JPS59159017U - isolation amplifier - Google Patents

isolation amplifier

Info

Publication number
JPS59159017U
JPS59159017U JP19392283U JP19392283U JPS59159017U JP S59159017 U JPS59159017 U JP S59159017U JP 19392283 U JP19392283 U JP 19392283U JP 19392283 U JP19392283 U JP 19392283U JP S59159017 U JPS59159017 U JP S59159017U
Authority
JP
Japan
Prior art keywords
signal
output terminal
amplifier
pulse width
width modulation
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
JP19392283U
Other languages
Japanese (ja)
Other versions
JPS6012332Y2 (en
Inventor
田辺　共之
小熊　良雄
貞夫 山本
敏秋 塚田
Original Assignee
横河電機株式会社
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 横河電機株式会社 filed Critical 横河電機株式会社
Priority to JP19392283U priority Critical patent/JPS6012332Y2/en
Publication of JPS59159017U publication Critical patent/JPS59159017U/en
Application granted granted Critical
Publication of JPS6012332Y2 publication Critical patent/JPS6012332Y2/en
Expired legal-status Critical Current

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  • Amplifiers (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

第１図は本発明に係るアイソレーション・アンプの一実
施例を示す電気的接続図、第２図および第３図はそれぞ
れ第１図のアンプの動作を説明するための波形図、第４
図は従来のフィルタの一例の電気的接続図である。FIG. 1 is an electrical connection diagram showing one embodiment of the isolation amplifier according to the present invention, FIGS. 2 and 3 are waveform diagrams for explaining the operation of the amplifier shown in FIG. 1, and FIG.
The figure is an electrical connection diagram of an example of a conventional filter.

Claims (1)

【実用新案登録請求の範囲】 （１）入力信号をパルス幅信号に変調するパルス幅変調
回路と、このパルス幅変調回路の出力信号を発光素子と
受光素子よりなる光結合器によってアイソレーションし
て伝送する伝送回路と、その人、出力端子間にコンデン
サが接続された第１の増幅器の出力端を増幅率が一定の
第２の増幅器を介して信号出力端子に接続するとともに
抵抗を介して第１の増幅器の入力端に帰還するようにし
たフィルタを有すると共に正および負の基準電源を有し
、伝送回路を介して得られる前記パルス幅変調回路によ
って得られるパルス幅変調信号で駆動されるスイッチに
より交互に正または負の基準電源の出力を切換えて前記
−フィルタに入力させる復調回路とを具備し、前記フィ
ルタの信号出力端よりアイソレーションされた信号を取
出すようにしたアイソレーショ請求範囲第１項記載のア
イソレーション・アンプ。 （３）　　基準電源として電流源を用いた実用新案登録
゛　　請求範囲第１項記載のアイソレーション・アンプ
。[Claims for Utility Model Registration] (1) A pulse width modulation circuit that modulates an input signal into a pulse width signal, and the output signal of this pulse width modulation circuit is isolated by an optical coupler consisting of a light emitting element and a light receiving element. The output terminal of the first amplifier, which has a capacitor connected between the transmission circuit and the output terminal, is connected to the signal output terminal via a second amplifier with a constant amplification factor, and the output terminal of the first amplifier is connected to the signal output terminal via a resistor. a switch that has a filter configured to feed back to the input end of the amplifier of No. 1, has positive and negative reference power supplies, and is driven by a pulse width modulation signal obtained by the pulse width modulation circuit obtained through a transmission circuit. and a demodulation circuit that alternately switches the output of a positive or negative reference power source and inputs it to the filter, and extracts the isolated signal from the signal output terminal of the filter. Isolation amplifier described in section. (3) Registration of a utility model using a current source as a reference power source. The isolation amplifier according to claim 1.
JP19392283U 1983-12-16 1983-12-16 isolation amplifier Expired JPS6012332Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19392283U JPS6012332Y2 (en) 1983-12-16 1983-12-16 isolation amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19392283U JPS6012332Y2 (en) 1983-12-16 1983-12-16 isolation amplifier

Publications (2)

Publication Number Publication Date
JPS59159017U true JPS59159017U (en) 1984-10-25
JPS6012332Y2 JPS6012332Y2 (en) 1985-04-22

Family

ID=30416972

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19392283U Expired JPS6012332Y2 (en) 1983-12-16 1983-12-16 isolation amplifier

Country Status (1)

Country Link
JP (1) JPS6012332Y2 (en)

Also Published As

Publication number Publication date
JPS6012332Y2 (en) 1985-04-22

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