JPH0314987U - - Google Patents

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Publication number
JPH0314987U
JPH0314987U JP7458389U JP7458389U JPH0314987U JP H0314987 U JPH0314987 U JP H0314987U JP 7458389 U JP7458389 U JP 7458389U JP 7458389 U JP7458389 U JP 7458389U JP H0314987 U JPH0314987 U JP H0314987U
Authority
JP
Japan
Prior art keywords
voltage
positive
circuit
negative
secondary winding
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
JP7458389U
Other languages
Japanese (ja)
Other versions
JPH0721109Y2 (en
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 filed Critical
Priority to JP1989074583U priority Critical patent/JPH0721109Y2/en
Publication of JPH0314987U publication Critical patent/JPH0314987U/ja
Application granted granted Critical
Publication of JPH0721109Y2 publication Critical patent/JPH0721109Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Dc-Dc Converters (AREA)

Description

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

第１図は本考案の一実施例を示す回路図、第２
図は本考案の第２の実施例を示す回路図、第３図
は第２図の回路の動作を説明する波形図、第４図
は本考案の第３の実施例を示す回路図である。第
５図は従来装置の要部回路図である。 ＣＴ……カレントトランス、Ｑ……スイツチン
グ素子、Ｒ４０……電圧発生抵抗、Ｄ４１，Ｃ４
１，Ｒ４１……正電圧ホールド回路、Ｄ４２，Ｃ
４２，Ｒ４２……負電圧ホールド回路。 Figure 1 is a circuit diagram showing one embodiment of the present invention, Figure 2 is a circuit diagram showing an embodiment of the present invention.
The figure is a circuit diagram showing a second embodiment of the present invention, Fig. 3 is a waveform diagram explaining the operation of the circuit of Fig. 2, and Fig. 4 is a circuit diagram showing a third embodiment of the present invention. . FIG. 5 is a circuit diagram of the main part of the conventional device. CT...Current transformer, Q...Switching element, R40...Voltage generating resistor, D41, C4
1, R41...Positive voltage hold circuit, D42, C
42, R42...Negative voltage hold circuit.

Claims (1)

【実用新案登録請求の範囲】 直流電圧の印加される一次巻線、センタータツ
プを備えた二次巻線を有するトランスと、 この一次巻線に印加される直流電圧をプツシユ
プル動作によりスイツチングするスイツチング手
段と、 この二次巻線の一端と第１のダイオードＤ２１
を介して接続され、他端と第２のダイオードＤ２
２を介して接続される平滑化回路を有し、正電圧
＋Ｅｏを出力する正電圧出力回路と、 この二次巻線の一端と第３のダイオードＤ２３
を介して接続され、他端と第４のダイオードＤ２
４を介して接続される平滑化回路を有し、負電圧
−Ｅｏを出力する負電圧出力回路と、 を具備する正負出力電源において、 前記二次巻線の一端と第１及び第３のダイオー
ドの共通接続点の間、若しくは他端と第２及び第
４のダイオードの共通接続点の間に設けられたカ
レントトランスと、 このカレントトランスの二次巻線と並列に接続
され、前記正負電圧出力回路の出力電流に比例す
る電圧を発生する手段と、 この電圧発生手段に発生する正方向の電圧を保
持する正電圧ホールド回路と、 この電圧発生手段に発生する負方向の電圧を保
持する負電圧ホールド回路と、 を備えたことを特徴とする正負出力電源の負荷
電流検出回路。[Claims for Utility Model Registration] A transformer having a primary winding to which a DC voltage is applied and a secondary winding equipped with a center tap, and a switching device that switches the DC voltage applied to the primary winding by push-pull operation. means, one end of this secondary winding and a first diode D21
connected through the other end and the second diode D2
A positive voltage output circuit which has a smoothing circuit connected via D23 and outputs a positive voltage +Eo, and one end of this secondary winding and a third diode D23.
and the other end and the fourth diode D2
a negative voltage output circuit that outputs a negative voltage -Eo and has a smoothing circuit that is connected through a positive and negative output power source, wherein one end of the secondary winding and the first and third diodes or between the other end and the common connection point of the second and fourth diodes, and the current transformer is connected in parallel with the secondary winding of this current transformer, and the positive and negative voltage output means for generating a voltage proportional to the output current of the circuit; a positive voltage hold circuit for holding the positive voltage generated in the voltage generating means; and a negative voltage for holding the negative voltage generated in the voltage generating means. A load current detection circuit for a positive/negative output power supply, comprising a hold circuit and the following.
JP1989074583U 1989-06-26 1989-06-26 Load current detection circuit for positive and negative output power supplies Expired - Lifetime JPH0721109Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989074583U JPH0721109Y2 (en) 1989-06-26 1989-06-26 Load current detection circuit for positive and negative output power supplies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989074583U JPH0721109Y2 (en) 1989-06-26 1989-06-26 Load current detection circuit for positive and negative output power supplies

Publications (2)

Publication Number Publication Date
JPH0314987U true JPH0314987U (en) 1991-02-14
JPH0721109Y2 JPH0721109Y2 (en) 1995-05-15

Family

ID=31614400

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989074583U Expired - Lifetime JPH0721109Y2 (en) 1989-06-26 1989-06-26 Load current detection circuit for positive and negative output power supplies

Country Status (1)

Country Link
JP (1) JPH0721109Y2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003140063A (en) * 2001-10-30 2003-05-14 Fujitsu Ltd Driver of optical switch
JP2010159611A (en) * 2009-01-09 2010-07-22 Taisei Corp Concrete skeleton reinforcement method and concrete skeleton reinforcement structure

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5173226A (en) * 1974-12-21 1976-06-24 Sanken Electric Co Ltd Fukusuno shutsuryokukairoo jusuru dengensochi
JPS5827215A (en) * 1981-08-08 1983-02-17 Matsushita Electric Ind Co Ltd Overload protecting device for multi-output switching power source
JPS6099891U (en) * 1984-11-05 1985-07-08 株式会社日立製作所 DC power supply
JPS60197162A (en) * 1984-03-21 1985-10-05 Tdk Corp Switching power source
JPS6112473A (en) * 1984-06-15 1986-01-20 スローン　ヴアルヴ　カムパニー Front-section air swing-away
JPS6174281U (en) * 1984-10-23 1986-05-20
JPS6447588U (en) * 1987-09-17 1989-03-23

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5173226A (en) * 1974-12-21 1976-06-24 Sanken Electric Co Ltd Fukusuno shutsuryokukairoo jusuru dengensochi
JPS5827215A (en) * 1981-08-08 1983-02-17 Matsushita Electric Ind Co Ltd Overload protecting device for multi-output switching power source
JPS60197162A (en) * 1984-03-21 1985-10-05 Tdk Corp Switching power source
JPS6112473A (en) * 1984-06-15 1986-01-20 スローン　ヴアルヴ　カムパニー Front-section air swing-away
JPS6174281U (en) * 1984-10-23 1986-05-20
JPS6099891U (en) * 1984-11-05 1985-07-08 株式会社日立製作所 DC power supply
JPS6447588U (en) * 1987-09-17 1989-03-23

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003140063A (en) * 2001-10-30 2003-05-14 Fujitsu Ltd Driver of optical switch
JP2010159611A (en) * 2009-01-09 2010-07-22 Taisei Corp Concrete skeleton reinforcement method and concrete skeleton reinforcement structure

Also Published As

Publication number Publication date
JPH0721109Y2 (en) 1995-05-15

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