Determine Vout 1

[ritchie888]

I have, what I'm sure is a very simple circuit, and I need to determine Vout from the design attached. I'm sure I have to do superposition and use a potential divider, but I can't seem to get the answer given. Anyone that can push me in the right direction?

Cheers

 

[MiketheEngineer]

Looks like howework from here... Not allowed on these forums

 

[ritchie888]

Nope, example question in course notes, with the answer given, just not sure how they got there.

Answer is 14.23V.

 

[MiketheEngineer]

Would have fooled me - an old strucutral! Only took one EE coursde - BECUASE I HAD TOO!!

 

[IRstuff]

It's a voltage divider output, resulting in 14.2308. Perhaps, you can show your work and someone can show you where your error is.

TTFN
faq731-376

 

[benta]

R1: ignore
R2, R3, R4: combine to one resistor
R5, R6: combine to one resistor

That's it, now you have your voltage divider.

Benta.

 

[geekEE]

Maybe I'm being picky, but you can't get four significant digits on the answer when the resistors all have one significant digit.

Glenn

 

[IRstuff]

Sure, you can,

10/3 =3.3333...

At least 4 significant digits. Doesn't mean that there's any accuracy attached.

TTFN
faq731-376

 

[VEBill]

"...significant digits..."

Well done.

 

[mikekilroy]

hint: where is Vout referenced to?

Actually real answer is lots MORE significant digits if one were really really picky, like 14.23076923077......

 

[RyreInc]

This is definitely homework!

The exact answer is 185/13

 

[OperaHouse]

Got ot laugh......My wife got a calculator at a garage sale for 50 cents. A week later she says it gives funny numbers. Every calculation comes out as a fraction. Trying the clear functions listed on the back did nothing. Just when you think that you are smarter than a fifth grader. Just what is that function and why is it needed? I'll try removing the battery next May when we return to the camp.

 

[IRstuff]

There should be a key sequence that sets the calculator back to decimal mode. which brand is it?

And yeah, homework is not allowed, as a general rule.



TTFN
faq731-376