JPS5668806A - Temperature control device - Google Patents

Temperature control device

Info

Publication number
JPS5668806A
JPS5668806A JP14587479A JP14587479A JPS5668806A JP S5668806 A JPS5668806 A JP S5668806A JP 14587479 A JP14587479 A JP 14587479A JP 14587479 A JP14587479 A JP 14587479A JP S5668806 A JPS5668806 A JP S5668806A
Authority
JP
Japan
Prior art keywords
voltage
circuit
temperature
amplifier
differential amplifying
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
Application number
JP14587479A
Other languages
Japanese (ja)
Other versions
JPS6255163B2 (en
Inventor
Isamu Okuda
Hiroshi Horii
Hiroshi Fujieda
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 JP14587479A priority Critical patent/JPS5668806A/en
Publication of JPS5668806A publication Critical patent/JPS5668806A/en
Publication of JPS6255163B2 publication Critical patent/JPS6255163B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Control Of Temperature (AREA)

Abstract

PURPOSE: To increase the control accuracy of temperature, by using the differential amplifying circuit consisting of two in-phase amplifiers and thus securing a constant amplification factor of the differential amplifying circuit regardless of the set temperature.
CONSTITUTION: The detected voltage eT corresponding to the temperature to be controlled and detected through the temperature detecting circuit A is applied to the differential amplifying circuit C. The circuit C consists of the in-phase amplifiers C1 and C2. The amplifier C1 uses the voltage eT for the in-phase input and then the reference voltage ei produced through the temperature setting circuit B for the reference input; and the amplifier C2 uses the set voltage ed produced through the circuit B and then the output voltage e1 of the amplifier C1 for the reference input. Then an appropriate relation is selected for the amplification factors between the amplifiers C1 and C2, and thus the difference between the voltage ed and eT can be amplified with a fixed amplification factor at all times. At the same time, the output voltage e2 becomes equal to the voltage ei when ed=eT is obtained. Accordingly, a high-accuracy control is secured for the driving circuit D.
COPYRIGHT: (C)1981,JPO&Japio
JP14587479A 1979-11-09 1979-11-09 Temperature control device Granted JPS5668806A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14587479A JPS5668806A (en) 1979-11-09 1979-11-09 Temperature control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14587479A JPS5668806A (en) 1979-11-09 1979-11-09 Temperature control device

Publications (2)

Publication Number Publication Date
JPS5668806A true JPS5668806A (en) 1981-06-09
JPS6255163B2 JPS6255163B2 (en) 1987-11-18

Family

ID=15395038

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14587479A Granted JPS5668806A (en) 1979-11-09 1979-11-09 Temperature control device

Country Status (1)

Country Link
JP (1) JPS5668806A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7166824B2 (en) 2002-03-12 2007-01-23 Matsushita Electric Industrial Co., Ltd. High-frequency heating apparatus and control method thereof
US8042532B2 (en) 2004-01-07 2011-10-25 Sharp Kabushiki Kaisha Heat-cooking apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7166824B2 (en) 2002-03-12 2007-01-23 Matsushita Electric Industrial Co., Ltd. High-frequency heating apparatus and control method thereof
US8042532B2 (en) 2004-01-07 2011-10-25 Sharp Kabushiki Kaisha Heat-cooking apparatus

Also Published As

Publication number Publication date
JPS6255163B2 (en) 1987-11-18

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