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Re: IIe power supply voltages

Greg Andrzejewski wrote:

Hi,
I've been having stability problems with my IIe and suspected my "twist &
tape" power supply mod. This led me to wonder exactly to what degree do
voltages have to vary before you start seeing problems? Anyway here's what I
measured with my multimeter using a HD for load.

5v line = 5.27 V
-5v line = -5.00 V (dead on)
-12v line = -9.74 V (uh-oh)
+12v line = 11.23 V

I double checked the +5 and +12 lines with points on the still-connected PC
molex connectors and they were identical to those measured through the IIe
connector. So I hopefully can rule out any loss where I twisted and taped
the IIe connector onto wires from the power supply.



I don't know what the minimum voltages are you can get by with but the
IIe Techical Reference manual lists these power supply voltages.

+5V �3%
-5.2V �10%
+11.8V �6%
-12V �10%

Being 20% off on one 12V line would concern me too.


Wayne