Society of Glass Technology · [Sheffield] · leaf 520
shunt circuit contain-ing the discharge-gap.Instead of the in-ductances, Z3, Z4, ablow-out device maybe provided for pre-venting short-circuit-ing by the discharge.A step-up transformeris added if the sup-ply pressure is toolow, the two induct-ances, Z3, Z4, being ineither the primary orsecond ary… … Fig. 10. 38 JOURNAL OF THE SOCIETY OF GLASS TECHNOLOGY. common conductors. A single inducing coil in the common con-ductor may, less advantageously, replace the two coilsshown. Both inducing coils may surround one crucible. Variable in-ductances may be placed in the primary circuits, A, B, for…
Glass
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