Now that's what I'm talkin' bout....

John


-----Original Message-----
From: pic microcontroller discussion list
[mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Gordon Varney (personal)
Sent: Monday, July 16, 2001 10:06 AM
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: [OT]: The 12 Volt Home


No, actually 42V is correct........ The terminology is stupid.

when we speak of 12 volts we really mean 13.8Vdc,
When we speak of 24 volts we really mean 27.6Vdc,
When we speak of 36 volts we really mean 41.4Vdc,
When we speak of 48 volts we really mean 55.2Vdc,
These voltages apply during charging and anything to within 20% less is
acceptable.

Please note the 36 volt section is really 41.4V or 42 volts rounded off.
Yes, folks the new electrical systems will be
a 36 volt battery.  However, the auto manufactures did not want to go with
anything standard, so they invented there own
batteries, connectors, and converters, and lets call it 42 volts not to be
confused with the old 36 volts already out
there.

Solar homes use 48V and 24V systems all the time. They convert to 12V for
the appliance or actual application.  Bus the
house at lets say 24 Vdc and use small switching regulators at 90-95%
efficiency at each light or fan. There is a slew
of camping gear and solar equipment made for just this application.


Search under solar homes and you will find that there are many homes running
off solar or wind with no dependencies on
the mains.

We manufacture a full line of converters for just this application.


Gordon Varney




> Ummm, don't you mean 48 volts??
>
> I see lots of DC homes on the 48v dc standard,
> and you can get 48v fridges, lights, etc.
> -Roman
>
>
> Chris Carr wrote:
> >
> > As the Lifestyle supplements in your Sunday Newspapers would Say
> >
> > 42 volts is the new 12 volts **
> >
> > Also I am surprised that no-one has pointed out that the reason a
computer
> > generates heat is not because of an inefficient SMPS but because the
> > majority of electricity it consumes gets converted to heat by the CPU,
> > Graphics Processor etc. If you wish to reduce heat generation first get
rid
> > of the CRT monitor and replace it with a LCD (it also has the benefit of
> > releasing bench space for more clutter, sorry..... I mean work in
progress
> > 8-)   )
> >
> > ** If the reference to 42 volts is too cryptic, auto manufacturers are
now
> > moving onto 42 volts to reduce vehicle weight and electrical losses
>
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