23 Nov
2004
23 Nov
'04
5:54 a.m.
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
coredump(a)gifford.co.uk