JFETs from Linear Systems

[EDDELARUE]

11.60 32.7
11.60 32.8
11.60 32.9
................
// 11.62 33.0 //
................
11.64 32.9
11.68 32.7
11.68 33.0
11.70 32.9

For highlighted above we figuring out VP= - 0.7v. So, we have the equation of jfet and two points of the graph.
My doubt : the others points of "your jfet" : Is the same with graph?!

[craigtone]

Originally Posted by krath

Can someone explain which device grade A,B etc is best for Aleph J power amplifier.

Did anyone ever answer this?

[Zen Mod]

yes

[craigtone]

Originally Posted by Zen Mod

yes

and?

[auxie22]

Originally Posted by craigtone

and?

Probably best to use the BL's as most people who have made the Aleph J and F5 for that matter use them. The higher Idss will theoretically give you higher transconductance therefore higher gain. how true this is in reality all depends on what you use for your constant current source and your biasing resistors amongst other variables.

I would say people have done tests on both the GR and BL grades and it seems the BL has come out on top as that is what's preferred on the BOM. In any case stick to the BOM it is generally a tried and true method.

[Jason]

All grades now back in stock.

[maartentje]

When are the lsk170 back in stock?

[Jason]

Hi! We currently have grade D in stock. Other grades will be replenished in a month or two.

[dirkwright]

Does anyone have spice models for the LSJ74 series? I have one for a SJ74, and it appears to be closest to the B version. I don't know if it's accurate to this new production series.

[Holzarbeiter]

Jason,

Is Grade B still on schedule to arrive by the end of this month? Need to put in an order at the store for other bits at the same time...

Thanks

Originally Posted by Jason

Hi! We currently have grade D in stock. Other grades will be replenished in a month or two.