<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">You can find the same thing at Ax Man Suplus. :)<br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On May 17, 2019, at 2:23 AM, Rick Engebretson <<a href="mailto:eng@pinenet.com" class="">eng@pinenet.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">As an old dummy, I would go to Goodwill or a junkyard and get a good looking old radio amplifier to salvage. IIRC, the volume control is a reasonable wattage wire wound variable resistor. It would also give you a box.</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">The landfills are getting full of valuable, re-usable electronic components.</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">Wayne Johnson wrote:</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><blockquote type="cite" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; text-decoration: none;" class="">Just remember, 50% of the people are under average intelligence.<br class=""><br class="">If you really want to make a fancy battery tester, create one with a<br class="">microprocessor that runs the battery through various load levels, then<br class="">displays the resulting voltage as a graph on an LCD display.<br class=""><br class="">---<br class="">Wayne Johnson, | There are two kinds of people: Those<br class=""> | who say to God, "Thy will be done,"<br class=""> | and those to whom God says, "All right,<br class=""> | then, have it your way." --C.S. Lewis<br class=""><br class=""><br class="">------------------------------------------------------------------------<br class="">*From:* Mike Miller <<a href="mailto:mbmiller+l@gmail.com" class="">mbmiller+l@gmail.com</a>><br class="">*To:* TCLUG Mailing List <<a href="mailto:tclug-list@mn-linux.org" class="">tclug-list@mn-linux.org</a>><br class="">*Sent:* Wednesday, May 15, 2019 11:01 PM<br class="">*Subject:* Re: [tclug-list] [OT] where to get a 100-ohm resistor?<br class=""><br class="">This is really helpful. It answered a bunch of questions I had but hadn't<br class="">asked. People were commenting on that YouTube battery-testing video that<br class="">a 100-ohm resister wouldn't be right for a D battery, but I guess it also<br class="">wouldn't be right for a 9-volt.<br class=""><br class="">Looking at more info out there on the web -- it's a problem for me that a<br class="">lot of people don't seem to know what they are doing, but they are still<br class="">there, teaching the world. ;-)<br class=""><br class="">Thanks again, Doug.<br class=""><br class="">Mike<br class=""><br class=""><br class="">On Sun, 12 May 2019, Doug Reed wrote:<br class=""><br class=""><blockquote type="cite" class="">Yes, the Ax-Man stores are the place to look if you don't want to ask<br class="">someone to mail it to you. I believe there are 3 or 4 stores around<br class="">town. The only stores I am familiar with are in St Paul and Fridley, but<br class="">I thought there was one more in Bloomington.<br class=""><br class="">The color code for 100 ohms is brown-black-brown. But 100 ohms is too<br class="">low for testing a 9V battery. 100 ohms is fine for testing 1.5 volt<br class="">batteries at about 15 milliamp current load which is within the<br class="">capability of all AAA or larger batteries.<br class=""><br class="">But 100 ohms will attempt to draw about 90 milliamps from a 9V battery.<br class="">Most 9V batteries are rated for 50 milliamps maximum load. Your 100 ohm<br class="">resistor will tend to suck them down so they all fail your test. For a<br class="">similar test effect, you should use a 1000 ohm resistor, perhaps even<br class="">higher, up to 3000 to 5000 ohms so the load is proportional to the<br class="">battery capability.<br class=""><br class="">So when you are looking for the resistor at Ax-Man Surplus, the 100 ohm<br class="">resistor should have Brown as the first band, black or brown or red for<br class="">the second band, and Brown again for the third band. The bands are<br class="">counted with the first band closest to one end.<br class=""><br class="">The 1000 ohm resistor would have the third band colored Red instead of<br class="">brown. Since we don't care exactly what the value is between 1000 and<br class="">5000 ohms, the first band can be any of Brown or Red or Orange, or<br class="">Yellow, and we don't care at all about the second band color.<br class=""><br class="">And I suggest that you look for a resistor that handles one-half watt<br class="">dissipation or more. Your batteries should never approach that but the<br class="">larger physical sizes are usually less likely to break from lots of<br class="">handling. A half watt resistor is physically about 1/8" diameter and<br class="">1/2" long with leads about 1.5" on each end.<br class=""><br class="">The size you pick isn't really critical, it is really just for ease of<br class="">handling. You will probably find multiple examples to choose from, I<br class="">just suggest you don't choose the smallest size you find. Any resistor<br class="">larger than 1/2 watt will also work of course, if that is what you find<br class="">or want. The much larger watt values usually have the resistor value<br class="">simply printed on the side.<br class=""><br class="">And of course buy more than one of each for when you break or loose one.<br class="">:-)<br class=""><br class="">Good luck. If my description isn't enough to work from, you can easily<br class="">find web pages that explain the resistor color code. And you can always<br class="">bring your voltmeter to the store and use it to check the resistor value<br class="">before you buy. Or buy a handful of different values that have brown or<br class="">red on the third band and check them at home. No matter what you choose<br class="">to do, the parts will probably cost less than the gas to get you to the<br class="">store.<br class=""><br class="">Doug Reed.<br class="">North St Paul.<br class=""><br class="">--<br class="">Scientists say the world is made up of protons, neutrons, and electrons.<br class="">They forgot to mention MORONS.<br class=""><br class="">She had buried three husbands and at least two of them had already<br class=""></blockquote>been dead.<br class="">_______________________________________________<br class="">TCLUG Mailing List - Minneapolis/St. Paul, Minnesota<br class=""><a href="mailto:tclug-list@mn-linux.org" class="">tclug-list@mn-linux.org</a><span class="Apple-converted-space"> </span><<a href="mailto:tclug-list@mn-linux.org" class="">mailto:tclug-list@mn-linux.org</a>><br class=""><a href="http://mailman.mn-linux.org/mailman/listinfo/tclug-list" class="">http://mailman.mn-linux.org/mailman/listinfo/tclug-list</a><br class=""><br class=""><br class=""><br class=""><br class="">_______________________________________________<br class="">TCLUG Mailing List - Minneapolis/St. Paul, Minnesota<br class=""><a href="mailto:tclug-list@mn-linux.org" class="">tclug-list@mn-linux.org</a><br class=""><a href="http://mailman.mn-linux.org/mailman/listinfo/tclug-list" class="">http://mailman.mn-linux.org/mailman/listinfo/tclug-list</a><br class=""><br class=""></blockquote><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">_______________________________________________</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">TCLUG Mailing List - Minneapolis/St. Paul, Minnesota</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><a href="mailto:tclug-list@mn-linux.org" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" class="">tclug-list@mn-linux.org</a><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><a href="http://mailman.mn-linux.org/mailman/listinfo/tclug-list" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" class="">http://mailman.mn-linux.org/mailman/listinfo/tclug-list</a></div></blockquote></div><br class=""></body></html>