Postao/la grunf » Ned stu 08, 2020 10:23 am
Dorian napisao:aparatusonitus napisao:Dorian napisao:...tako da po svemu sudeci su to ipak najbolji lateralci ikad proizvedeni...
Lateralci...think again!?
izgleda da si u pravu, eto ne treba vjerovati ni svemu sa velikog diyaudia, def nisam isao u dubinu i na zalost ni nemam ni jedan primjerak toga za stvarni test,
zanimljivo da nitko nije to vidio ni prigovorio na 6 stranica koliko je tema isla, isprika svekolikom pucanstvu
https://www.diyaudio.com/forums/solid-s ... -urls.html" target="_blank" target="_blank" target="_blank" target="_blank" target="_blank
je, pokojni AndrewT na trećoj stranici;
As far as I know Toshiba don't make or sell any Lateral Power mosFETs. , ali ga niko nije ferma
evo s jednog drugog foruma za svekoliko pučanstvo
The other main category are vertical mosfets - here we can include Toshiba's popular ones and IRF's.
Even if Toshiba called them "Π-MOS" (pi-mos), they belong to the vertical category by their characteristics.
Here we have 3 generations, let's say - first generation (1983 Toshiba databook) were the ones used by Sansui, 2SK405 / 2SJ115. These ones are the closest ones to the lateral mosfets - meaning lower gate capacitance Cgs and lower transconductance Yfs (still about 2x of laterals for about the same gate capacitance, which is a plus).
The second "generation" were 2SK1529 / 2SJ200, used mostly by Sony amps (TA-F707ES for example) and some Kenwood's, from what I saw so far. These have greater transconductance, but also greater capacitance Cgs. Vgs is almost the same as 2SK405 / 2SJ115. A bit more rugged, 10A drain current compared with 8A for Sansui's ones. From their characteristics, let's say that they are "more vertical" than the ones used by Sansui.
And the last generation were 2SK1530 / 2SJ201, used by example in Sony's like TA-FA3ES, 5ES, 7ES and the more popular TA-FA777ES. Also the most rugged ones from the them, with 12A drain current. Again bigger gate capacitance and bigger transconductance.
There were also other ones similar more or less with 2SK1529 and 2SJ200, like 2SK413 / 2SJ118 (most probably "unknown", don't remember seeing them used in amps).
And we have another sort of "even more vertical" like 2SK3497 / 2SJ618, which were used by Denon in some of their amps. These were also made by Toshiba.
The Toshiba ones were "made for audio", meaning that they are "more complementary" than IRF's for example. So this should translate into lower distorsions and better sound. But I think they would need some bigger bias current to sound ok, compared with Hitachi's.
Sound-wise, I can't find anything against them, compared to laterals. If we compare a pair of laterals with a pair of Toshiba's, then there I think are chances that the Toshiba's will have a bit more "slam" in the bass region, due to greater transconductance.
Bolje nešto od nečega, nego ništa od ničega