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JPH0241778A - Inverter welding machine - Google Patents

Inverter welding machine

Info

Publication number
JPH0241778A
JPH0241778A JP19064688A JP19064688A JPH0241778A JP H0241778 A JPH0241778 A JP H0241778A JP 19064688 A JP19064688 A JP 19064688A JP 19064688 A JP19064688 A JP 19064688A JP H0241778 A JPH0241778 A JP H0241778A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
voltage
circuit
part
input
inverter
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
JP19064688A
Inventor
Takayuki Kashima
Original Assignee
Hitachi Seiko 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

Links

Abstract

PURPOSE: To correspond to ≥2 kinds different power source voltages without changing over a circuit by providing an input switching part to maintain the DC input voltage of an inverter part constant to the preceding stage of the inverter part.
CONSTITUTION: An input current Iin1 is detected by a current detector 15 and its detected signal is compared with a signal corresponding to a current set values I1 of an input side current setter 17 by an error amplifier 18. Meanwhile, the output voltage Vout1 of the input switching part 10 is detected by a voltage detector 16 and compared with a set value V1 of a voltage setter 19 and a pulse width control circuit 23 is operated by the output voltage of an error amplifier 20 so that its difference is diminished to zero and the ratio of continuity of a switching element 11 is controlled to maintain the output voltage Vout1 almost constant. By this method, a protective circuit of the inverter part can be simplified and a breakdown of a circuit element due to misoperation and erroneous connection of a changeover circuit is prevented.
COPYRIGHT: (C)1990,JPO&Japio
JP19064688A 1988-08-01 1988-08-01 Inverter welding machine Pending JPH0241778A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19064688A JPH0241778A (en) 1988-08-01 1988-08-01 Inverter welding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19064688A JPH0241778A (en) 1988-08-01 1988-08-01 Inverter welding machine

Publications (1)

Publication Number Publication Date
JPH0241778A true true JPH0241778A (en) 1990-02-09

Family

ID=16261541

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19064688A Pending JPH0241778A (en) 1988-08-01 1988-08-01 Inverter welding machine

Country Status (1)

Country Link
JP (1) JPH0241778A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02217167A (en) * 1989-02-15 1990-08-29 Matsushita Electric Ind Co Ltd Arc welding machine and plasma cutting machine
US6849827B2 (en) 1994-11-18 2005-02-01 Illinois Tool Works Inc. Method and apparatus for receiving a universal input voltage in a welding power source
JP2008012586A (en) * 2006-07-10 2008-01-24 Daihen Corp Power unit for arc machining
KR100842877B1 (en) * 2007-05-18 2008-07-04 주식회사 파워웰 Dc arc inverter welding machine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4846852A (en) * 1971-10-19 1973-07-04

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4846852A (en) * 1971-10-19 1973-07-04

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02217167A (en) * 1989-02-15 1990-08-29 Matsushita Electric Ind Co Ltd Arc welding machine and plasma cutting machine
US6849827B2 (en) 1994-11-18 2005-02-01 Illinois Tool Works Inc. Method and apparatus for receiving a universal input voltage in a welding power source
US7319206B2 (en) 1994-11-18 2008-01-15 Illinois Tool Works Inc. Method and apparatus for receiving a universal input voltage in a welding power source
JP2008012586A (en) * 2006-07-10 2008-01-24 Daihen Corp Power unit for arc machining
KR100842877B1 (en) * 2007-05-18 2008-07-04 주식회사 파워웰 Dc arc inverter welding machine

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