On Mar 18, 2008, at 11:58 AM, Jon Chandler wrote:
> One part of your question (I think)  that nobody has addressed is the
> distribution of the low voltage.  Like everyone else, I've only seen  
> AC
> transformers.  The only use I've seen of the low voltage AC is for the
> doorbell.  Nothing else uses this transformer that I've seen.
>
> Another source of low voltage AC in many homes is a 28V transformer  
> for
> the furnace/air conditioning thermostat.  It too is dedicated to the
> task as far as I know,

In VERY old houses, I've seen them share a single transformer.

In my house, there's only the doorbell transformer, and my recent  
purchase of an "electronic" door-bell (I'd really rather have bought  
real bells, but try finding them at any hardware store these days, and  
I didn't want to wait for it to arrive from an online vendor and have  
my wife "veto" the thing because of how it looked once it arrived,  
versus how it looked in an online photo, or whatever...)  had me  
following badly written instructions to install a diode at the front- 
door (and if I had one, back-door) push-button.  (Yeah, not  
difficult... the instructions were amazingly bad for such a simple  
task.)

I like real bells.  I want to steal the real Bell System outdoor phone  
bells off my mom's house, but she isn't having any of that.  I always  
liked it when whole damn neighborhood knew when anyone got a phone  
call.  Hahahaha.  Now we can only tell in the summertime when windows  
are open, which neighbor is on the phone all the time.

--
Nate Duehr
nate@natetech.com



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