It''s hot as hell in here
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I had some issues going from 6V to 5V on a 7805 regulator. I managed to
achieve about a stable 4.8.
On Tue, 6 Mar 2001 davemucha@j... wrote:
> I'm sure you'll get a lot of great high tech answers, but being more
> mechanically oreinteed, my 'fixes' are useally very low tech.
>
> using a 5 volt battery may let you lose signals as soon as the
> voltage drops below 5 volts. Since power is wasted as you already
> know by dropping 12 V to 5 V, you can start at 6 v.
>
> Get two 6 v batteries. Use one to power the electronics, and the
> pair in series to power your 12 v needs.
>
>
>
>
>
> In basicstamps@y..., chilton@t... wrote:
> > Oh great ones,
> >
> > I am struggling with heat issues in one of my projects. Several
> people
> > have offered solutions, but the problem really boils down to this:
> >
> > I have a 12v LCD screen being powered by a 12v battery. I would like
> > to use a smaller battery, but I'm a little unclear how all of this
> > power conversion stuff works. Right now, we have 5 other circuits
> > inside the housing, all deriving power from the 12v battery. But,
> > those are all 6v circuits, so I run the 12v through a voltage
> > regulator, which of course generates gobs of heat. This intuitively
> > doesn't seem like the right course of action, as it seems any time I
> > generate heat 'just for the hell of it', I'm losing power. I didn't
> > sleep through all of my physics classes :-)
> >
> > Can I use a smaller battery than 12v to power this? I know amps are
> > important, too, the power issues here just confuse the heck out of
> me.
> > I'm a software guy--this hardware stuff is too hard for my feeble
> mind
> > to understand. If I wanted to use a smaller voltage power source,
> how
> > can I obtain the higher voltage? And would doing that get rid of my
> > heat problem?
> >
> > Mocking me for my lack of understanding is OK, just taint it with a
> > little info and/or schematics for me to go on.
> >
> > Thanks,
> > -Chilton Webb
>
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>
Sean T. Lamont, CTO / Chief NetNerd, Abstract Software, Inc. (ServNet)
Seattle - Bellingham - Vancouver - Portland - Everett - Tacoma - Bremerton
email: lamont@a... WWW: http://www.serv.net
"...There's no moral, it's just a lot of stuff that happens". - H. Simpson
achieve about a stable 4.8.
On Tue, 6 Mar 2001 davemucha@j... wrote:
> I'm sure you'll get a lot of great high tech answers, but being more
> mechanically oreinteed, my 'fixes' are useally very low tech.
>
> using a 5 volt battery may let you lose signals as soon as the
> voltage drops below 5 volts. Since power is wasted as you already
> know by dropping 12 V to 5 V, you can start at 6 v.
>
> Get two 6 v batteries. Use one to power the electronics, and the
> pair in series to power your 12 v needs.
>
>
>
>
>
> In basicstamps@y..., chilton@t... wrote:
> > Oh great ones,
> >
> > I am struggling with heat issues in one of my projects. Several
> people
> > have offered solutions, but the problem really boils down to this:
> >
> > I have a 12v LCD screen being powered by a 12v battery. I would like
> > to use a smaller battery, but I'm a little unclear how all of this
> > power conversion stuff works. Right now, we have 5 other circuits
> > inside the housing, all deriving power from the 12v battery. But,
> > those are all 6v circuits, so I run the 12v through a voltage
> > regulator, which of course generates gobs of heat. This intuitively
> > doesn't seem like the right course of action, as it seems any time I
> > generate heat 'just for the hell of it', I'm losing power. I didn't
> > sleep through all of my physics classes :-)
> >
> > Can I use a smaller battery than 12v to power this? I know amps are
> > important, too, the power issues here just confuse the heck out of
> me.
> > I'm a software guy--this hardware stuff is too hard for my feeble
> mind
> > to understand. If I wanted to use a smaller voltage power source,
> how
> > can I obtain the higher voltage? And would doing that get rid of my
> > heat problem?
> >
> > Mocking me for my lack of understanding is OK, just taint it with a
> > little info and/or schematics for me to go on.
> >
> > Thanks,
> > -Chilton Webb
>
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>
Sean T. Lamont, CTO / Chief NetNerd, Abstract Software, Inc. (ServNet)
Seattle - Bellingham - Vancouver - Portland - Everett - Tacoma - Bremerton
email: lamont@a... WWW: http://www.serv.net
"...There's no moral, it's just a lot of stuff that happens". - H. Simpson