Circuit for high frequency arc welding apparatus using a low fre

Details Circuit for high frequency arc welding apparatus using a low fre Circuit for high frequency arc welding apparatus using a low fre

1979-01-09

1981-02-03

Shaw, C. C.

Electric heating

Metal heating

By arc

B23K 909

Patent

active

042490634

ABSTRACT:
A circuit for a high frequency arc welding apparatus which can control the welding current by keeping the peak value, that is the amplitude of the pulse component, of the welding current waveform constant and improve operating efficiency and reliability. The circuit includes a D.C. electrical source for welding and a condenser for regenerating. The welding current is controlled by controlling the voltage of the condenser. A low frequency switch periodically discharges the condenser to limit the voltage of the condenser and to transfer the stored energy of the condenser to the electrical source.

REFERENCES:
patent: 4046987 (1977-09-01), Hashimoto et al.

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