Re: Norton Resistance Question

On Nov 18, 1:06 pm, Tim Wescott <t...@xxxxxxxxxxxxxxxxxxxx> wrote:
On Tue, 18 Nov 2008 06:50:37 -0800, radlee wrote:

(top posting fixed)





On Nov 18, 9:35 am, "Greg Neill" <gneil...@xxxxxxxxxxxxxxxx> wrote:
rad...@xxxxxxxxxxxxxxxxxx wrote:
Hi guys,

I've gotten a lot of repsonses, but no real answers.

People here are reluctant to give away solutions to what appears to be
homework.  Hints yes, suggestions yes, but answers without some effort
on the requester's part, no.

To clariy, the
text says to remove RL and short the source.  To you guys that think
this is my homework.... good thing it is not.  This is actually on a
computer aided instruction course at my tech school.

So...it's course work but not homework... Perhaps you could explain the
distinction.

You didn't mention the further details about RL in your original
question, yet you expect to obtain meaningfull answers?

It states the
answer as 21 ohms.  I came up with 20.55 ohms.  It generally wants
two decimal places, so I would be shocked if it rounded 20.55 to 21.
So, I was picking other folks brains.

20.555... actually.

And you never mentioned this as the being the motivation for your post..
 Why not?  Are you always less than forthcoming about your motives?

You will find people here can be very helpful and are willing to help
you understand things, but you have to show some initiative on your
part.  Show what you've tried, where you're stuck or confused.

Here is the original post:

Can someone tell me (step by step) how to calculate the Norton's
resistance for this circuit? (see picture below)

http://www.progressivetel.com/~radney4/NT.jpg

Thanks!
Lee
Wow.. never mind guys.... I didn't expect this much pent up hostility.
Honestly.... i will move on.  I simply wanted to validate if the screen
was rounding,  I have the computer's answer, but I was simply trying to
validate it.  As I stated in my 2nd post, (and per the instruction on
the computer) I remove RL and short the load. After that I calculate
resistance using Ohm's Law.  I got 20.55.  The computer says it is 21
(multiple guess).  I was wondering if my Ohm's law is flawed, or if the
computer is rounding.  I spent 3 hours trying to get an answer on my
own.  SO IT IS NOT A LACK OF EFFORT.  But C'est la vie.... other things
need my attention.  I will move on.  I do appreciate the responses.

Lee

There's a reason for the hostility, although I don't think you rate it.

There's a word to describe people who skate through technical courses by
getting others to do their homework.

That word is "incompetent".

Since technical people usually depend on the work of others, incompetent
colleagues make everyone look bad.  Capable incompetents do this while
looking good themselves, and get promoted to management, where they
_really_ make life hell for the competent folks.

So we do all we can to encourage such folks to quit tech school and go be
incompetent in some entirely different field.

If you have a question about homework, say "this is homework for such and
such a class", then ask for details that will help you come to the answer
yourself.  That way we won't think we're being asked to supply answers
that you can just copy in (and believe me, plenty of folks ask for just
that, particularly around end-of-term time).

--

Tim Wescott
Wescott Design Serviceshttp://www.wescottdesign.com

Do you need to implement control loops in software?
"Applied Control Theory for Embedded Systems" gives you just what it says..
See details athttp://www.wescottdesign.com/actfes/actfes.html

Wow... I must say that technical arrogance is not just limited to my
little corner of the world. Here are the factst. I GRADUATED
technical school in 1983. I am taking some core classes at the local
tech school (to get my associates). A friend of mine is an adjunct
instructor there and we sat down to go through some of these courses
(It's been 25 years for God's sake) to see what we could remember. We
were rocking along pretty well until we got here. It piqued my
curiosity and I wanted to make sure I wasn't totally brain dead.

I didn't know that a simple question would breed more accusations than
an episode of the Jerry Springer Show. MY BAD!!! For crying out
loud, put down the scope probe, turn off the function generator, find
a girl and do what comes naturally. I know the economy is bad and
people are a bit uptight.. but JEEEZZZ!!!

.

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