My experience with AC adaptors for use with a Sharp MD is that it is
necessary to get the regulated type if you want to record to MD and/or
charge NiMH batteries. Unregulated types just dip too much on the variable
loads an MD poses, so choose one with a regulated 5V 700mA output (or
whatever your MD needs).
Not being able to find a low-cost regulated unit, I made one by fitting an
LM340T-5 regulator inside an unregulated 9V 700mA brick and changing the
power connector on the output lead. If you try this route, you need to make
sure you have a good thermal connection between the regulator and a heat
sink because it may have to dump several Watts. Also, the dc power connector
that Sharp use is not one of the common sizes.
Peter Rice
>
>I bought my Sharp 831 last year while I was living in France, but now I'm
>back in the US. Unfortunately, Sharp supplied an AC adapter that only works
>on European voltages (does not support 60 HZ / 110v), which seems rather
>surprising for a device as portable as a minidisc player. Anyway, I'm
>planning to get a universal AC adapter from Radio Shack (or similar), but
>first I just wanted to check whether anyone on the list had had any bad
>experiences with universal AC adapters on Sharp 831s, or whether anyone
>knows a good source for "official" Sharp adapters.
>
>Thanks,
>
>Gerry
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