Re: Resistor vs transformer

On Wed, 8 Feb 2006 10:59:01 +1100, "Phil Allison"
<philallison@xxxxxxxxxx> wrote:


<bill.sloman@xxxxxxxx>

** DA SLOW MAN " strikes again.....


No. Get a transformer with a dual 115V+115V primary, connect the
primaries in seires, and hook your fire alarm across one of the
primaries. Ignore the secondary windings.

Cost goes by size, but 6VA transformers have rotten regulation. The
2002 Farnell catalogue lists a 12VA part (stock number 159-591) whcih
cost 6.58 euro and would presumably do the job,


** Shame it only has a single 230 volt primary:

http://au.farnell.com/jsp/endecaSearch/searchPage2.jsp?Ntt=159-591&Nty=1&N=401&Ntk=gensearch


LOL

Should work in any case. Bill had probably this in mind - Connecting
the secondaries in series and tapping the voltage across a pair of
the secondary terminals would give me 115V , just right for the fire
alarm.
I think its the cheapest solution. The dual 115V Farnell offers cost
above 14 Euros /17 dollars.


Hans
.

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