Hi, Farnell (www.farnell.co.uk) seem to have a good selection (though the prices seem a little high). Andy ----- Original Message ----- From: "Michael Rigby-Jones" To: Sent: Tuesday, January 30, 2001 11:30 AM Subject: Re: Microchip Power Bricks > > -----Original Message----- > > From: Dwayne Reid [SMTP:dwayner@PLANET.EON.NET] > > Sent: Tuesday, January 30, 2001 9:32 AM > > To: PICLIST@MITVMA.MIT.EDU > > Subject: Re: Microchip Power Bricks > > > > At 08:23 AM 1/30/01 +0000, Michael Rigby-Jones wrote: > > >I have had two of the Microchip 9 volt power bricks die on me in the last > > 6 > > >months. These are the ones used for most of Microchips dev tools, the > > Pic > > >Start Plus, ICD etc. Microchip have replaced them but I was just > > wondering > > >if anyone else has seen this problem? I did take one apart "just to see > > >what was inside" and it's a tiny switch mode supply. A non-functional > > one > > >had nothing visibly burnt etc. but I didn't get time for a full analysis. > > > > What is your mains supply? I have been using several of those for many > > years now at 120 Vac with no failures to date. Are you on a 230Vac > > supply? > > > > If I recall correctly, someone else has also had failures on those. I > > *think* that a fusible resistor was the culprit. BTW - he was using 220 - > > 230Vac supply. > > > > dwayne > > > I am using a nominal 230v supply in the UK. The first brick failed > completely which was an obvious failure. The second measures 9v off load, > but when plugged into our Pro Mate production programmer, just has enough > power to light the LCD backlight, but thew programmer itself dosen't work. > I assumed the programmer had broken, and I've been meaning to get around to > returning it until I thought to try a different PSU on it. > > Anyone know a source of *reliable* 9v only regualted supplies, that are > easily obtainable? I'd rather not use the variable voltage ones that most > stores stock. Turning them up to 12 volts (as someone is bound to do) might > not be healthy for the dev tools :o) > > Mike > > -- > http://www.piclist.com#nomail Going offline? Don't AutoReply us! > email listserv@mitvma.mit.edu with SET PICList DIGEST in the body > > -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body