JPS55135911A - Temperature regulator - Google Patents
Temperature regulatorInfo
- Publication number
- JPS55135911A JPS55135911A JP4377779A JP4377779A JPS55135911A JP S55135911 A JPS55135911 A JP S55135911A JP 4377779 A JP4377779 A JP 4377779A JP 4377779 A JP4377779 A JP 4377779A JP S55135911 A JPS55135911 A JP S55135911A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- voltage
- input terminal
- inverted input
- output
- 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
- Control Of Temperature (AREA)
- Testing And Monitoring For Control Systems (AREA)
Abstract
PURPOSE:To make it possible to obtain a temperature regulator which is extremely safe and convenient, by making it raise an alarm in either case of an abnormal rise or fall of temperature. CONSTITUTION:The voltage which is set up in the output terminal of the positive side of a thermoelectric couple 10 is applied to the non-inverted input terminal of the differential amplification circuit 40. To the inverted input terminal of the circuit 40 is provided an output of the temperature setting circuit 30 which has been set with the switches 31-33. The output voltage V0 of the circuit 40 drives the output relay 43 through the voltage detection circuit 41, and simultaneously is applied to both the non-inverted input terminal of the comparison circuit 61 of the alarm circuit 50 and the inverted input terminal of the comparison circuit 71. Moreover, the voltage V1 of one end of the variable resistor 52 and the voltage V2 of the other end are applied to the inverted input terminal of the circuit 61 and the non-inverted input terminal of the circuit 71, respectively. And the voltage V0 is compared with the reference voltage V1 and V2 (V1>=V2) in the circuits 61 and 71, and in case of V0>V1 and V2>V0, the transistor 81 conducts and the alarm relay is operated.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4377779A JPS55135911A (en) | 1979-04-11 | 1979-04-11 | Temperature regulator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4377779A JPS55135911A (en) | 1979-04-11 | 1979-04-11 | Temperature regulator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55135911A true JPS55135911A (en) | 1980-10-23 |
Family
ID=12673178
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4377779A Pending JPS55135911A (en) | 1979-04-11 | 1979-04-11 | Temperature regulator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55135911A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5781614A (en) * | 1980-11-10 | 1982-05-21 | Matsushita Electric Ind Co Ltd | Temperature display device |
JPS62137601A (en) * | 1985-12-11 | 1987-06-20 | Matsushita Electric Ind Co Ltd | Relay drive device |
JPH0580861A (en) * | 1991-09-19 | 1993-04-02 | Nec Yamagata Ltd | Temperature control circuit |
-
1979
- 1979-04-11 JP JP4377779A patent/JPS55135911A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5781614A (en) * | 1980-11-10 | 1982-05-21 | Matsushita Electric Ind Co Ltd | Temperature display device |
JPS62137601A (en) * | 1985-12-11 | 1987-06-20 | Matsushita Electric Ind Co Ltd | Relay drive device |
JPH0580861A (en) * | 1991-09-19 | 1993-04-02 | Nec Yamagata Ltd | Temperature control circuit |
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