Power Supply capacitor physical size
Ian S. King
isking at uw.edu
Sat Sep 3 19:41:23 CDT 2016
I try very hard to match physical size and since, as has been noted, that
usually means higher working voltage, it's not a negative. If you're
preserving something as an historical artifact, be sure to document what
you've done! Otherwise, someone will be really confused 10-20 years from
now when, trying to maintain the machine, they see a different value on the
board than on the printset. :-) IMHO -- Ian
On Sat, Sep 3, 2016 at 10:07 AM, Adrian Graham <witchy at binarydinosaurs.co.uk
> On 03/09/2016 17:39, "Jon Elson" <elson at pico-systems.com> wrote:
> > On 09/03/2016 10:56 AM, Noel Chiappa wrote:
> >>> From: Jon Elson
> >>>> needs new caps since one of the 1000uF 16V ones has bulged badly.
> >>>> ...
> >>>> If I go up to 25V I can get 16mm diameter which is the size of the old
> >>>> ones.
> >>> Capacitors that are subjected to high AC ripple current may need the
> >>> large surface area for cooling.
> >> Interesting point - but in his particular case, he should be OK
> replacing the
> >> old 16V cap with a similar-sized modern 25V cap?
> > Similar size - then no problem! But, some new cap types are
> > VASTLY smaller than the caps from 40 years ago.
> Hence my question, I'll stick with the same size but higher voltage.
> Binary Dinosaurs creator/curator
> Www.binarydinosaurs.co.uk - the UK's biggest private home computer
Ian S. King, MSIS, MSCS, Ph.D. Candidate
The Information School <http://ischool.uw.edu>
Dissertation: "Why the Conversation Mattered: Constructing a Sociotechnical
Narrative Through a Design Lens
Archivist, Voices From the Rwanda Tribunal <http://tribunalvoices.org>
Value Sensitive Design Research Lab <http://vsdesign.org>
University of Washington
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