Dragon32 Power-Supply

From: John Honniball <coredump_at_gifford.co.uk>
Date: Tue Nov 23 13:54:57 2004

Dave Dunfield wrote:
> Can anyone give me the pinout and details of the power
> supply used on the Dragon32 (have a machine with no
> supply) - It has a 9-pin 'D' connector on the back of
> the machine for the power input!

OK, I've just got my machine down from the loft and had a look
for the manual -- but I don't have a manual! So, time to test
it with a meter...

Pin 1 joined to Pin 6, one side of 8.5V AC Red
Pin 2 joined to Pin 7, other side of 8.5V AC Black
Pin 3 14V AC Yellow
Pin 4 0V White
Pin 5 14V AC Blue

The two 14V AC windings form a centre-tapped 28V winding, which
according to the label on the transformer is rated at 250mA. The
8.5V winding is rated 1.5A. The actual voltages I measured were
8.9V and 14.3V (twice), so they're slightly higher off-load. The
9-pin 'D' connector on the end of the PSU cable is a female. The
PSU itself is clearly just a transformer in a white plastic box.

John Honniball
Received on Tue Nov 23 2004 - 13:54:57 GMT

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