Nelson Pass said:the power JFETs have a region at lower voltages where the
curve has an exponential (concave triode shape), and then at
higher voltages they start looking like the others.
Mr P,
is that JFET curve you describe not like the ascending half of a sine ?
(After the 1979 Russ Meyer movie i had no problem anymore differentiating between concave and convex, i always think convixen

I would describe the sine from 0 to pi/2 as convex. The sine
from 3pi/2 to 0 as concave.
/np/: big Russ Meyers fan
from 3pi/2 to 0 as concave.
/np/: big Russ Meyers fan
Thank You Mr. Pass, regarding your characteristic FET curve comments. I need to digest a little of that... But, I guess like most DIYer's, I really need to stop looking for the elusive ideal components and evaluate, optimize and finish my current design... Before something more intersting comes around??? Or, the end of the year was it???




Nelson Pass said:The production boards arrived yesterday. I thought you might
like to see the first pair of F3 channels.
Are you thinking group buy?


Mike,
after NP has used 200 JFETS we can start begging him for the remaining 4800.
Does make me wonder how to attach those strange TO25* packages to a heatsink.
Never realised those boards are free-hanging on the heatsink.
That heatsink is some piece of work, btw.
Thank you for posting.
after NP has used 200 JFETS we can start begging him for the remaining 4800.
Does make me wonder how to attach those strange TO25* packages to a heatsink.
Never realised those boards are free-hanging on the heatsink.
That heatsink is some piece of work, btw.
Thank you for posting.
Minimum purchase at Lovoltech is 2500 pieces, and I believe
they have the parts at this time.
Also, the board is actually attached to the sink via 6 bolts.
😎
they have the parts at this time.
Also, the board is actually attached to the sink via 6 bolts.
😎
Manila
Good Morning
The 1K-4999 pcs price is US$0.94. We have a US$ 1K min line item, US$
1K min
order and US$ 1K min shipment. (The LU1014D has shipping multiples of
75
pcs.) Therefore, a min order actually is 1050 pcs.
Regards
Shawn Fogarty
----- Original Message -----
From: "dennis kleitsch"___
To: "Shawn Fogarty" ___lovoltech.com
Sent: Saturday, September 24, 2005 10:38 AM
Subject: Re: Price and Availability
Good Morning
The 1K-4999 pcs price is US$0.94. We have a US$ 1K min line item, US$
1K min
order and US$ 1K min shipment. (The LU1014D has shipping multiples of
75
pcs.) Therefore, a min order actually is 1050 pcs.
Regards
Shawn Fogarty
----- Original Message -----
From: "dennis kleitsch"___
To: "Shawn Fogarty" ___lovoltech.com
Sent: Saturday, September 24, 2005 10:38 AM
Subject: Re: Price and Availability
Blues said:Mabuhay
Allan,
trying to invite the JFETS if you are not able to buy them ?

1 k ordering makes it a feasable gb, i reckon.
"Mabuhay Shawn! Or is it Dennis? Didn't know Lovoltech jfets are manufactured there?"
djk: I'm in the USA. I deleted most of that e-mail that didn't really pertain to audio.
My point was to be that the 2500pcs minimum is for tape-and-reel with pre-formed leads.
The full lead length part comes in tubes of 75pcs, with a $1K per line item minimum.
djk: I'm in the USA. I deleted most of that e-mail that didn't really pertain to audio.
My point was to be that the 2500pcs minimum is for tape-and-reel with pre-formed leads.
The full lead length part comes in tubes of 75pcs, with a $1K per line item minimum.
jacco vermeulen said:
Allan,
trying to invite the JFETS if you are not able to buy them ?
1 k ordering makes it a feasable gb, i reckon.
Jacco...Sort of. scared. 😱 Just thinking about starting GBs make me scared. After all that's going on with PCBs and parts.

Nelson Pass said:The production boards arrived yesterday. I thought you might
like to see the first pair of F3 channels.
NP,
It looks like the F3 is Cascode Modulated, has the regular CCS and is supply voltage regulated(with the third mosfet?).
Allan
Check out the distortion curves - I finally got a single-stage
amp to .00x distortion numbers.
😎
amp to .00x distortion numbers.
😎
Would it work with my Dunlavy SC-II's? (If not I'll have a good excuse to build something... 😀)
Erik
Erik
.00x distortion numbers.
Congratulations, quite impressive.
The F3 manual is very informative......and long.
May i suggest using the word "authoritatively" on the next interview.
Very curious what a TV reporter makes out of that.

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