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Thats good to know. I had problems with my Ensoniq Fizmo because of the cheap wall wart that came with it.
Lucifer
backshall1 <backshall1@...> wrote:
>Somehow, nobody seems to have pointed out the major differences between a
>modern-day regulated switching supply and an old fashioned large transformer
>type adapter.
>
>The old transformer type adapters are non-regulated, and the voltage varies
>with the current that is being used. If it is rated for 9VDC at 300ma, it
>probably measures 12-13 volts when nothing is plugged into it. The voltage
>will drop as you draw more current, and if your equipment really needs more
>than 300ma then the voltage will drop below 9 volts. A large transformer
>type adapter that is rated for 1000ma might measure as high as 20V with no
>load on it, and only drop to 15 volts with only a 300ma load on it. That
>might put a bit too much stress on the 9v to 5v regulator circuit inside the
>Poly-800.
>
>
>
>On the other hand, if you are using a newer switching-type adapter, it is
>probably much smaller since it does not need a big transformer in it, and it
>will put out a regulated 9V at any current level from 0-1000ma, so there is
>no problem using one rated for 1000ma. A/C adapters rarely have markings on
>them to show whether they are switching supplies or not. You can usually
>tell from the size. If not, just check the voltage output with nothing
>plugged into it. If it is 11 volts or higher, it is an old transformer type.
>If it is above 15 volts, then you may be shortening the life of some of the
>power transistors in the 5V regulator in the Poly-800.
>
>
>
>Don Backshall
>
>
>
> _____
>
>From: korgpolyex@yahoogroups.com [mailto:korgpolyex@yahoogroups.com] On
>Behalf Of Gordon JC Pearce
>Sent: Saturday, December 22, 2012 1:40 PM
>To: korgpolyex@yahoogroups.com
>Subject: Re: [korgpolyex] Re: New Power Adaptor for Poly 800 and question
>about multi mods (Hawk)
>
>
>
>
>
>On 22/12/12 06:45, Jill Saphic wrote:
>
>> thats what the manual says to use, and the KORG website..
>> You will damage your little plastic Poly800 seriously if you go above
>> 300MA, maybe not immediately, but it will be all about
>
>You know how your car battery can provide 200A or so to the starter
>motor? How come the little 200mA interior light doesn't blow up when
>you wire it across a 200A battery?
>
>--
>Gordonjcp MM0YEQ
>
>
>