<font size=2 face="sans-serif">Hi:</font>
<br>
<br><font size=2 face="sans-serif">For such a small amount of power you
could consider using an energy limiting Class2 transformer as is/was used
in old doorbells. You would have to put a bridge rectifier and bulk
capacitor on the output to make DC, but that should be ok given the power
levels. If you do this, make sure that the bridge rectifier and capacitor
are physically very close to the transformer to reduce problems with diode
reverse recovery losses which can stress the parts.</font>
<br>
<br><font size=2 face="sans-serif">Here's a link to Hammond transformers
of that type, although they are no doubt available from many sources at
most electrical supply houses.</font>
<br>
<br><a href=http://www.hammondmfg.com/ba.htm><font size=2 color=blue face="sans-serif">http://www.hammondmfg.com/ba.htm</font></a>
<br>
<br><font size=2 face="sans-serif">JARMO <br>
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<table width=100%>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">From:</font>
<td><font size=1 face="sans-serif">"Dave" <dave@independentpowerllc.com></font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">To:</font>
<td><font size=1 face="sans-serif">"'RE-wrenches'" <re-wrenches@lists.re-wrenches.org>,
</font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">Date:</font>
<td><font size=1 face="sans-serif">01/29/2015 10:58 AM</font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">Subject:</font>
<td><font size=1 face="sans-serif">Re: [RE-wrenches] Low wattage 120vac
to 24vdc transformer for LED's</font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">Sent by:</font>
<td><font size=1 face="sans-serif">"RE-wrenches" <re-wrenches-bounces@lists.re-wrenches.org></font></table>
<br>
<hr noshade>
<br>
<br>
<br><font size=2 face="Calibri">We are renovating a 25 yr old off grid
house and one of things being done is to change some 24vDC circuits to
120vac. The only problem that I'm having is finding a low wattage 120vac
to 24vdc transformer for a few strings of 24v LED night lights (a few watts
each string) that are built into some nice hardwood trim in the bedrooms.</font>
<br><font size=2 face="Calibri">I just tested the following device and
found that it uses 29 Watts to power a 3W LED. Not an acceptable load for
this house. It is labeled as LED Magnetic Transformer by National Specialty
Lighting part # TR24L20DC-M20L24DC-AR Input: 120vac, Output 24vdc, Maximum
20W</font>
<br><font size=2 face="Calibri">Is there anything else available that will
do this job and use a lot less power than 29 Watts?</font>
<br><font size=2 face="Calibri"> </font>
<br><font size=2 face="Calibri">Thanks,</font>
<br><font size=2 face="Calibri">Dave</font>
<br><font size=2 face="Calibri"> </font>
<br><font size=2 face="Calibri">David Palumbo </font>
<br><font size=2 face="Calibri">Independent Power LLC</font>
<br><font size=2 face="Calibri">462 Solar Way Drive</font>
<br><font size=2 face="Calibri">Hyde Park, VT 05655</font>
<br><font size=2 face="Calibri">802-888-7194</font>
<br><font size=2 face="Calibri"> </font>
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