On Monday, March 25, 2002, at 10:26 , Gamba wrote: >> Finally, Gamba, I checked pin 8 of the (clearly labeled) "Clock >> Chip." :) The battery registers approx. 4.6 volts, while pin 8 of that >> chip registers approx. 3.6 volts. What does that tell you? (This was >> measured by putting the positive lead to pin 8, and touching the >> negative lead to the frame.) > > It looks like there is a diode in there, but (other shoe dropping) 1 V > is > more than I would have predicted for drop across a diode that has small > current. > I would have expected something more like 0.65V drop, which would be > 3.95V > on pin 8. > > Another possibility is that there is a resistor (or similar none > protective > circuit) in series with the battery. > > So if it's a diode the reverse battery shouldn't damage. > If it's a resistor then damage could occur. > > I guess I'm just gonna have to take my Plus apart and find out.
Thanks for your help, Gamba. I look forward to knowing what you find out. Eagle -- Compact Macs is sponsored by <http://lowendmac.com/> and... PowerON Computer Services <http://www.poweron.com> REPLACEMENT PARTS in STOCK Drives, CD-ROMs, RAM, Mac OS SW, Power Supply <mailto:[EMAIL PROTECTED]> Support Low End Mac <http://lowendmac.com/lists/support.html> Compact Macs list info: <http://lowendmac.com/lists/compact.shtml> The FAQ: <http://macfaq.org/> Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive:<http://www.mail-archive.com/compact.macs%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
