At 19:02 +1000 10/23/2002, Paul Shand wrote: >ORANGE: P.G. (what does P.G. mean?)
PB = Power Good. This is a feedback of the 5V supply from the motherboard back to the PS. On power supplies where this feature is implemented, the PS will turn itself off, if the voltage on the PG line is out of bounds. For example, if PG was delivering 4.5V back to the PS, instead of 5V, that would probably indicate a short condition on the MB, and the PS will shut off to avoid smoking anything. From what I've heard, most cheaper ATX supplies don't really implement this feature in any useful way. >GRAY: PS-ON REV:2.03 (what does PS-ON REV 2.03?) PS-ON = Power Supply On. This is the Power-On line. On an ATX supply holding PS-ON at 5V keeps the PS turned off. Changing the PS-ON line to 0 V (i.e. GND) turns the power supply on. This is also the way our Umax power supplies handle power on. Apple Macintosh machines hold PS-ON at 0V to keep the supply off, and connect it to 5V to turn the PS on. This reversal makes adapting an ATX to an Apple machine a little more difficult, but not too challenging. Jeff Walther -- SuperMacs is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | Service & Replacement Parts [EMAIL PROTECTED] | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> SuperMacs list info: <http://lowendmac.com/supermacs/list.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:supermacs@;mail.maclaunch.com> To unsubscribe, email: <mailto:supermacs-off@;mail.maclaunch.com> For digest mode, email: <mailto:supermacs-digest@;mail.maclaunch.com> Subscription questions: <mailto:listmom@;lemlists.com> Archive: <http://www.mail-archive.com/supermacs%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
