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Photodiode in mulsitim?

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USMCinfinity

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Is there a photodiode in multisim?

I need to simulate this circuit

**broken link removed**
 

A regulator Si junction diode with a current source representing the photo current (proportional to light intensity) should work for you. If the exact AC behaviour matters, you can adjust the diode capacitance according to the modelled photodiode (by scaling the diode area). The photo current polarity is such, that it biases the diode in forward direction.
 

I think you can start with 1N4148 for small photodiodes, or 1N4001 for larger ones.
 

How would I set up the photocurrent? Simply a current source with whatever value I want to the anode?
 

The current source shoul be connected in parallel to the diode. The current has to be selected according to the simulated photodiode, typically in a µA range.
 
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