Jamie wrote:

jim beam wrote:

On 03/28/2013 06:51 PM, Michael A. Terrell wrote:


jim beam wrote:


that's bogus. unless there's been a MAJOR screw-up, potting compounds
are carefully matched to the thermal and chemical application - they
serve to increase reliability, not degrade it.



How many deigns have you selected the proper potting compounds for?
What types of filler materials? How did you verify that no moisture
would be trapped inside the potting? Did you verify the temperature
coefficient of very component, the PC board material and the housing?
Test it for extended periods over the entire temperature, humidity and
barometric conditions that it can encounter in service. how about
vibration & impact testing? Or are you just blowing more smoke out your
ass.


wtf is eating your ass tonight? you're right that all those factors are
relevant. that's why i said potting compounds are "carefully matched".

as to moisture, you're attacking a straw man. i specifically didn't
list every possible application detail because it's common knowledge to
anyone doing that work. nobody specifies that any more than mechanical
drawings specify conventional right-hand threading on fasteners. /all/
fasteners are right hand threaded UNLESS left hand is specifically
detailed.



Let me offer you some good advice, put him on your black list so it
won't eat you up. I only see him in replies now, like yours here because
I have block him out of my reader.

He's nothing but an old bickering dried up prone. In his younger
years he most likely good off on little kids learning the field and made
him
feel like he was something else when he offered any knowledge that he
thought was useful to them. These days, the little kids have grown
up and most likely found out that half the information he fed them was
bogus!


Keep up the slander Maynard. I taught first year high school
electronics while I was still a Junior in that school. After that, I
trained new techs to use what they learned in school on the repair
benchg so they could earn a living. I was still doing this at
Microdyne, till the closed the local telemetry 'engineer to order'
facility.

The rest of my work history is online, along with my military service
with AFRTSwhich is availible to anyone with the DOD records database.
Maynard refuses to tell anyone where he works. He just damns everyone
else.


Don't worry about what he has to say, he's one of those that wants
every one like you, to kiss is feet and say how much of a god he is.

It should be obviously that will never happen from this end


The irony! I was 'black list' by an illiterate troll. All I can do
is laugh at the nonsense writing 'style' of someone who consistently
makes a fool of himself on news:sci.electronics.design He thinks an
'Electret' microphone is a 'crystal' microphone. His real name is
Maynard Philbrick. A typical appliance operator 'ham' with the call of
KA1LPA. look at his website to see what a sick individual he is.
http://webpages.charter.net/jamie_5/ if you have the stomach for
childish dirvel.


--

Politicians should only get paid if the budget is balanced, and there is
enough left over to pay them.

Sometimes Friday is just the fifth Monday of the week.