resistor with random variable number not working

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fima v
fima v 2020-5-29
评论： Ameer Hamza 2020-6-2
Hello i have many simulink blocksets,
i have tried to put rf blockset in order to build a ressistor with random value in it as shonn bellow.
but its not working .Where did i go wrong?

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Ameer Hamza
Ameer Hamza 2020-5-29
There is no need to add randn(1) in the resistor value. As the documentation page mentions: https://www.mathworks.com/help/simrf/ref/variableresistor.html you just need to tick the "Simulate noise" checkbox. In the resistance field, just type 50. Also, make sure that the "simulate noise" box is ticked in RF-blockset configuration block.
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fima v
fima v 2020-6-2
another thing is that this voltage source is connected into an opamp where i have defined in the opamp some input noise.
Will the noise from the voltage source and input noise of the opamp will be in a conflict by MATLAB behavior? how they will play together?
Thanks.
Ameer Hamza
Ameer Hamza 2020-6-2
It is difficult to predict. You will need to run the model to check if it works.

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