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Re: [PSUBS-MAILIST] More Batteries....power configuration?
Matt,
To understand how batteries in series work,
think of a two battery flashlight. The kind with the round barrel that you
insert two cylindrical shaped battery's into. Each
battery produces 1-1/2 volts. The light bulb is actually a
three volt lamp. When you insert the batteries, they have to go in so that
the negative of the first battery, the flat end, is touching the positive of the
second battery,the end with the protruding button, the top. This
arrangement raises the voltage by the number of battery's you connect times
their individual voltage. 2 battery's X 1-1/2 volts each
= 3 volts available to the lamp
Get a science book or look around on the web for
anything dealing with basic electricity and they will have examples of series
and parallel circuits.
The total amount of power you have available is not
a factor of how the batteries are connected but of the total charge your battery
pack is capable of holding. No difference if it's 12 volts or 36 volts
because the if the voltage in increased the available amperage is
reduced. Volts X Amps = Watts Watts is a measurement
of power draw. Watts hours, is a measurement of power drawn
in one hour. That's what determines your run time.
On this same note:
I was talking to a friend in the auto industry the
other day and he told me that the industry is considering going to a 36 volt
standard instead of 12 to reduce the bulk of a 12 volt system. Has anyone
heard anything about this?
Hope this helps, Dan H.
----- Original Message -----
Sent: Wednesday, April 30, 2003 11:58
PM
Subject: Re: [PSUBS-MAILIST] More
Batteries....power configuration?
Hey everyone,
So I get it: Higher voltage is
better. I'm tempted to use two or three different banks of batteries, one or
two running at high voltage for the main motor (s) and another at 12 volts to
power accessories (Microwave for pizza and blender for margaritas). Assuming
I've got a whole lot of 12-volt batteries, how do I connect them to make
higher voltage with which I'd feed the motors? How far down does the endurance
of a battery bank go when running at higher voltages than 12, or doesn't it
make a difference? I'm still a little fuzzy when it comes to electrons.
Also, I'd been wondering if there
was a standard set of formulas for figuring the pressures exerted on a sub at
a given depth, and consequently what thickness of a given material must be
used to make the hull. I'm trying to flesh out my sub on paper before I start
building.
Thanks and best regards,
Matt