JPS5448346A - Induction heating apparatus - Google Patents

Induction heating apparatus

Info

Publication number
JPS5448346A
JPS5448346A JP11443577A JP11443577A JPS5448346A JP S5448346 A JPS5448346 A JP S5448346A JP 11443577 A JP11443577 A JP 11443577A JP 11443577 A JP11443577 A JP 11443577A JP S5448346 A JPS5448346 A JP S5448346A
Authority
JP
Japan
Prior art keywords
transistor
circuit
control circuit
timing control
collector
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
JP11443577A
Other languages
Japanese (ja)
Other versions
JPS5947877B2 (en
Inventor
Yoshinosuke Nagata
Takao Nakatsuka
Kazufumi Ushijima
Tatsuhiro Nagai
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP52114435A priority Critical patent/JPS5947877B2/en
Publication of JPS5448346A publication Critical patent/JPS5448346A/en
Publication of JPS5947877B2 publication Critical patent/JPS5947877B2/en
Expired legal-status Critical Current

Links

Landscapes

  • General Induction Heating (AREA)
  • Inverter Devices (AREA)

Abstract

PURPOSE:To disuse the electric consumption for switching operation by using a transistor for a switching element of an inverter. CONSTITUTION:A load current detecting unit 6 is provided between a commercial electric source 7 and a full-wave rectifying circuit 8, and its output signal is added to a comparing circuit 9 for comparing with the output siganl of a reference signal generating circuit 10. It is then added to a timing control circuit 11 for controlling the length of on-time of a transistor 1. Besides, in a collector zero voltage detecting circuit connected with a collector of the transistor 1, a time point when the transistor 1 is changed over to be on is detected, and the output signal is fed to the timing control circuit 11 as a reset signal. Here, an automatic oscillation loop is constructed by the transistor 1, a heating coil 2, a condenser 4, the timing control circuit 11, the collector zero voltage detecting circuit 12, and a base voltage control circuit 13, for controlling the oscillation frequency automatically according to the impedance variation in a heating coil.
JP52114435A 1977-09-20 1977-09-20 induction heating device Expired JPS5947877B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52114435A JPS5947877B2 (en) 1977-09-20 1977-09-20 induction heating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52114435A JPS5947877B2 (en) 1977-09-20 1977-09-20 induction heating device

Publications (2)

Publication Number Publication Date
JPS5448346A true JPS5448346A (en) 1979-04-16
JPS5947877B2 JPS5947877B2 (en) 1984-11-21

Family

ID=14637644

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52114435A Expired JPS5947877B2 (en) 1977-09-20 1977-09-20 induction heating device

Country Status (1)

Country Link
JP (1) JPS5947877B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5699992A (en) * 1980-01-09 1981-08-11 Matsushita Electric Ind Co Ltd Induction heating cooking oven
JPS5863890U (en) * 1981-10-20 1983-04-28 ソニー株式会社 high frequency power inverter
US5111014A (en) * 1988-06-14 1992-05-05 Kabushiki Kaisha Toshiba Electromagnetic cooker including load control

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5699992A (en) * 1980-01-09 1981-08-11 Matsushita Electric Ind Co Ltd Induction heating cooking oven
JPS6129117B2 (en) * 1980-01-09 1986-07-04 Matsushita Electric Ind Co Ltd
JPS5863890U (en) * 1981-10-20 1983-04-28 ソニー株式会社 high frequency power inverter
US5111014A (en) * 1988-06-14 1992-05-05 Kabushiki Kaisha Toshiba Electromagnetic cooker including load control

Also Published As

Publication number Publication date
JPS5947877B2 (en) 1984-11-21

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