Power Pack for Disk Drives

Repairing, upgrading and maintaining the Adam Disk Drive
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Sixthview
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Power Pack for Disk Drives

Post by Sixthview » Sun Dec 08, 2019 6:24 am

I was going to start poking around the old manuals, but does anyone know the specs for the power pack for the disk drive off the top of their head?

I know it is 9V. But I am wondering what the AMPs are and also center positive or negative? :?:

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Milli
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Re: Power Pack for Disk Drives

Post by Milli » Sun Dec 08, 2019 9:37 am

Its 9v AC - you can use one that was made for an Atari 400 / 800. There is no positive or negative.

http://www.best-electronics-ca.com/power%20guide.htm

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Sixthview
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Re: Power Pack for Disk Drives

Post by Sixthview » Wed Dec 11, 2019 6:11 am

And now I am even more confused. LOL
It is probably due to my life as a guitar player and using and building pedals that run 9v power in place of a battery. Usually you have a center that is positive or negative but I think that is converting the AC to DC.

So this power supply is AC straight through?

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Re: Power Pack for Disk Drives

Post by Milli » Thu Dec 12, 2019 10:06 am

With AC there is no dedicated negative or positive, they "alternate" - hence Alternating current :D
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Re: Power Pack for Disk Drives

Post by MrPix » Wed Feb 19, 2020 7:51 pm

Which means you can also use a 9v DC supply and the polarity will be corrected by the bridge rectifier. Boom!

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