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Basic DC electricity question
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Doug Miller
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Basic DC electricity question
In article , Mark Lloyd wrote:
On Thu, 15 Feb 2007 01:35:28 GMT,
(Doug Miller)
wrote:
In article , Mark Lloyd
wrote:
On Wed, 14 Feb 2007 18:29:08 GMT,
(Doug Miller)
wrote:
In article , "HK"
wrote:
Thanks everyone. Good information here.
This is a Grade 6 project and I was a little distressed to find that even
the basic concepts of electricity haven't been taught yet they are supposed
to build a basic circuit and working model.
For instance, my daughter assumed that to power two 6v lights, she needed a
12v power supply. Yikes.
So what's the problem? Connect them in series.
Or in parallel if the power supply is big enough. C cells may not be.
If you connect two 6V lamps in parallel to a 12V supply, you're quite likely
to see the two lamps doing an excellent imitation of fuses -- especially "if
the power supply is big enough".
I have done that before. They usually do not burn out immediately, but
glow brighter (and whiter) for awhile.
Of course that is not what I was talking about before. Maybe you
missed that what I said was an ALTERNATIVE to using 12V.
?
I was responding to your suggestion, visible above, that "if the power supply
was big enough" he could connect two 6V lamps in parallel to a 12V supply.
That won't work for very long.
--
Regards,
Doug Miller (alphageek at milmac dot com)
It's time to throw all their damned tea in the harbor again.
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