JPS56168233A - Temperature controller - Google Patents
Temperature controllerInfo
- Publication number
- JPS56168233A JPS56168233A JP7306580A JP7306580A JPS56168233A JP S56168233 A JPS56168233 A JP S56168233A JP 7306580 A JP7306580 A JP 7306580A JP 7306580 A JP7306580 A JP 7306580A JP S56168233 A JPS56168233 A JP S56168233A
- Authority
- JP
- Japan
- Prior art keywords
- heater
- vcc
- voltage
- temperature
- comparator
- 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
- G05D23/2401—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 using a heating element as a sensing element
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Resistance Heating (AREA)
- Control Of Temperature (AREA)
Abstract
PURPOSE:To reduce generated noise by converting a current flowing through a sensor to voltage to peak hold it in the other half wave of a feeding cycle to a heater. CONSTITUTION:When temperature of a heater 2 is low, its impedance ZT is high, consequently collector current IC is small and peak holding voltage VT attains to a value close to DC voltage Vcc for a circuit. When temperature of the heater 2 becomes high the VT drops from the VCC. Further, when a zero pulse generating circuit 20 is not actuated, a TR25 is on, thereby a temperature setting voltage VS is raised to the VCC, and an output VO of a comparator 24 is made to be Low, but when a zero pulse is generated to make VZ to the VCC, the TR25 turns off to lower the the VS. At this time, if VT>VS, the output VO of the comparator is increased to the VCC to trigger the power controlling element 9 through a resistance 26 and the heater 2 is permitted to conduct. When VT<VS,the heater 2 does not conduct.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7306580A JPS56168233A (en) | 1980-05-30 | 1980-05-30 | Temperature controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7306580A JPS56168233A (en) | 1980-05-30 | 1980-05-30 | Temperature controller |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56168233A true JPS56168233A (en) | 1981-12-24 |
Family
ID=13507563
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7306580A Pending JPS56168233A (en) | 1980-05-30 | 1980-05-30 | Temperature controller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56168233A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02196312A (en) * | 1989-01-26 | 1990-08-02 | Sanyo Electric Co Ltd | Temperature controller |
-
1980
- 1980-05-30 JP JP7306580A patent/JPS56168233A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02196312A (en) * | 1989-01-26 | 1990-08-02 | Sanyo Electric Co Ltd | Temperature controller |
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