Monitoring stud-welding phototransistor responds to arc light

Details Monitoring stud-welding phototransistor responds to arc light Monitoring stud-welding phototransistor responds to arc light

Category

B - Operations, Transporting

Subcategory

23

Subsubcategory

K

CPC

327/67

IPC codes

B23K 9/06 (2006.01) B23K 9/073 (2006.01) B23K 9/095 (2006.01)

Type

Patent

Patent number

CA 1253220

Description

Abstract A method and an apparatus for sensing arc discharge in a welding operation wherein an arc discharge device is connected by current feeding to a workpiece and to an article to be welded thereto at a work area. The magnitude of electric current passing through the current feeding lines is sensed to produce a predetermined voltage. This predeter- mined voltage is connected to a photoreceptor which is disposed adjacent a welding position for applying a voltage to the photoreceptor. A signalling device is connected to the output of the photoreceptor to indicate a valid arc discharge signal.

Application Number

505231

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