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Old 16th November 2009, 04:09 PM   #5891
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No I'm not smarter than Papa !!! No one said or think that !!!! Never ever , at least not ME!!
AL MY RESPECT TO Mr PASS!!!
I have a something similar design so now I would like to try to X-ed . Nothing wrong with the orig design .
Million thank to Mr Pass to share with us such a great amp .
Yes you right we who want high power F5 or XF5 we should start a new tread .
But you always find information about the original (well design and great amp) if you go back at least 100 page .
Sorry about that .
Greets
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Old 16th November 2009, 04:12 PM   #5892
Renron is offline Renron  United States
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Quote:
Originally Posted by udailey View Post
Tinitus,
There was no maliciousness in my post whatsoever. None.
Uriah
Udailey,
I don't think that was directed at you, others were much more harsh in their remanding than you!

Ron
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Old 16th November 2009, 04:14 PM   #5893
AndrewT is offline AndrewT  Scotland
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Quote:
V grade jFETs
Quote:
V grade JFETS
Quote:
Originally Posted by gaborbela View Post
For me it does not make sense to change the orig design JET to V fet
learn to read.
The suggestion in the post said Vgrade jFET. It did not say Vfet nor JET.
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Last edited by AndrewT; 16th November 2009 at 04:20 PM.
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Old 16th November 2009, 04:27 PM   #5894
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You may want to consider using V grade jFETs to give more current capability to drive the load capacitance and the lower Gm of the Laterals. This may require the cascode voltage to be altered to bring the Vgrade temp back down to acceptable levels.[/QUOTE]

Sorry about Andrew I didn't saw the "j" before the FET .
How Juma said your advise is great , I agree but if is JET or FET there is no base .
Probably he thought abut the original drawing were the cascode uses BJT .
A bit I got confused!
--------------------------------------------------------------------------
Posted by JUMA

Exactly! V grade JFETS are better solution here and resistors in voltage divider should be something like 4k7 from base to rail and 2k7 from base to ground.
--------------------------------------------------------------------------
Any way thank you very much , there is no hard feelings what so ever !
God bless you
I want to learn from you guys !
Greets

Last edited by gaborbela; 16th November 2009 at 04:32 PM.
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Old 16th November 2009, 04:28 PM   #5895
CBRworm is offline CBRworm  United States
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I agree, a new thread probably should be started for Mutant F5's and F5X's.
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Old 16th November 2009, 04:33 PM   #5896
tinitus is offline tinitus  Europe
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Quote:
Originally Posted by Renron View Post
Udailey,
I don't think that was directed at you, others were much more harsh in their remanding than you!

Ron
Thanks

Udailey, I first read your post AFTER my own post

My post wasnt really aimed at anyone in particular, not at all
Just a general heads up to keep a good tone
I think its important especially here
Too much to loose


Seperate threads, sure
But it wont make anything any easier at all
Probably just even more difficult to find information
Or there may not be any information to find
But sure, we have to control ourselves
Or it will be a mess

Last edited by tinitus; 16th November 2009 at 04:46 PM.
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Old 16th November 2009, 04:49 PM   #5897
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Just a general heads up to keep a good tone
I think its important especially here
Too much to loose[/QUOTE]

I agree and support these .
We must learn from each-other and try to give our best or nothing in that "case".
There is not one person who know everything or was born with the F5 .
We should always ask from expert guys someone wrote these !
Greets
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Old 16th November 2009, 04:53 PM   #5898
brianco is offline brianco  Ireland
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Quote:
Originally Posted by tinitus View Post
Thanks

Udailey, I first read your post AFTER my own post

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


Seperate threads, sure
But it wont make anything any easier at all
Probably just even more difficult to find information
Or there may not be any information to find
But sure, we have to control ourselves
Or it will be a mess

I think it is far too late now for anyone to separate these posts; however it is something to be borne in mind in the future.
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Old 16th November 2009, 05:02 PM   #5899
tinitus is offline tinitus  Europe
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Quote:
Originally Posted by gaborbela View Post

There is not one person who know everything or was born with the F5 .

Oh yes there may be just that

We should always ask from expert guys someone wrote these !

My english is inadequate to understand that one
Please, maybe just let this thing cool down a bit
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Old 16th November 2009, 05:24 PM   #5900
juma is offline juma  Germany
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Quote:
Originally Posted by gaborbela View Post
....
How Juma said your advise is great , I agree but if is JET or FET there is no base .....
Are you dyslexic ? What is JET ?

JFETs are amplifying devices, BJTs are cascoding devices and they have base.

I'm afraid you can not be helped further, you disregard good advices or you interpret them wrongly, so as far as I'm concerned, you are on your own.

Last edited by juma; 16th November 2009 at 05:30 PM.
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