Forgot to change subject - my regrets.<br>
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<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">Date: Thu, 23 Feb 2006 23:20:06 -0800<br>From: "Tod Merley" <<a href="mailto:todbot88@gmail.com">
todbot88@gmail.com</a>><br>Subject: Re: fedora-list Digest, Vol 24, Issue 231<br>To: <a href="mailto:fedora-list@redhat.com">fedora-list@redhat.com</a><br>Message-ID:<br> <<a href="mailto:8b5e63cf0602232320k2b17f54ejfd6f59f069fc59ca@mail.gmail.com">
8b5e63cf0602232320k2b17f54ejfd6f59f069fc59ca@mail.gmail.com</a>><br>Content-Type: text/plain; charset="iso-8859-1"<br><br>> Date: Thu, 23 Feb 2006 20:15:36 -0500<br>> From: jludwig <<a href="mailto:wralphie@comcast.net">
wralphie@comcast.net</a>><br>> Subject: Re: [OT] Cannot save BIOS settings<br>> To: For users of Fedora Core releases <<a href="mailto:fedora-list@redhat.com">fedora-list@redhat.com</a>><br>> Message-ID: <
<a href="mailto:200602232015.37404.wralphie@comcast.net">200602232015.37404.wralphie@comcast.net</a>><br>> Content-Type: text/plain; charset="utf-8"<br>><br>> On Thursday 23 February 2006 19:17, Tod Merley wrote:
<br>> > > Date: Thu, 23 Feb 2006 16:51:28 -0500<br>> > > From: "James He" <<a href="mailto:icrazy@gmail.com">icrazy@gmail.com</a>><br>> > > Subject: [OT] Cannot save BIOS settings
<br>> > > To: <a href="mailto:fedora-list@redhat.com">fedora-list@redhat.com</a><br>> > > Message-ID:<br>> > > <<a href="mailto:fd0f51b90602231351h361b635cx4da7fce0941a8534@mail.gmail.com">
fd0f51b90602231351h361b635cx4da7fce0941a8534@mail.gmail.com</a>><br>> > > Content-Type: text/plain; charset=ISO-8859-1<br>> > ><br>> ><br>> > 2. Measuring the actual CMOS battery voltages - with a volt meter out of
<br>> > box and with a simulated load if I could figure out with that was (if it<br>> > holds with a 1K resistor my guess is that it is fine). I would also<br>> look<br>> > into measuring it as it feeds the CMOS on the MB (very carefully of
<br>> > course!!).<br>> ><br>> !<br>> ><br>> > Tod<br>> These batteries deliver micro-amps. Maybe a 100k resistor.<br>> (They usually last 3 to 5 years in service.)<br><br><br>Your point is well taken. I stand well corrected.
<br><br>The technical specifications of a typical 2016 battery can be found at:<br><br><a href="http://www.kodak.com/eknec/documents/f9/0900688a8019d7f9/KCR2016.pdf">http://www.kodak.com/eknec/documents/f9/0900688a8019d7f9/KCR2016.pdf
</a><br><br>A couple of interesting things here. One is that your 100K resistor will<br>load the poor little critter down to about 2.8 volts at room temperature<br>(see the operating voltage verses load resistance curves) and a second is
<br>that typical "skin resistance" I have measured often in the 100K range (it<br>varies from about 2M on very dry tough skin down to a couple of K if people<br>are sweating) and that cheap meters I have seen have "ohms per volt"
<br>rateings of as low as 1K. So on the three volt scale the meter would load<br>3k making the measurement.<br><br>Thanks for the help!<br><br>Tod</blockquote>
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<div>And I will try to remember to change the subject as well!</div>
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<div>Tod</div><br> </div>