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> > > 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. > > Cheers! > > -- > Adrian/Witchy > Binary Dinosaurs creator/curator > Www.binarydinosaurs.co.uk - the UK's biggest private home computer > collection? > > > -- 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 There is an old Vulcan saying: "Only Nixon could go to China."