I am checking a huge high voltage gadget. It has a lot of BIG thyristor bundles (Semikron, SKKT 106/18 E, Dual Thyristor Module, 600A 1800V).
I'm trying them on a Fluke 87V multi-meter, and they all read EXACTLY the equivalent.
In Diode mode, they all perused 0.018v among entryway and cathode in the two headings, open circuit on every single other stick.
In Resistance mode, they all perused 18.1 ohms among entryway and cathode in the two bearings, open circuit on every other stick.
I would expect that this implies the gadgets have all bombed in the very same manner with an entryway to cathode short, yet it would be extremely odd if this was the situation.
Does anybody believe that these gadgets have fizzled with a door to cathode short, or would you expect this conduct on a multi-meter?
Furthermore, what about the 3TA80GK03NB/04 thyristor? This is likewise a thyristor module, yet with three expression.
Question two:
A thyristor, I know, is a four-layer PNPN structure, with an anode on the principal P segment, a door on the subsequent P area, and a cathode on the subsequent N segment. This straightforward structure proposes that any thyristor should be conceivable to mood killer, by directing the majority of the anode current out through the door, causing the cathode current to go to zero, along these lines unlatching the thyristor. What makes a GTO thyristor exceptional? Is it only a common thyristor yet with determined qualities for this method of activity? Or then again is there some extraordinary silicon structure within it that makes it work generally in an unexpected way? How would I know what sort of thyristor should purchase?