Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!usc!cs.utexas.edu!uunet!mcvax!kth!sunic!chalmers!tekno.chalmers.se!cth_co From: cth_co@tekno.chalmers.se (CHRISTER OLSSON) Newsgroups: comp.sys.ibm.pc Subject: Re: Power Supply Calculation: Message-ID: <898@tekno.chalmers.se> Date: 13 Aug 89 20:28:16 GMT References: <6566@cs.Buffalo.EDU> <7988@saturn.ucsc.edu> <7993@saturn.ucsc.edu> Organization: Chalmers Univ. of Technology, Gothenburg, Sweden Lines: 13 > You are probably safe to assume that an AT with two floppies,two HD's, > and eight slots full of cards will use aroung 80 percent of 200w, > or 160w...if you have one hd and five or so cards with two meg dram > you are probably drawing 100 w... get a clip-on ammeter and isolate > lance I run my AT (10Mhz with 640K onboard and 2Mbyte on an ext-card, 2 HD's (Nec 5126), 2 1.2M floppies, modemcard, Paradise EGA-card, 2 serial cards, 1 printer card and a DTC HD-controller ) with an old 100W PC-power supply... And i have an another machine without case but with a 50W power supply.. (It's a 8Mhz AT-mothercard with 640k memory, 2HD's (CMI 6640 and BASF 6188) , 1 360K floppy, IBM 64K EGA-card, multifunction-card and Adeptec 2010- controller). I'ld swap a fuse to get the power supply to work... :-)