Any reason you couldn't use a simple step-down transformer, maybe 1:12?

If we cannot afford to take care of Veterans, then we should stop making them.
David C. Wilker Jr.
USAF (RET)




On Thu, Nov 12, 2009 at 15:00, Clark Martin <[email protected]> wrote:
>
> Istarian wrote:
>> If you'll note I said it specified 9 volts AC, not DC. I'm guessing
>> this has something to do with being connected to the phone line. If
>> you know otherwise, feel free to clarify.
>
> 9 VAC is used because you can get + and - supply voltages from it
> without using an inverter circuit.  The minus supply is needed for the
> serial port.  Nothing to do with the phone line.
>
>>
>> On Nov 9, 5:37 pm, Wolf <[email protected]> wrote:
>>> most cordless telephone sets run on 9 volt DC adapters
>>>
>>> On Mon, Nov 9, 2009 at 3:41 PM, Istarian <[email protected]> wrote:
>>>
>>>> So, I picked up an old modem for seventy-five cents with what appears
>>>> to be a mac cable. It's a DB-25 to 8pin mini-din cable. The modem is a
>>>> Practical Peripherals MC144MT II (14.4kbps). Can this be used with all
>>>> serial port macs (I have an LCII and a Performa 6100/66)? And does
>>>> anyone know where I can get an inexpensive 9v AC 1A wall plug power
>>>> supply so I can see if it turns on?
>
>
>
>
> --
> Clark Martin
> Redwood City, CA, USA
> Macintosh / Internet Consulting
>
> "I'm a designated driver on the Information Super Highway"
>
> >
>

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