Subject:
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Re: RCX Voltage Question
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 2 Jan 2003 19:04:10 GMT
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Viewed:
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933 times
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"Steve Baker" <lego-robotics@crynwr.com> wrote in message
news:3E1374CB.70000@airmail.net...
> In series:
>
> +------------------+
> | |
> | Motor
> | |
> Battery |
> | |
> | Motor
> | |
> +------------------+
>
> When you connect two motors (or lamps or anything else) in SERIES,
> the voltage is halved but the current stays the same.
Just a minor quibble... The current for two identical resistive loads in
series will be half that of just one of the loads when connected to the
same voltage source. This follows by applying Ohm's law (I=V/R)
by substituting R with 2R (V is constant at 9V). The other interesting
thing is that each load when connected in series only gets 1/4 the
power of just the single load (using P=V*I or P=V*V/R). Also,
motors (and lamps) don't have a linear voltage/current relationship
(i.e. resistance changes with voltage and motor load) so this
complicates the situation further.
Mark
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Message is in Reply To:
 | | Re: RCX Voltage Question
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| (...) When you connect two devices across a source of electricity, you can do so either in series or in parallel. In parallel: +---...---+---...---+ | | | | | | Battery Motor Motor | | | | | | +---...---+---...---+ In series: +---...---+ | | | Motor (...) (22 years ago, 1-Jan-03, to lugnet.robotics)
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