JPH0334197U - - Google Patents
Info
- Publication number
- JPH0334197U JPH0334197U JP9466889U JP9466889U JPH0334197U JP H0334197 U JPH0334197 U JP H0334197U JP 9466889 U JP9466889 U JP 9466889U JP 9466889 U JP9466889 U JP 9466889U JP H0334197 U JPH0334197 U JP H0334197U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- converted
- voltage
- transmission line
- wire
- 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
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000006641 stabilisation Effects 0.000 claims description 2
- 238000011105 stabilization Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
Description
第１図は本考案の１実施例の構成を示す回路図
、第２図は本考案の他の実施例の構成を示す回路
図、第３図は従来の２線式計器の構成の概要を示
す構成図、第４図は第３図に示す２線式計器の電
源回路の具体的な構成を示す回路図、第５図は第
３図に示す２線式計器の問題点を説明する等価回
路図である。
１０……２線式計器、１１……負荷、１２……
直流電源、１本考案……マイクロプロセツサ、１
４……直流／直流変換回路、１５……アナログ回
路、１７……直流安定化回路。
Figure 1 is a circuit diagram showing the configuration of one embodiment of the present invention, Figure 2 is a circuit diagram showing the configuration of another embodiment of the present invention, and Figure 3 is an overview of the configuration of a conventional two-wire meter. 4 is a circuit diagram showing the specific configuration of the power supply circuit of the 2-wire meter shown in FIG. 3, and FIG. 5 is an equivalent circuit diagram illustrating the problems of the 2-wire meter shown in FIG. 3. It is a circuit diagram. 10...2-wire meter, 11...load, 12...
Invented one DC power supply... microprocessor, one
4...DC/DC conversion circuit, 15... Analog circuit, 17... DC stabilization circuit.
Claims (1)
受けて測定すべき物理量を電気信号に変換しこれ
をマイクロプロセツサにより信号処理をして前記
伝送線を介して前記負荷に電流信号として伝送す
る２線式計器の電源回路において、前記伝送線の
両端に発生する電圧を直流／直流変換回路で電圧
レベルを変換した変換電圧を直流安定化回路を介
して定電圧としてこの定電圧を前記マイクロプロ
セツサを含む回路の回路電圧として使用すること
を特徴とする２線式計器の電源回路。 Power is supplied from the load side via a two-wire transmission line, and the physical quantity to be measured is converted into an electrical signal, which is processed by a microprocessor and sent as a current signal to the load via the transmission line. In the power supply circuit of a two-wire meter that transmits data, the voltage generated at both ends of the transmission line is converted to a voltage level by a DC/DC conversion circuit, and the converted voltage is converted into a constant voltage via a DC stabilization circuit. A power supply circuit for a two-wire instrument, characterized in that it is used as a circuit voltage for a circuit including a microprocessor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9466889U JPH0334197U (en) | 1989-08-11 | 1989-08-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9466889U JPH0334197U (en) | 1989-08-11 | 1989-08-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0334197U true JPH0334197U (en) | 1991-04-03 |
Family
ID=31643985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9466889U Pending JPH0334197U (en) | 1989-08-11 | 1989-08-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0334197U (en) |
-
1989
- 1989-08-11 JP JP9466889U patent/JPH0334197U/ja active Pending