FIELD: mechanical engineering. SUBSTANCE: device has power unit 1, connected in series with electron switch 6, lower frequency filter 7, current transducer 9, burner 11, feedback and control units 18, which are connected with the units mentioned above, and oscillator 19. Lower frequency filter has additional winding 8, which is connected to current relay 17. Output of the relay is connected with input of control unit 18. Electron switch is made on the base of composed transistor (common base circuit). Common base is connected with output of feedback circuit 12, which is connected to current transducer 9. Two-sectional controlled discharger-storage 24 is brought into high-voltage circuit of oscillator 19. Output of the second section of the storage is connected to the burner. EFFECT: improved quality of weld; improved number of good articles. 1 dwg
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