Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific quantity comparison means
Patent
1986-08-15
1987-10-06
Scott, J. R.
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific quantity comparison means
361100, 363 46, H02H 3093
Patent
active
046987193
ABSTRACT:
A protective triggering system protects the thyristor switch element of a pulse generator circuit controlling a pulse operated electrostatic precipitator. The protective triggering is initiated for every pulse in the area around passage of the pulse current from positive to negative, its object being to supplement the spark-over released retriggering system so as to ensure that spark-overs occurring immediately after the current passage across zero do not cause renewed thyristor current in the absence of a triggering signal.
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patent: 4599504 (1986-07-01), Ito
patent: 4616302 (1986-10-01), Mandelcorn
patent: 4644439 (1987-02-01), Taarning
F. L. Smidth & Co. A/S
Scott J. R.
Wysocki A. Jonathan
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