# HelP det.Vx

Discussion in 'Homework Help' started by josel, Jul 26, 2009.

1. ### josel Thread Starter New Member

Jul 26, 2009
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0

Resistor value is 1k

Determine the Voltage in D1, D2, and Vx.

thanks a lot!

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2. ### beenthere Retired Moderator

Apr 20, 2004
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What is the total voltage with the forward conduction drop of a diode figured in? And then what is the current through the resistor?

3. ### josel Thread Starter New Member

Jul 26, 2009
3
0
Just please look at the image.. that's only the given sir..

thnx a lot

4. ### JoeJester AAC Fanatic!

Apr 26, 2005
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1,211
Which diode, D1 or D2, do you, the OP think is conducting?

What is the Vf (forward conduction drop) of the diodes assuming they both were Si or Ge?

What is the voltage across R1 and the current through R1?

Where is the common point for the Vx measurement?

Those are the questions you should consider when solving this problem.

5. ### josel Thread Starter New Member

Jul 26, 2009
3
0
i really dont know ..

6. ### Audioguru New Member

Dec 20, 2007
9,411
896
Then you need to learn some basic electronics.
Maybe your teacher can explain it to you.

Apr 26, 2005
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8. ### Dave Retired Moderator

Nov 17, 2003
6,960
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Understanding how the diode works will make this question very easy. See http://www.allaboutcircuits.com/vol_3/chpt_3/1.html (the basics you need are in that article).

If you think people are giving you a hard time that is because we are here to help you understand electronics not to spoon-feed answers to you. What you put in yourself you will certainly get out of it.

Dave