RE: 9VAC from 5VDC?

From: Bil Herd <>
Date: Fri, 13 Sep 2013 23:12:37 -0400
Message-ID: <>
I don't believe DC to AC convertors are very common, I have always had to
make one with the small handful of parts I mentions.  A transformer by
itself won't do anything (but get warm)if connected to 5VDC on its input.
You could use a transformer from the AC mains 117AC to 9VAC  and it would
be floating as well.

-----Original Message-----
[] On Behalf Of john/lori
Sent: Friday, September 13, 2013 11:09 PM
Subject: Re: 9VAC from 5VDC?

> I want something I can buy, as I assume, if this works, lots of people
> with dodgy PSUs will want to replicate it.  I could double/triple the
> voltage using a doubler/tripler and use a 1:1 isolation if needed, if
> a
> 1:1 was easily sourceable, and a 1:2 was not, but that's more
> components and more things to solder up incorrectly.
> So, a nice 1:2 or 1:3 transformer that will work in the use case would
> be ideal, something I can buy off the shelf.
> Jim
>       Message was sent through the cbm-hackers mailing list

I'm sure if you went and poked around Digikey you could find a nice off
the shelf, isolated 5VDC to +- 12 or 15 VDC, board mounted converter that
would supply a couple hundred ma.
God only knows what it would cost. Your first born or the pound of flesh
nearest your heart or something.

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Received on 2013-09-14 04:01:04

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