Electronic components sources

>> However, a DPST (breaks both live and neutral) is safer IMHO

>> -----Original Message----- >> From: cctalk-bounces(a)classiccmp.org >> [mailto:cctalk-bounces@classiccmp.org] On Behalf Of Tony Duell >> Sent: Monday, March 22, 2004 7:38 PM >> To: cctalk(a)classiccmp.org >> Subject: Re: Electronic components sources >> >> > >> > >>>>> "Mark" == Mark Tapley <mtapley(a)swri.edu> writes: >> > >> > Mark> Erik Klein wrote: >> > >> ...The other item I have is a DEC Rainbow with a >> busted power >> >> > switch. The switch a fairly typical wide rocker style in >> gray >> >> > plastic with a 1 and a 0 printed on it. Again, I can >> replace it >> >> > but I'd like a "correct" part if anyone has a source, >> part number >> >> > or spare. >> > >> > Mark> This is a reasonably common failure - mine has the >> same problem >> > Mark> (replaced by two SPST's side-by-side which I take pains to >> > Mark> throw simultaneously) and I've read of at least one other >> >> Has anybody tried taking the original switch apart and >> cleaning the contacts (if that's the failure mode)? I'vc >> repaired switches in other equipment that way. >> >> > Mark> (years ago, on this list). When/if they are found, >> please post >> > Mark> on the list - I'll definitely want one too. >> > >> > In the US, just one SPST should suffice, if it's in the live wire. >> > You need DPST switches in much of Europe because there you find >> > unpolarized outlets. >> >> However, a DPST (breaks both live and neutral) is safer >> IMHO. In the UK we have poilarised mains sockets, but I >> still always fit double-pole switches in stuff I've >> designed myself, just in case the socket is wired >> backwards, or whatever. >> >> I am also looking for a rocker switch, but a much smaller >> one. It's the type used in the HP98x0 calculators (and also >> the 9885 disk drive, 9877 tape drive, 9866 printer, and >> doubtless many other devices). It's DPDT and has 2 miunting >> lugs for 4-40 screws. I can provide dimensions if anyone >> thinks they know a supplier. >> >> -tony