Re: TI-H: hey i have a question.
[Prev][Next][Index][Thread]
Re: TI-H: hey i have a question.
k thanks for the idea of the of a ups for my computer, i was looking
on how to make some xmas lights on my car, but ya i could think of
hooking up a P166 on it too i guess.... thanks interesting idea.
- nathan wainwright(StoryTelr@yahoo.com)
---Grant Stockly <gussie@alaska.net> wrote:
>
>
> Just don't touch the active pin of the transistor when you've got 3
car
> batteries and a 700watt microwave transformer hooked together. :)
Thats
> the only "bad" part about it. Other than that, you can make a great
UPS
> for under $100. You have to have a fast acting high power relay,
and your
> car batteries should be able to do atleast 1,000 amps surge. Thats
enough
> for about a mid sized computer system. A standard computer system
will use
> 10 amps at 12 volts and when the power dies, the startup amperage is
about
> 60 amps. One car battery would provide about 15 minutes of backup
power
> about 4 times. if you want a good UPS, get golf cart batteries.
They are
> made for deep discharge.
>
> My computer will run with 100-130volts. That means my UPS dies when
the
> batteries are at about 10 volts, where they are 14 fully charged.
>
> 1 AMP of AC power = 5amps at 12 volts
>
> When ever you are dealing with cheep junk like microwave
transformers, add
> 2-3 amps.
>
> 1AMP of AC powr = 7-8 AMPS of DC power at 12 volts. (transformer load)
>
> Don't skimp on your transformers. it is easy to blow a transformer.
make
> sure it can withstand high internal temperatures and I recomend a 5
inch
> cyclone or squirl cage fan to cool the thing off.
>
> Buy a real transformer if you plan to run anything over about 3 amps.
> Microwave's transformers weren't made for constant load.
>
> And test the thing on a 1$ grage sale TV or a light bulb. I made a
dual
> transformer version that blew the living out of a 60watt light
bulb....
> Problem? I forgot to connect one of the wires on the second
transformer to
> the correct place. :) The bulb wasn't expecting 180 volts or what
ever it
> was getting.
>
> I had plans for this once... I guess I can dig them out. I made my
first
> 100watter' when I was in 6th grade. If you realy get into electrical
> 120volt devices in your car, go to a small engine repair shop and
find one
> of the tiny alternators used in those 500 watt 2 cycle generators. it
> shouldn't be too hard to belt it to your engine shaft. :)
>
> Grant
>
> >I'm not touching this one with a ten foot pole.
> >
> >-Gabe
> >-----Original Message-----
> >From: StoryTelr Jedi Knight <storytelr@yahoo.com>
> >To: ti-hardware@lists.ticalc.org <ti-hardware@lists.ticalc.org>
> >Date: Sunday, September 20, 1998 2:03 PM
> >Subject: TI-H: hey i have a question.
> >
> >
> >>
> >>k now if someone wanted to oh... hook Christmas lites up on his car,
> >>and use them while driving and/or a display of school and christmas
> >>spirit. what sortof a power source, or converter would one need????
> >>
> >>i mean like a portable generator or a converter on the cigerette
> >>lighter, the type of christmas lites would be either indoor, or
> >>outdoor lights, and i live in canada, if that helps with any wattage
> >>conversions.
> >>
> >>
> >>- nathan wainwright(StoryTelr@yahoo.com)
> >>
> >>
> >>
> >>
> >>==
> >>A rose is a beautiful thing,
> >>A sunset is a gorgeous sight,
> >>but the one thing that is best of all,
> >>is someone to see it with.
> >>
> >>- StoryTelr August 6th, 1998 2:31 am
> >>
> >>_________________________________________________________
> >>DO YOU YAHOO!?
> >>Get your free @yahoo.com address at http://mail.yahoo.com
> >>
> >>
>
>
>
>
==
A rose is a beautiful thing,
A sunset is a gorgeous sight,
but the one thing that is best of all,
is someone to see it with.
- StoryTelr August 6th, 1998 2:31 am
_________________________________________________________
DO YOU YAHOO!?
Get your free @yahoo.com address at http://mail.yahoo.com
Follow-Ups: