Apparatus for instantly compensating for line voltage irregulari

Details Apparatus for instantly compensating for line voltage irregulari Apparatus for instantly compensating for line voltage irregulari

1976-06-15

1977-09-06

Pellinen, A. D.

Electricity: power supply or regulation systems

Remote sensing

219131R, 323 24, 323 39, G05F 304

Patent

active

040470962

ABSTRACT:
An apparatus for compensating for line voltage variations in a pulsed welding arc supply. A circuit for drawing a current that is proportional to that part of the supply voltage in excess of a predetermined reference is drawn from the capacitor charging circuit in a UJT triggering device. Thus, the more the line voltage exceeds the desired level, the greater is the compensating current withdrawn from the capacitor charging circuit. As a result, the average welding current remains at the desired level despite supply-voltage variations.

REFERENCES:
patent: RE26866 (1970-04-01), Storm
patent: 3226627 (1965-12-01), Fromkin
patent: 3335318 (1967-08-01), Yancey
patent: 3479560 (1969-11-01), Paget et al.
patent: 3548290 (1970-12-01), Swinehart

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