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A/D for end of charge detection for NIMHs & NICADs
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Mike
electronics forum Guru Wannabe


Joined: 22 Oct 2005
Posts: 102

PostPosted: Wed Jul 19, 2006 8:51 pm    Post subject: A/D for end of charge detection for NIMHs & NICADs Reply with quote
Is a 10bit A/D be adequate for detecting the end charge condition for
NIMH & NICAD battery packs?

Mike

------------------------------------------------------------------------
The odds of a single modest length protein randomly forming is approx
1 in 10^260. By comparison the number atoms in the known universe has
been estimated at 10^80 atoms.
Figues are from the writings of Nobel Prize winner Francis Crick in 1981.
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PeterSmith1954@googlemail
electronics forum addict


Joined: 04 Jul 2006
Posts: 79

PostPosted: Wed Jul 19, 2006 9:37 pm    Post subject: Re: A/D for end of charge detection for NIMHs & NICADs Reply with quote
Mike wrote:
Quote:
Is a 10bit A/D be adequate for detecting the end charge condition for
NIMH & NICAD battery packs?

Mike

------------------------------------------------------------------------
The odds of a single modest length protein randomly forming is approx
1 in 10^260. By comparison the number atoms in the known universe has
been estimated at 10^80 atoms.
Figues are from the writings of Nobel Prize winner Francis Crick in 1981.

8 bits would be adequate, imo.

Cheers

PeteS
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Bob Masta
electronics forum Guru Wannabe


Joined: 03 May 2005
Posts: 219

PostPosted: Thu Jul 20, 2006 1:28 pm    Post subject: Re: A/D for end of charge detection for NIMHs & NICADs Reply with quote
On Wed, 19 Jul 2006 16:51:37 -0400, Mike <nomtrxspam@comcast.net>
wrote:

<snip>
Quote:

------------------------------------------------------------------------
The odds of a single modest length protein randomly forming is approx
1 in 10^260. By comparison the number atoms in the known universe has
been estimated at 10^80 atoms.
Figues are from the writings of Nobel Prize winner Francis Crick in 1981.

Just for the record: The above statement, while true, is often
misused by creationists. They have created a "straw man" argument
that if life wasn't created by God, then the only alternative is that
it must have formed *in one go* against ridiculous odds.

There are some major fallacies here: The first is that nothing in
chemistry forms randomly. Consider the odds of billions of
atoms "randomly" coming together to form a perfect cube
from sea water. If you do the combinatorial math considering
all the possible non-cubic alignments you get much longer odds
than the above example. Yet this happens all the time, every
day, all over the world, when salt crystallizes from sea water.

Another major fallacy is that they seem to think that any
non-theological hypothesis about the origin of life requires
everything to happen in one shot. But the world doesn't
work that way, either. Once there are "building blocks"
(amino acids, which are known to arise spntaneously from
inert materials), then these can form into sub-assemblies
and so on. Probability-wise, this is like the odds of getting
a straight flush in poker on the initial deal, versus allowing
a player an unlimited number of new cards and letting him keep
the ones that fit each time.

But the very worst fallacy in these "odds" games is that they
are (allegedly) computing the probability of a given outcome.
But there are an enormous number of possible outcomes that
would be equally acceptable. If not *that particular*
protein, there are others that would do the same job, possibly
better. (That's the whole idea of evolution in the first place.) And
(the question the creationists are really concerned about) there
is no particular predefined outcome that *must* look like us.

Just imagine the 20-tentacled slime creatures from Alpha Centauri
saying "Gosh, what are the odds that pure random processes could
form perfect creatures like *US*?!!!"

We now return you to our regularly scheduled electronics
programming...

Best regards,






Bob Masta
dqatechATdaqartaDOTcom

D A Q A R T A
Data AcQuisition And Real-Time Analysis
www.daqarta.com
Home of DaqGen, the FREEWARE signal generator
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jasen
electronics forum Guru Wannabe


Joined: 18 Jun 2006
Posts: 204

PostPosted: Fri Jul 21, 2006 7:50 am    Post subject: Re: A/D for end of charge detection for NIMHs & NICADs Reply with quote
On 2006-07-19, Mike <nomtrxspam@comcast.net> wrote:
Quote:
Is a 10bit A/D be adequate for detecting the end charge condition for
NIMH & NICAD battery packs?

Mike

with offset zero it probably is. -- if those 10 bits correspond to voltages
between 1.10 and 1,30 volts (per cell) you'd have a resolution of about 200uV
per bit. Is that enough ?

--

Bye.
Jasen
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Ken Iohanson
Guest
PostPosted: Mon Sep 25, 2006 12:41 pm    Post subject: Reply with quote
http://BritneySpearsEmpire.com/
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Google
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