Re: Hayes Compatibility

[mjmahon@aol.com (Michael J. Mahon)]

Ned Ludd wrote:

>Bill Garber <willy4SPAM6pa@comXcast.net> wrote:
>
>> "Ned Ludd" <spam@luddite.ca> wrote in message
>> 1g2nb25.fnk8iv1hv2ummN%spam@luddite.ca">news:1g2nb25.fnk8iv1hv2ummN%spam@luddite.ca...
>> > Bill Garber <willy4SPAM6pa@comXcast.net> wrote:
>> >
>> > > My Mac version Sportster works on my IIgs. It's a small wedge
>> > > shaped white plastic box with 28.8 modem/33.6 fax. All the "AT"
>> > > commands work on it.
>> >
>> > Bill, can you let me know the voltage and polarity of your AC adaptor,
>> > I've always assumed that the 9-volt adaptor from my GVC should work on a
>> > USR, but now I'm wondering if this might be my problem...
>> 
>> The info straight from the PS box is:
>> 
>> Input:     120v AC - 60Hz - 16W
>> Output:  9v AC - 1000 mA
>> 
>> Since the output is AC, the polarity is a mute point.
>> Mine actually reads 11v AC with the red in the center
>> and 10.9v AC with the black in the center. I think you
>> have found your glitch. Glad to have been of help.
>
>Thanks Bill... never seen an AC/AC adaptor like that. Have to see what I
>can dig up at the junk shop.

Almost all external modems use an AC input, since they need
both positive and negative supplies to do RS232 signals.

-michael

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