Dragon32 Power-Supply

[John Honniball]

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 at gifford.co.uk