Integrated circuits, resistors, capacitors

Archive for October, 2011

Latent defects from electrostatic discharge,

at or before pcb assembly.

Does anyone have proven evidence of this and definitely this as cause of
defect , ie not stress cracking of die, internal bond failures etc. Or is it
just a convenient label ?


Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/

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GS069 ic

I am searching for info (preferably a datasheet!) on a 8 pin surface
mount ic, marked up as:

GS069
0406

I suspect it is some kind of MOSFET driver.

Any info (who is the manufacturer?) about it would be appreciated.

Cheers,
Dave

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Windows XP management

Find solution for common problems with Windows XP. Collection of
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Question: recorder

Hi,

I need a recorder of some sort which is small can store long
conversations and have excellent microphone. The bigger storage the
better must be as small as possible and the audio should be able to
transfer to the PC but it is not a must. The microphone must be very
good that it the strong requirement together with the long battery
life and small fottprint.

Can anyone recommend any device that fits these requirements ?

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Dodgy H11F1 opto-FET's?

Has anyone got any thoughts about this:
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=170158848446

I asked the seller about postage from Germany to UK, and sending secure
delivery of euros as he doesn’t use PayPal, and the seller didn’t answer my
questions but instead responded with this:

"We have got 2000stk (H11F1 DC/ 9922) and 1000stk (H11F1 DC/ 9934) , when
you want you can buy it all. What would you pay for?"

I don’t recognise those codings from Fairchild’s site, so I asked about
that, and why they’re specified as Shmitt trigger FET when Fairchild
specify them for high linearity and use as a variable resistance, something
Schmitt responses aren’t designed for. I allowed for the possibility that
Fairchild might not be the only makers, and asked about that too. I’ve
twice asked this now, three days apart, but the seller refuses to reply.

This looks extremely dodgy to me, surely someone who knows what they’re
selling would answer quickly to someone who sounded like they knew what
they might be buying and wasn’t sure of a few details.

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Repairing tips for XP

Blog collection of tips and tweaks for Windows XP. Repair your
installation, tweak your registry data base. http://online-windows-xp.blogspot.com/

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