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<p>Steve:<br>
That is the best description of a condenser I have heard!<br>
Cecil<br>
</p>
<div class="moz-cite-prefix">On 5/12/2020 9:04 AM, Stephen Offiler
wrote:<br>
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<div>Condenser function: it connects across the points, aka in
parallel. Points are used to switch current through the coil
primary. Coil primary functions like a big inductor - it
stores energy in a magnetic field, and it uses that field to
supply energy to oppose any change in current. It can't win,
because the energy gets depleted, but it does try. As the
points open, that implies a sudden change in current from the
steady DC value to zero. Inductance responds by trying to
keep that current flowing. It "piles up" electrons at the
opening points which elevates the voltage there. It would
certainly arc, if the condenser wasn't there. The condenser
charges up and gives that voltage (that pile of electrons) a
place to go, thus suppressing the arc and extending the life
of the points substantially.</div>
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<div>SO</div>
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<div dir="ltr" class="gmail_attr">On Tue, May 12, 2020 at 9:49
AM <<a href="mailto:szabelski@wildblue.net"
moz-do-not-send="true">szabelski@wildblue.net</a>> wrote:<br>
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<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Steve,<br>
<br>
The condenser is actually a capacitor, originally called a
condenser (probably because a charge condensed internally) and
later called a capacitor. There should be no continuity
between the condenser case and the pigtail wire. A capacitor
is made of two thin sheets of metal that hold a charge until
there is a short between the case and the pigtail. The two
thin plates are separated by a thin medium that allows the
charge to build up to a specified amount. The purpose of the
condenser is to store extra energy and give you that little
“extra kick” when discharged. <br>
<br>
As I said in an earlier post, it is difficult to check a
condenser, it takes special equipment. Even if it passes,
there is no guarantee how long it will last since the medium
that separates the two plates can fail and allow a short
between the two plates. The best thing is to try a different
condenser. It just has to be one with the same capacity to
store the required charge. <br>
<br>
Carl<br>
<br>
<br>
----- Original Message -----<br>
From: STEVE ALLEN <<a
href="mailto:steveallen855@centurytel.net" target="_blank"
moz-do-not-send="true">steveallen855@centurytel.net</a>><br>
To: <a href="mailto:at@lists.antique-tractor.com"
target="_blank" moz-do-not-send="true">at@lists.antique-tractor.com</a><br>
Sent: Mon, 11 May 2020 17:39:06 -0400 (EDT)<br>
Subject: Re: [AT] AT Digest, Vol 28, Issue 7<br>
<br>
<br>
----- Original Message -----<br>
Message: 7<br>
Date: Sun, 10 May 2020 19:53:23 -0500<br>
From: Phil Auten <<a href="mailto:pga2@basicisp.net"
target="_blank" moz-do-not-send="true">pga2@basicisp.net</a>><br>
To: <a href="mailto:at@lists.antique-tractor.com"
target="_blank" moz-do-not-send="true">at@lists.antique-tractor.com</a><br>
Subject: Re: [AT] Project Updates '49 A, '51 A, and '47 B
(STEVE<br>
ALLEN)<br>
Message-ID: <<a
href="mailto:168f1f90-8d7a-1eef-e95e-28fb0fa7e41b@basicisp.net"
target="_blank" moz-do-not-send="true">168f1f90-8d7a-1eef-e95e-28fb0fa7e41b@basicisp.net</a>><br>
Content-Type: text/plain; charset=utf-8; format=flowed<br>
<br>
'49A - If your points are clean and reading .5 ohms when
closed and .7 <br>
ohms with cardboard separating the points, your points are
shorted. With <br>
the cardboard in, they should read an open circuit, and .5
ohms when <br>
closed says your contacts aren't making contact well. If you
took those <br>
measurements with the points installed, disconnect them and
retest. If <br>
the points read 0.0 ohms closed and open circuit with the
cardboard in, <br>
then the problem is elsewhere.<br>
'49 A: I forgot to mention, if the points measure correctly
outside the <br>
distributor you may have a bad coil.<br>
<br>
Phil in TX<br>
<br>
Phil,<br>
<br>
Remember that the points set in a Wico X mag is two separate
pieces. If I take them off, I can screw them back together
and check for continuity, BUT: while mounted in the mag,<br>
the fixed one is in contact with the case of the mag, and the
other, the one that moves, is in contact with the terminal of
the condenser. Now, let me speculate here: <br>
the terminal in the condenser does not touch the case of the
condenser, right? So, the two points should not have
continuity because the one is connected to the terminal <br>
and the other is "connected" (through the case) to the mag
case. UNLESS there is continuity inside the condenser. I do
not understand condensers well at all, <br>
but *SHOULD there be continuity between the case of the
condenser and the terminal of the condenser*? <br>
If not, that may well be my problem (per Cecil). I will
investigate tonight.<br>
<br>
BTW, I know that the shaft is turning and that the points are
opening and closing: I have verified that much by turning the
crank.<br>
<br>
The "original" Steve Allen<br>
Who is avoiding the local Menards<br>
<br>
<br>
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