[Public-list] inverter

Wed Oct 11 12:47:42 PDT 2006

Thanks bobby. This is very helpful. I was not aware of the difference on the
modified sine wave vs. pure sine wave issue. Given price difference, and my
requirements, I think that modified sine wave should work for me.

One question...my laptop has a dc power supply in its power cord. It
requires 18V or something. Would it be possible for me to use a step-up
transformer or soemthing to power the laptop? Seems to me the laptop should
be pretty okay to deal with a messy AC signal since it is just gonna convert
it to DC anyway.

J

On 10/11/06, Bobby <capricebob at yahoo.com> wrote:
>
> See below which I poached from Jack Rabbit Marine:  You may wish to
> contact them and speak with a sales rep.  They are very helpful.  I ended up
> with a pure sine wave XS 400 wt in my boat.  I had intended on using my
> laptop and the manufacturer of the laptop said that I couldn't use a
> modified sinewave.   If you intend on using sensitive stuff, check with the
> manufacturer to see if the equipment can take modified sinewave.
>
>
>   From Jack Rabbit Marine:
>   Inverters convert DC power from the batteries into AC power that can be
> used to power 120V or 240V appliances. In order to choose the right inverter
> for your application, you should consider these factors:
>
> • Pure Sine Wave or Modified Sine Wave: A pure sine wave inverter will
> produce AC output that is indistinguishable from domestic grid power. These
> inverters can be used to power any kind of equipment. A modified sine wave
> inverter will produce AC output with a more jagged, square sinewave shape.
> This is OK for use with appliances such as microwaves, hair driers and
> blenders but should not be used for sensitive equipment such as stereos, DVD
> players or satellite communications sets. The price premium for pure sine
> wave inverters is slowly decreasing, but modified sine wave inverters still
> represent the best value for money.
>
> • Power Output and Surge Capability: The inverter should be sized so that
> its rated power output can handle all the simultaneous loads that will be
> put on it. Some devices cause a temporary power surge on startup, and the
> unit must be rated to handle that surge without overloading.
>
> • Battery Capacity: Make sure your battery bank has enough capacity to
> support the DC load that the inverter will place on it.
>
> • Hardwired or Outlet: Hardwired inverters can be permanently wired in to
> your onboard AC system. Inverters with AC outlets are connected with an AC
> cord with a three-pin plug.
>
> • Battery Charger: Inverters with built-in battery chargers provide an
> efficient means of obtaining two functions in the same unit.
>
> • Automatic Transfer Switch: These switches are found on combined
> inverter/chargers. When the shorepower is connected, the unit functions as a
> battery charger. When the shorepower is disconnected, the inverter function
> takes over and the boat's AC circuits are automatically switched to inverter
> power.
>
>       Toll Free : 1-800-473-3981 l Phone : 1-203-961-8133
>
> J Bergquist <jbergqui at gmail.com> wrote:
>
>
>   I am trying to decide between a Xantrex 1000W and 1800W.
>
> I have not figured it out yet. They retail at West Marine for $250 and
> $350
> respectively.
>
> J
>
> On 10/11/06, Peter Staehling wrote:
> >
> > What size inverter? I have used a small cigarette
> > lighter plug in one for various stuff with mixed
> > success. I never used any larger ones.
> >
> > --- J Bergquist wrote:
> >
> > > I am thinking of installing an inverter. Has anybody
> > > got any particular
> > > items for discussion on this topic?
> > >
> > > Also, I bought some sweet Schaeffer towable jib
> > > leads on sale at APS and
> > > want to rig them up. Any advice on how much purchase
> > > is needed to move the
> > > leads around smoothly with the jib loaded up? Is 3:1
> > > enough? I saw some
> > > boats at the show have 4 or 5:1.
> > >
> > > What size jib sheets do most people use? Mine are
> > > monster 1/2" line that I
> > > bought at Bacons before I knew anything about buying
> > > line. I want to replace
> > > them and was thinking 3/8". I have heard some
> > > people say they like 7/16" is
> > > that for strength or for cleat holding? How do most
> > > folks attach jibsheets
> > > to the clew? Currently I use a lark's head which is
> > > nice because there is no
> > > metal at the sheet/clew interface, no chance of
> > > catching on something, and
> > > it's never slipped on me yet. But I was thinking of
> > > maybe splicing these
> > > lines to the clew (then have a set for each sail...a
> > > bit expensive...) or
> > > using a shackle. I have seen some people just use
> > > bowlines. I'd be
> > > interested in knowing if anybody has a particularly
> > > good method for doing
> > > this.
> > >
> > > Finally, what do people use for light weather
> > > spinnaker sheets? Diameter?
> > > Means of attachment? I figure you could use a VERY
> > > small ronstan shackle
> > > spliced to the sheet and that would probably be no
> > > heavier than a bowline.
> > > Has anybody tried the plastic shackles? They are
> > > really light.
> > >
> > > Thoughts?
> > >
> > > J Bergquist
> > > _______________________________________________
> > > These businesses support your Association:
> > > http://www.alberg30.org/store/A30supporters.html
> > > Please support them.
> > > _______________________________________________
> > > Public-list mailing list
> > > Public-list at alberg30.org
> > > http://alberg30.org/mailman/listinfo/public-list
> > >
> >
> >
> > __________________________________________________
> > Do You Yahoo!?
> > Tired of spam? Yahoo! Mail has the best spam protection around
> > http://mail.yahoo.com
> > _______________________________________________
> > These businesses support your Association:
> > http://www.alberg30.org/store/A30supporters.html
> > Please support them.
> > _______________________________________________
> > Public-list mailing list
> > Public-list at alberg30.org
> > http://alberg30.org/mailman/listinfo/public-list
> >
> _______________________________________________
> These businesses support your Association:
> http://www.alberg30.org/store/A30supporters.html
> Please support them.
> _______________________________________________
> Public-list mailing list
> Public-list at alberg30.org
> http://alberg30.org/mailman/listinfo/public-list
>
>
>
> ---------------------------------
> All-new Yahoo! Mail - Fire up a more powerful email and get things done
> faster.
> _______________________________________________
> These businesses support your Association:
> http://www.alberg30.org/store/A30supporters.html
> Please support them.
> _______________________________________________
> Public-list mailing list
> Public-list at alberg30.org
> http://alberg30.org/mailman/listinfo/public-list
>

 1160596062.0