Re: 3.3v supplies in PowerCC -- Welcome to the Colo(u)r Classic Forum

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Date Posted: 02:01:47 04/14/01 Sat
Author: John Stocker
Subject: Re: 3.3v supplies in PowerCC
In reply to: Stuart Bell 's message, "3.3v supplies in PowerCC" on 15:02:25 04/13/01 Fri

Initially I had improperly installed my 3.3v regulator. The point of confusion happened when I'd measure voltage with the 6500 board installed without realizing the board itself was generating the results.

My problem is I had read a schematic literally, and misidentified the pins on my LT1585 regulator as

left pin 5V input
center pin ground
right pin 3.3V output

when the real configuration was actually

left pin ground
center pin 3.3V output
right pin 5V input

After correcting this rediculous blunder all my 630-esque boards worked fine in my PCC (6500, 5400, 630)

I hope this helps

>As I'm wondering if the 3.3v supply is the cause of my
>PCC working with a 5200 and 6500 board, but not 6400
>and 5400 boards (see thread below), I'd be graeful for
>information on the devices (and rating thereof) which
>people have used to generate 3.3v in their PCC.
>
>Thanks,
>
>Stuart.

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Replies:

Re: 3.3v supplies in PowerCC -- Stuart Bell, 02:09:41 04/14/01 Sat
- Re: 3.3v supplies in PowerCC -- John Stocker, 02:52:25 04/14/01 Sat
  - Re: 3.3v supplies in PowerCC -- Stuart Bell, 03:39:11 04/14/01 Sat