JPS60126892U - 2 wire transmitter - Google Patents
2 wire transmitterInfo
- Publication number
- JPS60126892U JPS60126892U JP1203384U JP1203384U JPS60126892U JP S60126892 U JPS60126892 U JP S60126892U JP 1203384 U JP1203384 U JP 1203384U JP 1203384 U JP1203384 U JP 1203384U JP S60126892 U JPS60126892 U JP S60126892U
- Authority
- JP
- Japan
- Prior art keywords
- output
- wire transmitter
- transmission line
- current flowing
- duty cycle
- 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
Links
Landscapes
- Arrangements For Transmission Of Measured Signals (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
第１図は従来の２線式伝送器の一例を示す回路構成図、
第２図は本考案２線式伝送器の基本構成図、第３図、第
４図は本考案の主要部の具体的回路構成図、第５図は第
４図の動作説明図である。
１・・・変換回路、２・・・演算増幅器、３・・・出力
トランジスタ、４・・・電流−デユーティサイクル変換
回路、５・・・演算回路、Ｔ１． Ｔ２・・・出力端子
、１１，１□・・・伝送線、Ｒ′Ｌ・・・負荷、ＥＢ・
・・直流電源。Figure 1 is a circuit diagram showing an example of a conventional two-wire transmitter.
FIG. 2 is a basic configuration diagram of the two-wire transmitter of the present invention, FIGS. 3 and 4 are specific circuit configuration diagrams of the main parts of the present invention, and FIG. 5 is an explanatory diagram of the operation of FIG. 4. DESCRIPTION OF SYMBOLS 1... Conversion circuit, 2... Operational amplifier, 3... Output transistor, 4... Current-duty cycle conversion circuit, 5... Operation circuit, T1. T2...Output terminal, 11,1□...Transmission line, R'L...Load, EB・
...DC power supply.
Claims (1)
の伝送線を介して遠隔点より給電されると共に、上記伝
送線を流れる電流を測定すべきプロセス量に対応させる
ようにした２線式伝送器において、上記出力子間に接続
されて上記伝送線を２流れる電流を制御する出力トラン
ジ゛スタとミ上記゛伝送線を流れる電流をデユーティサ
イクル信号に ７変換する変換回路と、この変換回路の
デユーティサイクル信号と上記プロセス量に関連した信
号を演算しその出力で上記出力トランジスタを制御する
演算回路とを有する２線式伝送器。It has one output terminal, and is supplied with power from a remote point via two transmission lines connected to this output terminal, and the current flowing through the transmission line is made to correspond to the process quantity to be measured. In the two-wire transmitter, an output transistor is connected between the output terminals and controls the current flowing through the transmission line, and a conversion circuit converts the current flowing through the transmission line into a duty cycle signal. , a two-wire transmitter comprising a duty cycle signal of the conversion circuit and a calculation circuit that calculates a signal related to the process amount and controls the output transistor with its output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1203384U JPS60126892U (en) | 1984-01-31 | 1984-01-31 | 2 wire transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1203384U JPS60126892U (en) | 1984-01-31 | 1984-01-31 | 2 wire transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60126892U true JPS60126892U (en) | 1985-08-26 |
Family
ID=30494710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1203384U Pending JPS60126892U (en) | 1984-01-31 | 1984-01-31 | 2 wire transmitter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60126892U (en) |
-
1984
- 1984-01-31 JP JP1203384U patent/JPS60126892U/en active Pending
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