Circuit is shown in Fig. 16-95 - 16-97. The electrode automatic adjuster has better performance. Such as the use of the accuracy high, good linearity current output type bridge
comparing circuit; using differential arc current negative feedback circuit (advance), a make ahead of time and correction adjustable intensity, without causing overshoot. Figure, BQ for the slip clutch motor field winding; TG as a tachometer generator, BQTG the tachometer generator field winding.