Choix Câbles d'enceintes

[mélaudiophile]

merci les amis, on conclura donc que les XLR ne sont pas seulement pour la déco. Il a déjà bien rempli son office depuis des années, et j'espère qu'il continuera car il paraît que s'il claque c'est foutu...Il y aurait des transistors IGBT qui sont très difficiles à trouver ou introuvables.

Voici ce qu'en dit Nelson Pass en 2001:
"IGBT's are essentially two devices
on a chip; a MOSFET whose output Drain goes into the Base
of a high power Bipolar device whose Collector attaches
back to the Source of the FET. In an N channel IGBT the
MOSFET is N channel and its output is boosted by a PNP
transistor.

For high end linear applications there are a couple of
problems. First, there is no way of biasing the MOSFET
independently of the Bipolar.

Matching is essential when using them in
parallel, but the match has to occur not only between
the MOSFET portion, but also the Bipolar device, and this
is very difficult to do, resulting in current hogging and
reliability problems.

The parts were a pain in the butt, both Threshold
and Counterpoint seemed to have abandoned them, and
the manufacturer discontinued offering complementary
parts for audio use."

Jean

[laurent martiarena]

ben oui ! ya pas que dans le monde du tube qu'il y à des références qui deviennent introuvables !