JPS56114018A - Temperature controlling circuit - Google Patents
Temperature controlling circuitInfo
- Publication number
- JPS56114018A JPS56114018A JP1626480A JP1626480A JPS56114018A JP S56114018 A JPS56114018 A JP S56114018A JP 1626480 A JP1626480 A JP 1626480A JP 1626480 A JP1626480 A JP 1626480A JP S56114018 A JPS56114018 A JP S56114018A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- temperature
- timer
- sensitive resistance
- resistance element
- 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
- G05D23/1902—Control of temperature characterised by the use of electric means characterised by the use of a variable reference value
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Resistance Heating (AREA)
- Thermally Insulated Containers For Foods (AREA)
- Cookers (AREA)
- Control Of Temperature (AREA)
Abstract
PURPOSE:To realize an automatic shift ro the heat insulation state, by combining a timer and a heat-sensitive resistance element and then lowering the sensing temperature of the heat-sensitive resistance element after a prescribed set time. CONSTITUTION:When the power supply switch 14 is closed, the heater 3 has an electric conduction to heat up the cooking pot. The temperature of the pot is detected by the bridge circuit 18 using the heat-sensitive resistance element 23 for one side. The transistor 17 is turned on when the temperature reaches the set value. Thus the timer 9 starts its driving, and at the same time the thyristor 15 is turned off by the gate circuit 16. After this, the transistor 17 repeats on and off according to the change of the element 23 to keep the temperature at a constant level. Then the resistance 34 is connected in parallel to the element 23 by the timer switch 32 when the set time of the timer elapses. As a result, the sensing temperature lowers down to the heat insulation level to be controlled thereafter by the heat insulating temperature. In such way, an automatic shift is secured to the heat insulation state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1626480A JPS56114018A (en) | 1980-02-12 | 1980-02-12 | Temperature controlling circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1626480A JPS56114018A (en) | 1980-02-12 | 1980-02-12 | Temperature controlling circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56114018A true JPS56114018A (en) | 1981-09-08 |
Family
ID=11911689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1626480A Pending JPS56114018A (en) | 1980-02-12 | 1980-02-12 | Temperature controlling circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56114018A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6088525A (en) * | 1983-10-20 | 1985-05-18 | 三菱電機株式会社 | Rice cooker |
| JPH07254258A (en) * | 1994-03-16 | 1995-10-03 | Rikuzendou:Kk | Video tape retrieving apparatus |
-
1980
- 1980-02-12 JP JP1626480A patent/JPS56114018A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6088525A (en) * | 1983-10-20 | 1985-05-18 | 三菱電機株式会社 | Rice cooker |
| JPH07254258A (en) * | 1994-03-16 | 1995-10-03 | Rikuzendou:Kk | Video tape retrieving apparatus |
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