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Our PE department got rid of a bunch of exercise equipment. I
pulled a nice commercial exercise bike out of the metal recycle and
had the kids strip all the plastic off of it, and I found the guts
of it are an automotive type alternator and a big resistor. I want
to hook it up as a current source for a battery charger/light
bulbs/ammeter/something to give the kids an idea of how much actual
work a KW is. <br>
<br>
The alternator is a Mando 38611-101. A picture of the alternator
is here:<br>
<br>
<a class="moz-txt-link-freetext" href="http://www.gympart.com/itemdesc.aspx?ic=LCA10">http://www.gympart.com/itemdesc.aspx?ic=LCA10</a><br>
<br>
If you look at the picture on the link above and rotate it 90
degrees so the black plastic part is at 6:00, it has the following
terminals:<br>
On the black plastic part, "Ex" and "S". <br>
<br>
On the main body of the alternator, clockwise from 8:00 the
terminals are "L2", "P", "B" and "E". There is also a ground
terminal. <br>
<br>
If you look a this chart,<br>
<br>
<blockquote type="cite"><a class="moz-txt-link-freetext" href="http://dasko.co.nz/articles/alternator-terminals-explained">http://dasko.co.nz/articles/alternator-terminals-explained</a></blockquote>
<br>
It looks like all I would need to hook up to would be the "B"
terminal and the ground and I can ignore the rest. <br>
<br>
Do I have this right? <br>
<br>
On an automotive alternator how fast does it normally have to spin
to put out 12V? <br>
<br>
Thanks<br>
Dave<br>
<br>
<br>
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