You could also get a small computer fan and put it in the box to move air & cool the heat sinks. Radio Shack has them -
Larry T (67 MGB, 74 911, 78 240D, 91 300D) www.youroil.net for Oil Analysis and Weber Parts Test Results http://members.rennlist.com/oil PORSCHE POSTERS! youroil.net Weber Carb Info http://members.rennlist.com/webercarbs . ----- Original Message ----- From: "Curt Raymond" <[EMAIL PROTECTED]> To: "Diesel List" <mercedes@okiebenz.com> Sent: Thursday, January 03, 2008 9:50 AM Subject: [MBZ] OT: Electronics question > Okay electronic gurus: > Guy at work has a little Peltier device refridgerator. It uses 12v and has > a little powersupply that says its rated for 5000ma. He's burnt out 2 > powersupplies already, they only last a couple months. > I pulled the latest one apart and could find burn marks on 2 fairly large > (say 1/8") resistors and a small (I think) capacitor. > The design is interesting, its rectangular, not a wall wart, its got a > cord from the wall to a box. The largest components are two heatsinks > about 1/2" wide and maybe 3 1/2" long. It gets very hot when working, > almost too hot to touch. > > For the new one I suggested he take the old case and drill holes in it to > let the heat out. As a temporary fix he's using it with the top cover > removed. The two heatsinks get quite hot in operation. > > So the question: Is it likely that the heat killed the old one or is it > more likely that the box is operating so close to its maximum output it > just can't take it. > > -Curt > > > --------------------------------- > Never miss a thing. Make Yahoo your homepage. > _______________________________________ > http://www.okiebenz.com > For new parts see official list sponsor: http://www.buymbparts.com/ > For used parts email [EMAIL PROTECTED] > > To Unsubscribe or change delivery options go to: > http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.5.516 / Virus Database: 269.17.13/1207 - Release Date: 1/2/2008 > 11:29 AM > _______________________________________ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
