JPS55134328A - Temperature converter - Google Patents
Temperature converterInfo
- Publication number
- JPS55134328A JPS55134328A JP4094079A JP4094079A JPS55134328A JP S55134328 A JPS55134328 A JP S55134328A JP 4094079 A JP4094079 A JP 4094079A JP 4094079 A JP4094079 A JP 4094079A JP S55134328 A JPS55134328 A JP S55134328A
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- lead wire
- operator
- burn
- scale
- 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
Links
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
PURPOSE: To obtain burn-out up-scale when disconnection occurs in a temperature measuring resistor by inserting a resistor and a semiconductor element in electric wires connecting a voltage detection lead wire and a common lead wire to an input of an operator in an automatic control system such that the resistor and semiconductor element cross each other.
CONSTITUTION: A high resistor R3 is provided between a node of a voltage detection lead wire B1 and a resistor R2 and a COM having a common electric potential, and a diode D between a node of a resistor R2 and an opposite phase input terminal of an operator 3 and a common lead wire B2. When disconnection occurs in a current supply lead wire A of a temperature measuring resistor 1, an electric current (i) from a constant current source 2 flows to a zener diode ZD alone, and a charge voltage of a capacitor C2 is discharged momentarily through R2 and Rb. As a result, an output voltage from the operator 3 is momentarily put in a burn-out up-scale. When disconnection occurs in the lead wire B1, the same result is finally obtained. When the lead wire B2 is broken, an output from the operator 3 can be put in a burn-out up-scale properly in accordance with a selected value of the resistor R2.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4094079A JPS5858012B2 (en) | 1979-04-06 | 1979-04-06 | temperature converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4094079A JPS5858012B2 (en) | 1979-04-06 | 1979-04-06 | temperature converter |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55134328A true JPS55134328A (en) | 1980-10-20 |
JPS5858012B2 JPS5858012B2 (en) | 1983-12-23 |
Family
ID=12594491
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4094079A Expired JPS5858012B2 (en) | 1979-04-06 | 1979-04-06 | temperature converter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5858012B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57114498U (en) * | 1980-12-29 | 1982-07-15 |
-
1979
- 1979-04-06 JP JP4094079A patent/JPS5858012B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57114498U (en) * | 1980-12-29 | 1982-07-15 | ||
JPS6221958Y2 (en) * | 1980-12-29 | 1987-06-04 |
Also Published As
Publication number | Publication date |
---|---|
JPS5858012B2 (en) | 1983-12-23 |
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