NSI cell matching
« on: June 27, 2004, 10:06:22 PM »

so I finally have a process for matching up these cells


im going through a TON of them without even a close match!!!

I checked a few from some UA T4b modules... the typical ranged around 450-500ms decay time...

all of the ones im going through are averaging 100-120ms decay time...

this really sucks...

no wonder they cost so much to make.. im only getting like 1 out of 30 as a close match

Mark Burnley

NSI cell matching
« Reply #1 on: June 28, 2004, 05:17:30 AM »

That's a low hit rate  :?

What vintage are the UA modules, and how many of the UA variants have you tried?

Do you think this is the sort of margin they got originally from a batch of cells, or have you got a particularly "fast" batch? I wonder how much this average varies. Also, I wonder if "advances" in component QC weedle out these "slow" cells at the factory where the cells are actually made- the reasoning being that these cells with a longer decay time are just too sluggish for industrial measurement/control purposes. And all the slower ones you want get put in the dumpster  :evil:

Might be worth finding out?

O_O tape is life O_O


NSI cell matching
« Reply #2 on: June 28, 2004, 11:00:50 PM »
err, whats your test setup like?
If I can't fix it, I can fix it so nobody else can!
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NSI cell matching
« Reply #3 on: June 28, 2004, 11:06:32 PM »
my fault...

I had something set to the wrong setting :) as in I was using the neg edge of a pulse instead of the pos


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