nce :-)
en what it does is going to upset some non-politicians. It's just that poli= ticians seem to be able to ignore their consciences from time to time.
A conscience just tells you the difference between right and wrong. Your mo= rality determines whether you will do the right thing or something that isn= 't entirely morally correct but is perhaps more expedient or looks better u= nder the of superficial inspection administered by the media.
--=20 Bill Sloman, Nijmegen=20
None that right-wing nitwits can see. Their perceptions are depressingly one-dimen
Right-wing nitwits do have trouble in perceiving subtle ideas. If they don't understand what's going on, they think that the fault is in the stuff they can't understand, rather than in their perception.
-- Bill Sloman, Nijmegen
No it isn´t.
This transistor (AF114) is equipped with protective grounded helmet ;-) That is pretty well grounded!
AF114 has 4 inline asymmetrical legs:
Even though they are grounded, some of them contracted some Whisky disease:
Here is a close up of one of the aliens threadening grounding:
From:
The cousins of AF114 are AF115...AF118 - so beware!
-Here they are selling AF114 for £0. But they are not telling about the threadening grounded aliens inside? ;-) :
The transistors AF139, AF239, AF239S also has protective grounded helmet
- with four legs layed out in a squire - but no Whiskey inside...
:o)
On a sunny day (Sat, 30 Jun 2012 09:52:40 +0200) it happened Glenn wrote in :
AF118 was used in Philips Vidicon camera preamp IIRC. I have played with those, never seen anything like this. Amazing, those tin whiskers.
Do those whiskers only form at certain temperatures?
-- Not being able to sense, say, infrared doesn't mean it's not there. ;)
On 30/06/12 11.30, Jan Panteltje wrote: ...
-Note that AF118 is not mentioned (not whiskers prone...). It was an error to mention it.
-I do not know. Apparently the transistor do not need to have been in service. Please read more here:
Transistor Faults, Testing and Replacement:
Audio output and driver transistors can also give problems. They sometimes become intermittent, and the same screwdriver handle tap-test will often reveal the problem.
This seems to affect many audio transistors including OC71, OC78, OC81, AC127, AC128, AC176, AC187 and AC188. The problem is not as universal as with the AF117 series however, and replacement with a similar transistor from a scrap set will often be a permanent solution. ..."
Whiskers form both in the air space and through the jelly [Silicone?]???:
Tin Whiskers Growing Inside ~45 Year Old AF114 Transistors:
Is this correct? Then many lead free solderings will suffer?:
Anybody remember this?:
-- Well, let me put it in a away even you might understand: Just because you can't discern sense doesn't mean it isn't there.
On a sunny day (Sat, 30 Jun 2012 12:19:53 +0200) it happened Glenn wrote in :
ESA Cassini space probe went into safe mode because of what is believed to be a whisker growth problem:
a whisker growth problem:
There is more about whiskers here:
The Art of Metal Whisker Appreciation: A Practical Guide for Electronics Professionals
A useful theory should identify what we must control to make confident predictions. Such a theory has remained elusive ... [Look at pdf-page 10] ...
1950s and 60?s [1] [2]: Bell Labs worked through the periodic table to determine whether addition of some element to a Tin coating would ?quench? whiskering ? Adding 0.5 - 1% (by weight) of lead (Pb) works ? Some additives seem to enhance whiskeringSince 1990s: Most US MIL specs require adding Pb to any tin coatings used around electronics. ? Concentration is usually named as 2% to 3% Pb by weight for ?margin?
What additives quench zinc and cadmium whiskers? ? We don?t know, but certainly NOT chromate conversion finishes! ... ? No material depletion observed around the base of whisker ? No correlation between whisker length and thickness ... [pdf-page 18]
-- Umm... I think he was agreeing with you.
On a sunny day (Sat, 30 Jun 2012 13:10:49 +0200) it happened Glenn wrote in :
That is an impressive document. One thing strikes me, when I look at those whiskers I cannot help but think they are guided by electrical filed strength, I did not see that mentioned as cause anywhere (have not read all of that pdf yet). Somehow the whiskers always point right to the other conductor?
BTW I think AF118 is not an error,
That does not seem to play in my browser.
Amusing that Jamie sees my situation that way. His criticism of other's people's mental inadequacies regularly look more like an exhibition of his own.
In other words Jamie couldn't understand what was being said, and threw his rattle out of the cot to vent his frustation.
Jamie doesn't react well to stuff he can't understand.
The trouble with lawyers is that they frequently don't understand the reality which the words are intended to represent. Rewriting a patent after a lawyer has made it legally unambiguous can be an entertaining exercise.
But at a level that Jamie can't access.
-- Bill Sloman, Nijmegen
Droit de Seigneur?
-- "For a successful technology, reality must take precedence over public relations, for nature cannot be fooled." (Richard Feynman)
yet).
In one or the other document, two unused AF11x was cut open, and they also suffered of whiskers.
The whiskers grow at the base - not at the top.
Maybe it is nanites ;-) :
Glenn
Hi Fred
I thought about writing "on" instead of "in" - but that seem not to matter. Your interpretation and my "spelling" will lead the group way out of topic in a few posts...
Glenn
On 30/06/12 14.08, Jan Panteltje wrote: ...
Try these "direct" links:
Glenn
Transistors often make better diodes than diodes (but all three legs are still needed).
A tin-foil hat? Nah, the tin-foil hat brigade are hardly well grounded. They're really out there.
On a sunny day (Sat, 30 Jun 2012 15:54:30 +0200) it happened Glenn wrote in :
OK, that works, downloade teh movie. It is like it is freaking alive! Like a plant. In that pdf it says they found it gets its material from far away. and indeed you see no changes at the 'root'. Maybe new life form? Facinatin!
same
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