The function of a snubber circuit connected across an scr is to

A. Suppress dv/dt B. Increase dv/dt C. Decrease dv/dt D. Keep transient voltage at a constant value

A snubber circuit is used in the scr control circuits to overcome the effects of

A. Transients in the dc supply B. Corona C. Electromagnetism D. Heating caused by the high voltage ac supply

For thyristors, pulse triggering is preferred over dc triggering because

A. The gate dissipation is low B. The pulse system is simpler C. The triggering signal is required for a […]

The duration of the pulse in a pulse triggering system for scrs should be at least

A. 60 us B. 40 us C. 20 us D. 10 us

RC triggering is preferred over resistance triggering because

A. Provides a large value of the triggering angle B. Provides accurate triggering C. Causes quick triggering D. Protects the […]