JPS54113788A - Temperature control circuit - Google Patents
Temperature control circuitInfo
- Publication number
- JPS54113788A JPS54113788A JP2138178A JP2138178A JPS54113788A JP S54113788 A JPS54113788 A JP S54113788A JP 2138178 A JP2138178 A JP 2138178A JP 2138178 A JP2138178 A JP 2138178A JP S54113788 A JPS54113788 A JP S54113788A
- Authority
- JP
- Japan
- Prior art keywords
- partial pressure
- thermistor
- temperature
- pressure circuit
- circuit
- 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
- Control Of Combustion (AREA)
- Control Of Temperature (AREA)
Abstract
PURPOSE: To enlarge a differential, by changing the partial pressure ratio of a partial pressure circuit consisting of a thermistor, a variable resistance, etc. by connecting or separating another resistance to or from said partial pressure circuit in response to the conditions of control transistors.
CONSTITUTION: A partial pressure circuit is arranged by resistances 12, 13, a variable resistance 14 and a thermistor 15 for detecting temperature, ane a partial pressure circuit consisting of resistances 17, 18 for obtaining reference voltage is connected. Both partial pressure circuits are connected to a comparison amplifier 41, and operate a combustion controller 60 through an overheat detecting circuit 50. The thermistor 15 is mounted to a boiler, etc., and resistance values increase when temperature lowers. In this case, temperature signals become higher than reference voltage, the output of an operational amplifier 41 reaches 1, a transistor 42 is in ON and the combustion controller 60 is conducted. When temperature rises, the output of the amplifier 41 is inverted to H, the transistor 42 is in OFF and the conduction of the combustion control circuit 60 is broken.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2138178A JPS54113788A (en) | 1978-02-25 | 1978-02-25 | Temperature control circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2138178A JPS54113788A (en) | 1978-02-25 | 1978-02-25 | Temperature control circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54113788A true JPS54113788A (en) | 1979-09-05 |
JPS6338722B2 JPS6338722B2 (en) | 1988-08-02 |
Family
ID=12053504
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2138178A Granted JPS54113788A (en) | 1978-02-25 | 1978-02-25 | Temperature control circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54113788A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6222103A (en) * | 1985-07-23 | 1987-01-30 | Matsushita Electric Works Ltd | Temperature control circuit for heater |
JPS6266316U (en) * | 1985-10-15 | 1987-04-24 | ||
JPH0611372A (en) * | 1992-12-18 | 1994-01-21 | Hitachi Ltd | Thermal flowmeter |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4842290A (en) * | 1971-10-02 | 1973-06-20 | ||
JPS50290A (en) * | 1973-05-11 | 1975-01-06 |
-
1978
- 1978-02-25 JP JP2138178A patent/JPS54113788A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4842290A (en) * | 1971-10-02 | 1973-06-20 | ||
JPS50290A (en) * | 1973-05-11 | 1975-01-06 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6222103A (en) * | 1985-07-23 | 1987-01-30 | Matsushita Electric Works Ltd | Temperature control circuit for heater |
JPS6266316U (en) * | 1985-10-15 | 1987-04-24 | ||
JPH0611372A (en) * | 1992-12-18 | 1994-01-21 | Hitachi Ltd | Thermal flowmeter |
Also Published As
Publication number | Publication date |
---|---|
JPS6338722B2 (en) | 1988-08-02 |
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