References
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- Knoch , R and Welz , W . 1986 . ‘Metal-active gas pulsed arc welding with transistorised current sources’ . Schweißlen und Schneiden (Düsseldorf) , 38 ( 2 ) : 67 – 71 .
- Scheibner , P . 1978 . ‘Current sources and weld quality in MAG welding’ . ZIS Mitteilungen , 20 ( 6 ) : 572 – 582 .
- Pfeiffer , G . 1988 . ‘Investigations into the oxidising behaviour of thyristor controlled current sources’ . ZIS Mitteilungen , 30 ( 6 ) : 576 – 581 .