JPS5652419A - Heater control circuit - Google Patents
Heater control circuitInfo
- Publication number
- JPS5652419A JPS5652419A JP12930979A JP12930979A JPS5652419A JP S5652419 A JPS5652419 A JP S5652419A JP 12930979 A JP12930979 A JP 12930979A JP 12930979 A JP12930979 A JP 12930979A JP S5652419 A JPS5652419 A JP S5652419A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- input
- heater lamp
- triode
- switch
- 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
- Fixing For Electrophotography (AREA)
- Control Of Resistance Heating (AREA)
- Control Of Temperature (AREA)
Abstract
PURPOSE: To make it possible to reduce an effect to other circuit due to on-off of the heater lamp and operate the circuit stably, by providing a temperature detector which varies the resistance value by a temperature of the fixing heater lamp.
CONSTITUTION: The voltage varied by the resistance value of a thermistor is applied to the other input of the voltage comparator 20 which has applied the fixed voltage to its one input, the electric charge and discharge voltage of capacitor 40 for the electric charge and discharge circuit is controlled by an output of the voltage comparator 20, one input voltage of the voltage comparator 23 by which a square tooth wave signal is provided to the other input is controlled by an output signal of said electric charge and discharge voltage, an output signal of this voltage comparator 23 is differentiated, a pulse signal is generated by the differentiated output signal, and it is provided to a gate of the triode AC switch 34 which is connected in series with the fixing heater lamp and is inserted into the AC electric power source. The heater lamp 35 is made on-off by controlling the triode AC switch 34 by a pulse signal which has been provided to a gate of the triode AC switch 34.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12930979A JPS5652419A (en) | 1979-10-05 | 1979-10-05 | Heater control circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12930979A JPS5652419A (en) | 1979-10-05 | 1979-10-05 | Heater control circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5652419A true JPS5652419A (en) | 1981-05-11 |
Family
ID=15006374
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12930979A Pending JPS5652419A (en) | 1979-10-05 | 1979-10-05 | Heater control circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5652419A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105212815A (en) * | 2015-11-04 | 2016-01-06 | 何林 | Infrared probe type hand drier |
CN105231942A (en) * | 2015-11-16 | 2016-01-13 | 周玉林 | Sensing type hand drier |
-
1979
- 1979-10-05 JP JP12930979A patent/JPS5652419A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105212815A (en) * | 2015-11-04 | 2016-01-06 | 何林 | Infrared probe type hand drier |
CN105231942A (en) * | 2015-11-16 | 2016-01-13 | 周玉林 | Sensing type hand drier |
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