LDR not found on Multisim 11.0.1

[exodia_necross]

Where i can find LDR (light dependent resistor) on multisim 11.0.1 ??

[Tien_P · Accepted solution]

Multisim doesn't have a LDR but you can use a Votage Controlled Resistor instead, the input for this component is voltage but you can let it be light.  Multisim doesn't really simulate light.  If you need a LDR to draw you schematic, go through Component Wizard, you can draw anything.

[exodia_necross]

Thank you for replying. How to use Component Wizard to create LDR ?? Please hep !!!

[Tien_P]

Have a look at this tutorial:

http://zone.ni.com/devzone/cda/tut/p/id/3173

In the first step, you should select "Layout" only because you will not be simulating this component.

[exodia_necross]

Ok. Thank you very much. I'll do it. 🙂

[mikrovolt]

Because a light dependent resistor is a resistor that varies, a variable resistor works perfectly.

For this led the circuit is open until 53% of 20k which is 10.6k Ohm the transistor closes lighting the LED to a safe level.