At 11.49 2011.08.16, you wrote:
>> By the way, I do not understand why all the bench PSU I've seen so far
>> source current, never sink it.
>
>That is because they are power supplies, and supplies only source=20
>things ... ;)))
>=20
>> Recently I needed to simulate a stator, that's the kind of things where
>> a programmable DC/AC PSU would be great.
>
>Look at the Keithley Sourcemeter series of instruments. They will=20
>source or sink current, at positive or negative voltage to do the best=20
>to keep the voltage across its pins at what you set. They also make=20
>excellent power supplies for doing Microprocessor based projects.
>
>http://www.keithley.com/main.jsp
>
>The instruments to look for are 2400 series, 2600 series, and there is=20
>a new high powered series shown in the Flash front page. There may be=20
>some more series in the Sourcemeter range, it is a while since I last=20
>looked at them.

It's very nice, but even just a 2400 used has prices above US$ 3000.. too
much for me. :(

I will follow the signal generator + power amp route, at least it's much
cheaper. :D

--=20
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