[nightsky]

Originally Posted by RAJAH235

I can only reply with, "Why did you not buy the recommended & cheaper 5 AMP unit when advised that anything less than 1.5 AMPS might not supply enough current"?
FWIW. The centre pin is usually POSITIVE, as Paul has already advised, but check with DMM first...
L.
ps. I only hope you do not burn out the smaller 800 mA unit.

The only reason I did not buy the the one suggested was because I had asked in this form "How do I connect that to the scopes jack" and was told I would have to "cut" of the end (see Andrews reply)and attach the necessary lead from it to the scope, as I'm not mechanically minded and did not want to mess around with wires I give that one a miss, Also I was advised in this form to get at least "800mA" which the I bought is.I will only be useing it for the Telescope there will be no othe devices connected.the Laptop will be run directly from it's own adapter to the house power point extension cable.if anyone can suggest another model that I "DON'T have to mess around with cutting off wires,and it plugs straight into the scope please let me know, as I can always exchange the one I have, as I am still running the scope off 8AA battries. and thanks all for your replies BTW what does "DMM" stand for.