Re: 3 Isolated AC Outputs from 1 AC Source

I speak "newbie" and I'm going to try to translate the following :)
(With reference to the movie Airplane... Old lady says..."I speak
Jive" )

On 11 Jan 2007 19:48:04 -0800, "jeff1981@xxxxxxxxxxxxxx"
<jeff1981@xxxxxxxxxxxxxx> wrote:

[snip]
I have a single power supply creating between 0 and 90V AC (Adjustable
in roughly 1V increments). I need to 'split' this current source into
THREE completely isolated AC Power Sources which are of equal voltage
to the input current (1:1).

Translation: I have a controllable AC supply and want to split that up
into 3 isolated outputs.

My thought is three simple transformers with 1:1 windings. All the
primary sides connected to the 0-90V Supply which would give me 3
isolated 0-90V Secondaries.
Translation: I'm looking for isolation transformers or a 1:1:1:1 that
can handle 90VACrms.

I only need about 20mA on each of the three outputs... 25 MAX.

Translation: I don't want a big honking transformer just something
that has a 20mA to 25mA rating.

So, My two questions...
1. Is this an appropriate solution to my problem?
and
Translation: What are the limitations of an isolation transformer? And
is this the only way?

2. Can anyone reccomend a small transformer (PCB Mount) that could
handle the task? I've searched a bit on Digi-Key and Mouser, but
frankly, I'm not even exactly sure what I'm looking for so its' a bit
hard to find.
Translation: How do you search for isolation transformers?


Thank You for your time!
Jeff

One way to best understand the newbie language is to block out
everything you know :)
D from BC
.

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