Re: 9VAC from 5VDC?

From: silverdr_at_wfmh.org.pl
Date: Mon, 16 Sep 2013 23:33:26 +0200
Message-Id: <58E59308-CD6A-456B-8580-73E25C08E034@wfmh.org.pl>
On 2013-09-16, at 23:10, Bil Herd wrote:

> Given how cheap a 9VAC wall-mount transformer I, why would it not be
> better than a 5VDC-9VDC convertor?

Not geeky enough? ;-)

>  Also the 5v supply would need to
> handle an addition 1.25 Amps at a guess, what is the 5V supply in this
> case?

Small 3A switchers are used as dog stones these days...

> Typically circuits that use a sign wave are concerned with the
> zero-crossing point and not so much the peak or what the shape is near the
> peak.  Not saying all uses do this, it is just my experience to-date.

That's the case - we don't know exactly what may want to use this AC so it would be good to have it reasonably shaped. I don't say "perfect" but - exactly - clean cross and not overly sharp edged/rectangular.
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Received on 2013-09-16 22:00:54

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