- #1

- 22

- 0

## Homework Statement

Hi so I have a problem that I don't exactly know how to approach, here's the diagram:

http://images.fr1ckfr4ck.fastmail.fm/probA.jpg [Broken]

The diodes are supposed to have saturation current I_s = 10^(-15) A

## Homework Equations

What is V?

## The Attempt at a Solution

First I tried assuming that 2mA must be going through D_1, which means 8mA must be going through D_2, so I used the exponential model to solve for the voltage drop across each diode. But then what? Is that even what I should be trying to figure out here?

What that got me was that the voltage drop across diode 1 would be ~708 mV and ~742 mV across diode 2. But even if that's right I don't know what it means for the voltage at V.

If I assumed that both diodes should have a voltage drop of 0.7 volts (which I don't think is right) they would have a current of 1.45mA through them - which doesn't seem to work. So that seemed like a dead end also.

Any pointers would help, thanks.

Last edited by a moderator: