前記
負荷を開閉するだめのスイッチ装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a switch device for opening and closing a load in an electronic device that drives a load using a switching regulator type power supply circuit.

まず、本発明の説明に入る前にスイッチングレギュレー
タ方式電源回路の基本動作について第１図を用いて説明
する。第１図において、交流電源入力端子１を交流電源
に接続しスイッチ２を閉じるとダイオード３とコンデン
サ４によりコンデンサ４の両端に整流平滑された直流電
源電圧が発生し、この直流電圧は出カドランス５を介し
てスイッチング動作を行なうトランジスタ６のコレクタ
・エミッタに加わる。一方、このトランジスタ６のベー
スには起動回路７が接続されており、この起動回路７に
よってスイッチ２を閉じた瞬間トランジスタ６は導通し
て、出カドランス５の二次側に出力電圧が発生する。こ
の出力電圧はダイオード８とコンデンサ９により整流平
滑されコントロール回路１０１発振回路１１、負荷１２
にそれぞれ印加され、コントロール回路１０の出力はト
ランス１３を介してトランジスタ６を制御することにな
りスイッチングレギュレータとして動作を荷続する。コ
ントロール回路１ｏは、発振回路１１からのパルス出力
とダイオード８およびコンデンサ９からの直流出力電圧
を比較し、その直流出力電圧の変動に基いてトランジス
タ６の導通時間を制御して出力電圧を安定化する。First, before entering into the description of the present invention, the basic operation of a switching regulator type power supply circuit will be explained using FIG. In FIG. 1, when the AC power supply input terminal 1 is connected to the AC power supply and the switch 2 is closed, a rectified and smoothed DC power supply voltage is generated across the capacitor 4 by the diode 3 and the capacitor 4, and this DC voltage is transferred to the output transformer 5. It is applied to the collector-emitter of the transistor 6 which performs the switching operation via the . On the other hand, a starting circuit 7 is connected to the base of the transistor 6, and the moment the switch 2 is closed, the starting circuit 7 turns on the transistor 6, and an output voltage is generated on the secondary side of the output transformer 5. This output voltage is rectified and smoothed by a diode 8 and a capacitor 9, a control circuit 101, an oscillation circuit 11, and a load 12.
The output of the control circuit 10 controls the transistor 6 via the transformer 13, so that it continues to operate as a switching regulator. The control circuit 1o compares the pulse output from the oscillation circuit 11 with the DC output voltage from the diode 8 and the capacitor 9, and controls the conduction time of the transistor 6 based on fluctuations in the DC output voltage to stabilize the output voltage. do.

以上が第１図の基本動作であるが、この構成において負
荷１２をオン−オフせしめるスイッチ装置を設ける場合
、交流電源の一次側との感電防止上、トランス５の二次
側以降に設ける必要があり、かつトランジスタ６は負荷
１２のオン−オフにかかわらず常時動作状態に保ってお
く必要がある。The above is the basic operation of Fig. 1, but if a switch device is provided to turn the load 12 on and off in this configuration, it must be provided after the secondary side of the transformer 5 to prevent electric shock from contacting the primary side of the AC power supply. In addition, the transistor 6 must be kept in an operating state at all times regardless of whether the load 12 is on or off.

なぜなら、トランジスタ６を一旦遮断状態にすると、再
度スイッチ２を開路から閉路にしないと起動回路７が動
作しないためである。さらに、負荷１２がオフのときは
省電力め面からトランジスタ６は軽負荷動作の状態にす
ることが望ましい。This is because, once the transistor 6 is turned off, the starting circuit 7 will not operate unless the switch 2 is turned from open to closed again. Further, when the load 12 is off, it is desirable that the transistor 6 be in a light load operation state from the viewpoint of power saving.

本発明は上記点に鑑み、スイッチングレギュレータ方式
の電源回路を有する電子機器において、出カドランスの
二次側に電子スイッチ回路を設けて負荷をオン−オフす
るようにするとともに、上記した各条件を満足すること
のできるスイッチ装置を提供するものである。In view of the above points, the present invention provides an electronic device having a switching regulator type power supply circuit, in which an electronic switch circuit is provided on the secondary side of the output transformer to turn the load on and off, and also satisfies each of the above conditions. The present invention provides a switch device that can perform the following functions.

以下本発明の一実施例を第２図を用いて説明する。なお
、第２図において第１図と同一部品、同一ブロックには
同一番号を付している。また、起動回路下については具
体構成例を示し、コントロール回路１ｏについては第１
図ではブロック１０内のドライブトランジスタ１０１を
あらたに図示している。An embodiment of the present invention will be described below with reference to FIG. In FIG. 2, the same parts and blocks as in FIG. 1 are given the same numbers. In addition, a specific configuration example is shown for the lower part of the starting circuit, and the first one for the control circuit 1o.
In the figure, the drive transistor 101 in the block 10 is newly illustrated.

第２図ではダイオード８とコンデンサ９による整流平滑
電圧出力端と発振回路１１および負荷１２との間に直列
に制御トランジスタ１４を挿入し、またドライブトラン
ス１３の一次側の一端を抵抗１５を介して整流平滑電圧
出力端に接続し、さらにこのトランス１３の一端と抵抗
１６の接続点を抵抗１６と電源に対して逆極性のダイオ
ード１７との直列回路を介して制御トランジスタ１４の
エミッタ出力端に接続し、発振回路１１の電源端子を電
源に対して順方向のダイオード１８を介して前記制御ト
ランジスタ１４のエミッタ出力端に接続するとともに、
前記ドライブトランス１３と抵抗１５の接続点を抵抗１
９を介して発振回路１１の電源端子に接続している。そ
の一方、タッチ片２０、およびこのタッチ片２０に人体
の一部が触れると発振出力レベルが変化するところの発
振回路２１と検波回路２２と増幅回路２３とフリップフ
ロノブ回路２４とスイッチング動作を行う出力トランジ
スタ２６とよりなる制御回路２６を設け、この出力トラ
ンジスタ２５のコレクタ・エミッタを整流平滑電圧出力
端と制御トランジスタ１４のベースとの間に挿入してい
る。前記制御回路２６０基本動作は、タッチ片２０に人
体の一部が接触するたびにフリップフロップ回路２４の
出力が反転し出力トランジスタ２５をオン−オンするよ
うに働く。In FIG. 2, a control transistor 14 is inserted in series between the rectified and smoothed voltage output terminal formed by a diode 8 and a capacitor 9, and an oscillation circuit 11 and a load 12, and one end of the primary side of the drive transformer 13 is connected via a resistor 15. The connection point between one end of this transformer 13 and the resistor 16 is connected to the emitter output terminal of the control transistor 14 through a series circuit of the resistor 16 and a diode 17 having a polarity opposite to the power supply. The power supply terminal of the oscillation circuit 11 is connected to the emitter output terminal of the control transistor 14 via a diode 18 in the forward direction with respect to the power supply, and
The connection point between the drive transformer 13 and the resistor 15 is connected to the resistor 1.
It is connected to the power supply terminal of the oscillation circuit 11 via 9. On the other hand, a switching operation is performed with the touch piece 20 and the oscillation circuit 21, the detection circuit 22, the amplifier circuit 23, and the flip-flop circuit 24 whose oscillation output level changes when a part of the human body touches the touch piece 20. A control circuit 26 consisting of an output transistor 26 is provided, and the collector-emitter of the output transistor 25 is inserted between the rectified and smoothed voltage output terminal and the base of the control transistor 14. The basic operation of the control circuit 260 is to invert the output of the flip-flop circuit 24 and turn on the output transistor 25 every time a part of the human body touches the touch piece 20.

したがっていま交流電源入力端子１を交流電源に接続す
るとコンデンサ４の両端に直流電圧が発生し、この直流
電圧はトランス６を介してトランジスタ６に、また抵抗
２７を介してトランジスタ６のベースにおのおの加わり
、これによりトランジスタ６にコレクタ電流が流れると
、トランス５の三次巻線に発生する誘起電圧は抵抗２８
とコンデンサ２９の並列回路を介して同じくトランジス
タ６のベースに加わり、トランジスタ６は自励発振動作
となる。トランジスタ６の起動によりトランス５の二次
側に発生する電圧はダイオード８およびコンデンサ９に
より整流平滑されて抵抗１６、トランス１３を介してト
ランジスタ１ｏ１に、まだ抵抗１９を介して発振回路１
１に、さらにコントロール回路１０および制御回路２６
におのおの加わる。このとき制御回路２６内のトランジ
スタ２６はあらかじめ遮断状態を保つように設定されて
いるため、トランジスタ１４も遮断状態となり、しだが
って負荷１２は動作しない。このとき、通常のスイッチ
ングレギュレータ電源回路の負荷は軽くなり、このため
ダイオード８からの出力電圧は異常に高くなるのである
が、前記抵抗１５．１９として高抵抗値のものを使用す
ればトランジスタ１０１および発振回路１１は低い電圧
で動作することになり、その結果トランス１３からの二
次側出力電圧を低い電圧でトランジスタ６をコントロー
ルすることになり、トランジスタ６のコレクタには微少
電流が流れることになり、したがってトランス５からの
二次出力電圧は正規の電圧を保つことになる。Therefore, when the AC power supply input terminal 1 is connected to an AC power supply, a DC voltage is generated across the capacitor 4, and this DC voltage is applied to the transistor 6 via the transformer 6 and to the base of the transistor 6 via the resistor 27. As a result, when a collector current flows through the transistor 6, the induced voltage generated in the tertiary winding of the transformer 5 is increased by the resistor 28.
It is also applied to the base of transistor 6 via a parallel circuit of capacitor 29 and transistor 6, and transistor 6 becomes self-oscillating. The voltage generated on the secondary side of the transformer 5 by the activation of the transistor 6 is rectified and smoothed by the diode 8 and the capacitor 9, and is then sent to the transistor 1o1 via the resistor 16 and the transformer 13, and then to the oscillation circuit 1 via the resistor 19.
1, further includes a control circuit 10 and a control circuit 26.
Each one joins. At this time, since the transistor 26 in the control circuit 26 is set in advance to maintain a cut-off state, the transistor 14 also becomes cut-off, and therefore the load 12 does not operate. At this time, the load on the normal switching regulator power supply circuit becomes lighter, and therefore the output voltage from diode 8 becomes abnormally high. However, if a resistor 15.19 with a high resistance value is used, transistor 101 and The oscillation circuit 11 will operate at a low voltage, and as a result, the secondary output voltage from the transformer 13 will control the transistor 6 at a low voltage, and a small current will flow through the collector of the transistor 6. , Therefore, the secondary output voltage from the transformer 5 will maintain a normal voltage.

次に、導電性のタッチ片２０に人体の一部が触れると発
振回路２１の発振出力レベルが変化しフリップフロップ
回路２４の出力が反転するためトランジスタ２５は導通
し、この結果制御トランジスタ１４も導通し負荷１２は
動作をはじめる。これと同時にダイオード８とコンデン
サ９からの整流出力電圧はダイオード１７、抵抗１６、
トランス１３を介してトランジスタ１０１に、まだダイ
オード１８を介して発振回路１１におのおの加わるため
、抵抗１６の値を抵抗１５の値より低抵抗値に選んでお
けばトランジスタ１０１は正規の高い電圧で動作するこ
とになり、トランス１３からの出力電圧も上昇してトラ
ンジスタ６を十分に制御することができ、このように負
荷が重くなってもトランス６からの二次出力電圧は先の
軽負荷のときの電圧と同一になる。Next, when a part of the human body touches the conductive touch piece 20, the oscillation output level of the oscillation circuit 21 changes and the output of the flip-flop circuit 24 is inverted, so the transistor 25 becomes conductive, and as a result, the control transistor 14 also becomes conductive. Then the load 12 starts operating. At the same time, the rectified output voltage from diode 8 and capacitor 9 is connected to diode 17, resistor 16,
Since the voltage is applied to the transistor 101 via the transformer 13 and to the oscillation circuit 11 via the diode 18, if the value of the resistor 16 is selected to be lower than the value of the resistor 15, the transistor 101 operates at the normal high voltage. As a result, the output voltage from the transformer 13 also rises, making it possible to sufficiently control the transistor 6. Even when the load becomes heavy in this way, the secondary output voltage from the transformer 6 remains the same as when the load was light. The voltage will be the same as that of

なお、負荷１２をオフする場合には再度タッチ片２ｏに
人体の一部を接触させればよい。なお第２図において３
０は逆流防止用ダイオード、３１は高周波通過用コンデ
ンサである。Note that in order to turn off the load 12, a part of the human body may be brought into contact with the touch piece 2o again. In addition, in Figure 2, 3
0 is a backflow prevention diode, and 31 is a high frequency passing capacitor.

以上説明したように本発明によれば、スイッチングレギ
ュレータ方式の電源回路を有する機器において出カドラ
ンスの二次側において負荷への電源供給を開閉すること
ができ、またこれにより感電防止の面からも有利となり
、その実用上の効果は極めて犬なるものがある。As explained above, according to the present invention, it is possible to open and close the power supply to the load on the secondary side of the output transformer in equipment having a switching regulator type power supply circuit, and this is also advantageous in terms of preventing electric shock. Therefore, its practical effects are extremely impressive.

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

第１図はスイッチングレギュレータ方式の電源回路の回
路図、第２図は本発明の一実施例におけるスイッチ装置
の回路図である。 ３．８・・・・・・整流ダイオード、４，９・・・・・
・平滑コンデンサ１．５・・・・・・出カドランス、６
・・・・・・出力トランジスタ、１ｏ・・・・・・コン
トロール回路、１１・・・・・・発振回路、１２・・・
・・・負荷、１３・・・・・・ドライブトランス、１５
，１６，１９・・・・・・抵抗、１７．１８・・・・・
・逆流防止用ダイオード、２ｏ・・・・・・タッチ片、
２６・・・・・・制御回路。FIG. 1 is a circuit diagram of a switching regulator type power supply circuit, and FIG. 2 is a circuit diagram of a switching device according to an embodiment of the present invention. 3.8... Rectifier diode, 4,9...
・Smoothing capacitor 1.5... Output transformer, 6
...Output transistor, 1o...Control circuit, 11...Oscillation circuit, 12...
...Load, 13...Drive transformer, 15
, 16, 19... Resistance, 17.18...
・Backflow prevention diode, 2o...touch piece,
26...Control circuit.

Claims (1)

【特許請求の範囲】[Claims] 発振回路と、この発振回路の出力に同期してスイッチン
グ動作を行うトランジスタと、このトランジスタの出力
を出カドランスの一次側に加え二次側より得た電圧を整
流平滑する手段と、この手段からの直流出力電圧と発振
回路の出力を比較しその比較出力により上記トランジス
タの導通時間を制御して前記直流出力電圧を安定化させ
る手段と、前記直流電圧出力端と負荷との間に直列に挿
入されたスイッチング素子と、このスイッチング素子を
電気的にオン−オフ制御して負荷をオン−オフする電子
スイッチ部と、前記スイッチング素子がオフの際は前記
発振回路、トランジスタおよび出カドランス等より構成
されるスイッチングレギュレータ方式電源回路を軽い負
荷で動作するように制御する手段とを備えたスイッチ装
置。An oscillation circuit, a transistor that performs a switching operation in synchronization with the output of the oscillation circuit, a means for applying the output of this transistor to the primary side of the output transformer and rectifying and smoothing the voltage obtained from the secondary side, and A means for comparing the DC output voltage and the output of the oscillation circuit and controlling the conduction time of the transistor based on the comparison output to stabilize the DC output voltage, and a means inserted in series between the DC voltage output terminal and the load. a switching element, an electronic switch section that electrically controls on/off of this switching element to turn on/off a load, and when the switching element is off, the oscillation circuit, a transistor, an output transformer, etc. A switching device comprising means for controlling a switching regulator type power supply circuit to operate with a light load.
JP57016813A 1982-02-04 1982-02-04 Switch device Pending JPS58136267A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57016813A JPS58136267A (en) 1982-02-04 1982-02-04 Switch device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57016813A JPS58136267A (en) 1982-02-04 1982-02-04 Switch device

Publications (1)

Publication Number Publication Date
JPS58136267A true JPS58136267A (en) 1983-08-13

Family

ID=11926599

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57016813A Pending JPS58136267A (en) 1982-02-04 1982-02-04 Switch device

Country Status (1)

Country Link
JP (1) JPS58136267A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6233685U (en) * 1985-08-13 1987-02-27

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6233685U (en) * 1985-08-13 1987-02-27
JPH0445433Y2 (en) * 1985-08-13 1992-10-26

Similar Documents

Publication Publication Date Title
US4246634A (en) Start-up circuit for switch mode power supply
US4385347A (en) Power supply
US3801867A (en) Direct current energization of gaseous discharge
CA1123907A (en) Frequency inverter
US4687985A (en) Two terminal control switch having a main switch and a saturable current transformer whose primary winding is series connected with the main switch
JPS58136267A (en) Switch device
JPH03872Y2 (en)
JPH0227912B2 (en) CHOKURYUANTEIKADENGENSOCHI
JPS6332021B2 (en)
JPH051955Y2 (en)
KR920000753Y1 (en) Controlling circuit for relay
JP2680124B2 (en) Switching regulator power supply circuit
JPS603675Y2 (en) power supply
JPS5914825Y2 (en) Switching regulator device
JP2705018B2 (en) Discharge lamp lighting device
KR870001301Y1 (en) Power circuit
JPS5934463Y2 (en) Sewing machine operating mechanism control device
JPS6126761Y2 (en)
JPS623917Y2 (en)
JPS5838414Y2 (en) switching regulator device
JPS5828472Y2 (en) Gate trigger circuit of semiconductor controlled rectifier
JPS6019615B2 (en) Relay drive power supply circuit
JPH0244685A (en) Inverter power source for high frequency heater
JPH0315431B2 (en)
JPS6093492U (en) Switching power supply control circuit