F4 matched FET's

[Zen Mod]

OK, probably dumb question:

Are the IRFP240 matched only to each other or are they also matched to the IRFP9240?

I have a pile of matched IRFP240's so if they don't need to be matched also to the IRFP9240's, then I only need IRF9240's. Cuts my cost in half!

upper half- 3 matched

lower half - 3 matched

you can match all 6, but only if you are paranoic 😉

 

[Variac]

Only a paranoid schitzoprenic (sp) would then match upper , lower AND the two balanced?

I'm doing a balanced version of the Choky two-step.
(2 mosfets per board) : 4 boards for stereo.

Looks like I don't have to match anything!!!


Apologies to the various Paranoid- Schitzoprenic members....

 

[Zen Mod]

Only a paranoid schitzoprenic (sp) would then match upper , lower AND the two balanced?

I'm doing a balanced version of the Choky two-step.
(2 mosfets per board) : 4 boards for stereo.

Looks like I don't have to match anything!!!

Apologies to the various Paranoid- Schitzoprenic members....

ya mean two mini F4s (balanced) per channel?

yup- in that case you don't need even same spk cable lenghts

 

[GRollins]

Apologies to the various Paranoid- Schitzoprenic members....

You talkin' to me, bub?

Grey

 

[MikeW]

Yes, Grey.

I need some TL431's

 

[claiborne]

Count me in too.

I need enough for 2 stereo boards as well so put me down for 2 sets. Thanks!

 

[jleaman]

Yes, Grey.

I need some TL431's

I second that 🙂

 

[Zen Mod]

............

I need some TL431's

you have them (usually one) in shot PC PSUs

edit:

you can find one even in non-shot PC PSUs
😉

 

[jleaman]

you have them (usually one) in shot PC PSUs

edit:

you can find one even in non-shot PC PSUs
😉

Really, good to know. I'll be looking asap 😛

 

[Zen Mod]

Really, good to know. I'll be looking asap 😛

tip:
don't mess with that PC PS from which you typing............
but- if you must ,do something with Lineup's ..........

 

[mpmarino]

I need some TL431's

I can probably spare a couple for you Mr. W. - that's that 3 legged zener thingy - right?


🙂

 

[jleaman]

I can probably spare a couple for you Mr. W. - that's that 3 legged zener thingy - right?


🙂

I need 4 😀

 

[Tarasque]

Total interest so far...19 sets! nearly half way.

I looked for the TL431...I gan get them for 0,07 euro I will throw them in for free...

So 2 TL431 is included for each set of fets.

If the 2SK370 is substituted by the 2SK170 and the 2SJ108 by the 2SJ74, I can add then for 1,66euro.

So the complete Q-pack 35 euro.
6x IRF240
6x IRF9240
1x TL431
2x2SK170
2xSJ74

 

[jleaman]

Total interest so far...19 sets! nearly half way.

I looked for the TL431...I gan get them for 0,07 euro I will throw them in for free...

So 2 TL431 is included for each set of fets.

If the 2SK370 is substituted by the 2SK170 and the 2SJ108 by the 2SJ74, I can add then for 1,66euro.

So the complete Q-pack 35 euro.
6x IRF240
6x IRF9240
1x TL431
2x2SK170
2xSJ74

I'm in 🙂

 

[JimT]

I put myself down for 2 sets earlier. Just to clear this up I am building 2 amps so I would like 2 Q-packs. This is a better price than I can get for unmatched ones from Digikey!!!

Thanks
Jim

 

[marsupialx]

I'm in for one set (enough for one stereo amp). - Thanks!

 

[chrismercurio]

2 sets

I need 2 sets.... one for each monoblock.

Thanks,

C

 

[finneybear]

One set for me, too. Thanks

 

[ipolyakov]

Two sets for me, please.
Thanks

 

[Tarasque]

Total interest so far: 27 sets....23 sets to go.

(marginwalker, You are included as well.)