Having a reversable header fixes the problem of people blowing up their modules. I’m not getting why that’s a bad idea and why we should all use a “Universal standard specific”? It uses the same headers Eurorack has used since Doepfer decided on it. The only issue people are having is plugging the damn thing red strip up and burning out their modules.<div><br></div><div><br></div><div>If we want to talk about designing a better more stable, professional, clean, laboratory power supply and solid power connections cool. But I’m only witnessing one major issue with the current format and thats plugging in a header backwards. I made a suggestion that would work to solve that...fuses and protection diodes would be another approach.</div><div><br></div><br><div>Kylee<br><div><br></div><div><br></div><div><br><br>On Sunday, October 22, 2017, Laurie <<a href="mailto:elby_designs@ozemail.com.au">elby_designs@ozemail.com.au</a>> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">No they shouldn't, they should use a single recognised 'universal' 'standard' 'specified' connector.<br>
Once again people are 'closing the door after the horse has bolted'. Fix the problem so it can't happen in the first place.<br>
<br>
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On 22/10/2017 2:11 PM, Kylee Kennedy wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Neutron Sound has a reversable header on his newer modules. His designs are open source so people should borrow it and use it in their own designs.<br>
<br>
<br>
Kylee<br>
<br>
On Saturday, October 21, 2017, Mike HEQX <<a>mike@heqx.com</a> <mailto:<a>mike@heqx.com</a>>> wrote:<br>
<br>
Why can't gear run on anything you plug in either polarity dc or<br>
ac. Using a diode bridge as protection should allow you to do<br>
this. Some of my gear will run on anything you plug in. I love that.<br>
<br>
On 10/21/2017 5:59 PM, <a>axisair@comcast.net</a><br>
<javascript:_e(%7B%7D,'cvml','<a><wbr>axisair@comcast.net</a>');> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Two parallel diodes reverse biased won't short out the supply,<br>
they just wont allow current to get to the circuit.<br>
For the price of about $0.015, I just use four 1N914 small signal<br>
diodes in a full wave bridge configuration. That just supplies<br>
the correct power to the rest of the circuit regardless of if the<br>
polarity is reversed. The voltage drop from the mains is 0.6V to<br>
0.7V per leg. Minimal drop considering the existing overhead.<br>
Since they're small signal diodes, they can handle around 1/3A<br>
and have less reverse bias leakage (and cost less) than 1N40XX<br>
series. They also double as a fusible link if the circuitry faults.<br>
Obviously, if they connect everything correctly, two diodes just<br>
sit there.<br>
<br>
<br>
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-----Original Message-----<br>
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From: <a>pete.hartman@gmail.com</a><br>
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To: <a>mskala@ansuz.sooke.bc.ca</a><br>
<javascript:_e(%7B%7D,'cvml','<a><wbr>mskala@ansuz.sooke.bc.ca</a>');><br>
Cc: <a>synth-diy@synth-diy.org</a><br>
<javascript:_e(%7B%7D,'cvml','<a><wbr>synth-diy@synth-diy.org</a>');><br>
Sent: 2017-10-21 2:41:48 PM<br>
Subject: Re: [sdiy] Euro Synth Spec<br>
<br>
And in that latter case usually we put ptc fuses in line as well<br>
so we DON'T actually damage the supply or other modules.<br>
<br>
I do diy, not commercial modules, but the same logic applies.<br>
<br>
On Oct 21, 2017 3:24 PM, <<a>mskala@ansuz.sooke.bc.ca</a><br>
<javascript:_e(%7B%7D,'cvml','<a><wbr>mskala@ansuz.sooke.bc.ca</a>');>> wrote:<br>
<br>
On Sat, 21 Oct 2017, Ben Bradley wrote:<br>
> Do many or any Euro modules have reverse-polarity<br>
protection? It seems<br>
> easy enough to add a series Schottky rectifier in series<br>
with each<br>
> power line, but it adds parts cost and drops a little<br>
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<br>
parallel diodes<br>
that will be reverse-biased in normal operation and<br>
effectively short out<br>
the power supply when the connection is backwards.<br>
<br>
--<br>
Matthew Skala<br>
<a>mskala@ansuz.sooke.bc.ca</a><br>
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