JPS5652419A - Heater control circuit - Google Patents

Heater control circuit

Info

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
Application number
JP12930979A
Other languages
Japanese (ja)
Inventor
Tsuneo Okubo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP12930979A priority Critical patent/JPS5652419A/en
Publication of JPS5652419A publication Critical patent/JPS5652419A/en
Pending legal-status Critical Current

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
JP12930979A 1979-10-05 1979-10-05 Heater control circuit Pending JPS5652419A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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