<div dir="auto">And in that latter case usually we put ptc fuses in line as well so we DON'T actually damage the supply or other modules.<div dir="auto"><br></div><div dir="auto">I do diy, not commercial modules, but the same logic applies.</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Oct 21, 2017 3:24 PM, <<a href="mailto:mskala@ansuz.sooke.bc.ca">mskala@ansuz.sooke.bc.ca</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On Sat, 21 Oct 2017, Ben Bradley wrote:<br>
> Do many or any Euro modules have reverse-polarity protection? It seems<br>
> easy enough to add a series Schottky rectifier in series with each<br>
> power line, but it adds parts cost and drops a little voltage where<br>
> people are already thinking the 12V supplies should be 15V.<br>
<br>
Many; not all. Some do it in other ways, such as with parallel diodes<br>
that will be reverse-biased in normal operation and effectively short out<br>
the power supply when the connection is backwards.<br>
<br>
--<br>
Matthew Skala<br>
<a href="mailto:mskala@ansuz.sooke.bc.ca">mskala@ansuz.sooke.bc.ca</a> People before principles.<br>
<a href="http://ansuz.sooke.bc.ca/" rel="noreferrer" target="_blank">http://ansuz.sooke.bc.ca/</a><br>
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