# How to solve this diode circuit?

Discussion in 'Homework Help' started by LinkyPwns, Dec 5, 2009.

Dec 5, 2009
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Can someone help me out with this circuit please?

2. ### PackratKing Well-Known Member

Jul 13, 2008
843
219
dig 'round your salvage components, hook it up and measure it !!

EOP !

3. ### hgmjr Retired Moderator

Jan 28, 2005
9,030
218
This looks like a homework question. If it is, it should be posted in the Homework forum.

What have you been able to do toward answering the problem yourself?

hgmjr

4. ### mumbles New Member

Dec 20, 2004
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I am very confused by the definition of the resistors being defined as 80W, maybe this should be ohm's, especially as if they were both disappating 80W then the zener would have to current flowing from gound.

5. ### hgmjr Retired Moderator

Jan 28, 2005
9,030
218
If you know the power associated with a resistor and you know the voltage dropped across that resistor, you can use the power formula to compute the resistance.

hgmjr

6. ### mumbles New Member

Dec 20, 2004
9
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I am fully aware that with the knowledge of the power you can calculate the resistance, but with power being set the same, the current through R1 is less then Rl, however if you assume that there was a mistake and W should be Ω. then one of the given answers matchess

Jan 28, 2005
9,030
218
Mumbles,