# Diode any help?

Discussion in 'Homework Help' started by ENG99, Sep 1, 2015.

1. ### ENG99 Thread Starter Member

Feb 13, 2014
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i had work with this assignment several times but I'm not sure if my answer is correct or no. Can u plz check it.
I have attached it

Thanks

2. ### DerStrom8 Well-Known Member

Feb 20, 2011
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Where is the question?

3. ### ENG99 Thread Starter Member

Feb 13, 2014
37
0
The question says:
Find D1 and D2

4. ### DerStrom8 Well-Known Member

Feb 20, 2011
2,428
1,329
I found them. I circled them in red:

Seriously though, "Find D1 and D2" is not a question. What aspects of D1 and D2? D1 and D2 are just diodes. Do you want the current flowing through them? Power dissipated? There are many measurements that can be taken of D1 and D2. Asking to "find D1 and D2" is not a complete question.

Dr.killjoy and Jony130 like this.
5. ### Jony130 AAC Fanatic!

Feb 17, 2009
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And how can Vx = 0V if you assumed that both diodes are ON and notice that D2 cathode is at 2V.

6. ### ENG99 Thread Starter Member

Feb 13, 2014
37
0
Yes I meant the current flowing through d1 and d2

7. ### MikeML AAC Fanatic!

Oct 2, 2009
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What are you assuming that the forward conduction voltage drop (Vf) of your diodes is?

8. ### WBahn Moderator

Mar 31, 2012
18,079
4,917
What do you mean when you say, "Vx=0 for short circuit"?

You indicate that Vx is the voltage at the node at the bottom of the 1 kΩ diode. Why would the voltage there ever be 0 V?

What model are you using for your diodes?

Saying, "I1 = 1" is fundamentally incorrect. '1' is a number, it is not a current. You have a current of '1 mA', so you need to say that "I1 = 1 mA"

Track your units -- the payoff is huge.

9. ### Dr.killjoy Well-Known Member

Apr 28, 2013
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157
You just made my day lol

Thanks
Jay Sr