Re: [CAD_CAM_EDM_DRO] Another Power Supply Question.

----- Original Message -----
From: Jon Elson <jmelson@...>

> I think the supply may float this, but the motherboard ties it to frame
> ground. It would be easy to check with an ohmmeter, however.
>
> Jon
>
Of course it never occurred to me to check it with a DMM. So, I just
checked two computers. One shows 8 millivolts between -5DC and the chassis.
The other shows 4 mV. With the power off I get 0 ohms from -5V to the
chassis on both computers. Then I checked a PC power supply not connected
to a motherboard. 0 ohms from black to frame.

So, I guess it is grounded at the power supply.

Doug