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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>There is also schematics for one of these
on the NSRCA website….by Tom Wheedon.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Tony Stillman, President</span></font><font
color=navy><span style='color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Radio South, Inc.</span></font><font
color=navy><span style='color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>139 Altama Connector, <st1:address w:st="on"><st1:Street
w:st="on">Box</st1:Street> 322</st1:address></span></font><font color=navy><span
style='color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><st1:place w:st="on"><st1:City w:st="on"><font size=2
color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'>Brunswick</span></font></st1:City><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>, <st1:State
w:st="on">GA</st1:State> <st1:PostalCode w:st="on">31525</st1:PostalCode></span></font></st1:place><font
color=navy><span style='color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>1-800-962-7802</span></font><font
color=navy><span style='color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>www.radiosouthrc.com</span></font><o:p></o:p></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
nsrca-discussion-bounces@lists.nsrca.org
[mailto:nsrca-discussion-bounces@lists.nsrca.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Steven Maxwell<br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, May 21, 2009 11:49
AM<br>
<b><span style='font-weight:bold'>To:</span></b> General pattern discussion<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [NSRCA-discussion]
Foam cutter power supply</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>simple and works.<o:p></o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><a
href="http://www.charlesriverrc.org/articles/tools/joedydruliafoamcutterps.htm">http://www.charlesriverrc.org/articles/tools/joedydruliafoamcutterps.htm</a><o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>Steve Maxwell<br>
<br>
--- On <b><span style='font-weight:bold'>Thu, 5/21/09, J N Hiller <i><span
style='font-style:italic'><jnhiller@earthlink.net></span></i></span></b>
wrote:<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><br>
From: J N Hiller <jnhiller@earthlink.net><br>
Subject: Re: [NSRCA-discussion] Foam cutter power supply<br>
To: "General pattern discussion"
<nsrca-discussion@lists.nsrca.org><br>
Date: Thursday, May 21, 2009, 11:40 AM<o:p></o:p></span></font></p>
<div id=yiv2109284586>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
class=emailstyle15><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I remember reading about using two
dimmers. I believe the reason for using two is to get a more sensitive
adjustment near the voltage (15) we need. I have used a single dimmer for
mane years, which worked sort of. It wouldn't turn on below about 25 v but
could be adjusted down to 15 without shutting off. The cure was to load the
dimmer with a light bulb <u>connected in series</u> with the wire and dimmer.
A 300 w bulb greatly reduced the sensitivity of the dimmer. The voltage
across the light bulb is around 75 loading the dimmer to about 3/4 full on
for very broad adjustment, 150 probably would have been enough.</span></font></span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
class=emailstyle15><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>There is a shock (electrocution) hazard
using household current. Although I haven't tested it I have a GFI outlet in
my shop that I use. The transformer based power supplies isolate and separate
the household (primary) from the secondary output voltage eliminating
possible contact with household current. If I didn't already have a usable
power source I would just buy one (plug & play).</span></font></span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
class=emailstyle15><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Jim Hiller </span></font></span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
class=emailstyle15><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
class=emailstyle15><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
class=emailstyle15><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=2 color=black face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:black'>-----Original
Message-----<br>
<b><span style='font-weight:bold'>From:</span></b> nsrca-discussion-bounces@lists.nsrca.org
[mailto:nsrca-discussion-bounces@lists.nsrca.org]<b><span style='font-weight:
bold'>On Behalf Of </span></b>Paul LaChance<br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, May 21, 2009
1:26 AM<br>
<b><span style='font-weight:bold'>To:</span></b> NSRCA Mailing List<br>
<b><span style='font-weight:bold'>Subject:</span></b> [NSRCA-discussion] Foam
cutter power supply</span></font><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>Hi all,</span></font><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'> </span></font><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>I was told about a way to make a power
supply for a foam cutter using 2 dimmer switches. I was also told to
measure the final voltage to get an approximate starting point of 15
volts. I am not getting a voltage change with the dimmers. I have
tested to see that there is a difference by using a drill to see that it is
reducing the speed. Does anyone know how I can measure to get a
starting point or is it going to be trial and error? </span></font><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'> </span></font><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>Thanks in advance,</span></font><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'> </span></font><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>Paul</span></font><o:p></o:p></p>
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face="Times New Roman"><span style='font-size:12.0pt'><br>
-----Inline Attachment Follows-----<o:p></o:p></span></font></p>
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