[Dixielandjazz] Technical help requested

[Robert Smith]

Hello Don,

I'm afraid you're confusing poor ol' Bill a bit in your reply. The two 
important things with an adapter are the voltage (in Bill's case 9 volts) 
and the polarity. The adapter voltage must always be equal to that stated on 
the apparatus, and plus must go to plus in the contacts especially when it's 
electronic equipment that's being supplied with power. After this the reason 
for labelling the amperage on the adapter, i.e. 50 milliamps, is that the 
apparatus mustn't need more than this amperage, otherwise the effective 
voltage will drop, thus leading to distortion or lack of output. The fact 
that the adapter can deliver much more amperage (current) than this is 
irrelevant, because the apparatus will only take the amperage stated on the 
apparatus label.
The upshot of this is that Bill doesn't need to buy a new adapter, the one 
he's got will serve him ad infinitum, without damaging his keyboard.

Cheers, and good fishin'

Bob Smith