JPS5781614A - Temperature display device - Google Patents
Temperature display deviceInfo
- Publication number
- JPS5781614A JPS5781614A JP55158598A JP15859880A JPS5781614A JP S5781614 A JPS5781614 A JP S5781614A JP 55158598 A JP55158598 A JP 55158598A JP 15859880 A JP15859880 A JP 15859880A JP S5781614 A JPS5781614 A JP S5781614A
- Authority
- JP
- Japan
- Prior art keywords
- light
- temperature
- light emitting
- emits
- 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
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
- G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1906—Control of temperature characterised by the use of electric means using an analogue comparing device
- G05D23/1912—Control of temperature characterised by the use of electric means using an analogue comparing device whose output amplitude can take more than two discrete values
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Testing And Monitoring For Control Systems (AREA)
Abstract
PURPOSE:To discriminate obviously conditions of the current temperature for a set temperature, by providing a display material, which emits the light when the room temperature is higher than the set temperature, and a display material which emits the light when it is lower than the set temperature. CONSTITUTION:In case of a low room temperature, the potential at a point (a) determined by a temperature detecting thermistor 6, a temperature regulator 2, and a resistance 7 and potentials at points (b), (c), and (d) determined by resistances 8-11 satisfy relations (a)>(b), (c), and (d), and a light emitting diode 3 does not emit the light because the output of a voltage comparator 12 is 1, and a light emitting diode 4 emits the light because the output of a voltage comparator 13 is 0. When the room temperature approximates to the set temperature, respective potentials satisfy (a)>(b), (c), and (d), and outputs of voltage comparators 12 and 13 are 1, and light emitting diodes 3 and 4 do not emit the light. When the room temperature rises furthermore, the light emitting diode 3 emits the light because the output of the voltage comparator 12 is 0, and the light emitting diode 4 does not emit the light because the output of the voltage comparator 14 is 1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55158598A JPS5781614A (en) | 1980-11-10 | 1980-11-10 | Temperature display device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55158598A JPS5781614A (en) | 1980-11-10 | 1980-11-10 | Temperature display device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5781614A true JPS5781614A (en) | 1982-05-21 |
Family
ID=15675180
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55158598A Pending JPS5781614A (en) | 1980-11-10 | 1980-11-10 | Temperature display device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5781614A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60158325A (en) * | 1984-01-30 | 1985-08-19 | Matsushita Electric Ind Co Ltd | Temperature level display device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55135911A (en) * | 1979-04-11 | 1980-10-23 | Omron Tateisi Electronics Co | Temperature regulator |
-
1980
- 1980-11-10 JP JP55158598A patent/JPS5781614A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55135911A (en) * | 1979-04-11 | 1980-10-23 | Omron Tateisi Electronics Co | Temperature regulator |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60158325A (en) * | 1984-01-30 | 1985-08-19 | Matsushita Electric Ind Co Ltd | Temperature level display device |
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