If they have been sitting around unused for many years, yes reforming would
be a good idea. I so no reason why you can't do it in the supply - as you
say, raising the voltage slowly over time. The reason for that is to stop
heat build-up that could damage them.
I'm sure there is a lot more on reforming on the web, alond with some
reforming circuits, from people with a lot more experience on the subject
than me.
Ken
at least seem recent enough (ranging from ~5-30 years old), though should I
bother reforming them? Could I do that while burning in the fully built
supply, slowly raising the input voltage to 120V?
rating otherwise I'd have gone by that. Even if they were there, knowing
'why' is good too.<br><br>A follow up capacitor question: the big
electrolytics I picked up for my power supply, as per the design on your
site Ken, from physical inspection at least seem recent enough (ranging from
~5-30 years old), though should I bother reforming them? Could I do that
while burning in the fully built supply, slowly raising the input voltage to
120V?<br><br>My thanks sir!<br><br><br>_Kyle<br><br>--- On <b>Fri, 6/18/10,
sasami@... <i><sasami@...></i></b>
wrote:<br><blockquote style="border-left: 2px solid rgb(16, 16, 255);
margin-left: 5px; padding-left: 5px;"><br>From: sasami@...
<sasami@...><br>Subject: Re: [tubesynthdiy] Capacitor
Voltage Ratings<br>To:
href="/mc/compose?to=sasami%40hotkey.net.au">sasami@...</a> <a
rel="nofollow" ymailto="mailto:otherunicorn%40virginbroadband.com.au"
target="_blank"
href="/mc/compose?to=otherunicorn%40virginbroadband.com.au">otherunicorn@vir
ginbroadband.com.au</a><br>
href="http://www.blaze.net.au/%7Esasami/">http://www.blaze.net.au/~sasami/</
a>><br>
Ken Stone sasami@... otherunicorn@...
Modular Synth PCBs for sale <http://www.cgs.synth.net/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>
be a good idea. I so no reason why you can't do it in the supply - as you
say, raising the voltage slowly over time. The reason for that is to stop
heat build-up that could damage them.
I'm sure there is a lot more on reforming on the web, alond with some
reforming circuits, from people with a lot more experience on the subject
than me.
Ken
>I see - makes sense. Eric's designs didn't have a rating otherwise I'd havegone by that. Even if they were there, knowing 'why' is good too.
>power supply, as per the design on your site Ken, from physical inspection
>A follow up capacitor question: the big electrolytics I picked up for my
at least seem recent enough (ranging from ~5-30 years old), though should I
bother reforming them? Could I do that while burning in the fully built
supply, slowly raising the input voltage to 120V?
>spare" would
>My thanks sir!
>
>
>_Kyle
>
>--- On Fri, 6/18/10, sasami@... <sasami@...> wrote:
>
>From: sasami@... <sasami@...>
>Subject: Re: [tubesynthdiy] Capacitor Voltage Ratings
>To: tubesynthdiy@yahoogroups.com
>Date: Friday, June 18, 2010, 4:54 PM
>
>
>
>
>
>
>
>Â
>
>
>
>
>
>
>
>
>
> The "greater than the DC voltage it will see, plus at least 20%
>style="font: inherit;">I see - makes sense. Eric's designs didn't have a
>be the first rule. Be aware that a capacitor can see more than the power
>
>rail voltage in some circumstances (i.e charged in one direction, then
>
>having the opposite voltage applied it). Double the DC voltage is good. The
>
>value specified on the circuit diagram (if present) is ideal.
>
>
>
>Ken
>
>__________________________________________________________
>
>Ken Stone sasami@... otherunicorn@...
>
>Modular Synth PCBs for sale <http://www.cgs.synth.net/>
>
>Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>
>
>
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rating otherwise I'd have gone by that. Even if they were there, knowing
'why' is good too.<br><br>A follow up capacitor question: the big
electrolytics I picked up for my power supply, as per the design on your
site Ken, from physical inspection at least seem recent enough (ranging from
~5-30 years old), though should I bother reforming them? Could I do that
while burning in the fully built supply, slowly raising the input voltage to
120V?<br><br>My thanks sir!<br><br><br>_Kyle<br><br>--- On <b>Fri, 6/18/10,
sasami@... <i><sasami@...></i></b>
wrote:<br><blockquote style="border-left: 2px solid rgb(16, 16, 255);
margin-left: 5px; padding-left: 5px;"><br>From: sasami@...
<sasami@...><br>Subject: Re: [tubesynthdiy] Capacitor
Voltage Ratings<br>To:
> tubesynthdiy@yahoogroups.com<br>Date: Friday, June 18, 2010, 4:54PM<br><br><div id="yiv2065612811">
>spare" would<br>
>
>
>
>
><span style="display: none;"> </span>
>
>
>
> <div id="ygrp-text">
>
>
> <p>The "greater than the DC voltage it will see, plus at least 20%
>be the first rule. Be aware that a capacitor can see more than the power<br>target="_blank"
>rail voltage in some circumstances (i.e charged in one direction, then<br>
>having the opposite voltage applied it). Double the DC voltage is good. The<br>
>value specified on the circuit diagram (if present) is ideal.<br>
><br>
>Ken<br>
>__________________________________________________________<br>
>Ken Stone <a rel="nofollow" ymailto="mailto:sasami%40hotkey.net.au"
href="/mc/compose?to=sasami%40hotkey.net.au">sasami@...</a> <a
rel="nofollow" ymailto="mailto:otherunicorn%40virginbroadband.com.au"
target="_blank"
href="/mc/compose?to=otherunicorn%40virginbroadband.com.au">otherunicorn@vir
ginbroadband.com.au</a><br>
>Modular Synth PCBs for sale <<a rel="nofollow" target="_blank"href="http://www.cgs.synth.net/">http://www.cgs.synth.net/</a>><br>
>Australian Miniature Horses & Ponies <<a rel="nofollow"target="_blank"
href="http://www.blaze.net.au/%7Esasami/">http://www.blaze.net.au/~sasami/</
a>><br>
><br>_______________________________________________________________________
></p>
>
> </div>
>
>
>
>
>
>
>
></div></blockquote></td></tr></table><br>
>
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></body>
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>
Ken Stone sasami@... otherunicorn@...
Modular Synth PCBs for sale <http://www.cgs.synth.net/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>