Voltage Controlled Resistor (VCR) in PSPICE student - diyAudio
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Old 27th January 2010, 09:20 PM   #1
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Join Date: Sep 2005
Default Voltage Controlled Resistor (VCR) in PSPICE student


Does anyone know how to create a true voltage controlled resistor in Pspice (using E, F, G, and H controlled sources)?

I found a great site on how to create a VCR using text-based Spice:

Voltage-Controlled Resistor

I am wondering if there is a way to do this in the graphical PSpice student version.

The problem I am having is defining the gain of a controlled source. In text-based Spice, you can make the gain of a controlled source variable (for instance, you can make the gain of a controlled voltage source equal to the current through one branch multiplied by the voltage across a resistor in another branch). I don't *think* you can do this in graphical Spice because the GAIN field of a controlled source requires a constant number - the program gives an error if I try to put some kind of equation in for gain.
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Old 28th January 2010, 03:28 AM   #2
jcx is offline jcx  United States
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why wouldn't you use LtSpice? BI, BV source equations work - no "student" limitations, free, active support
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Old 29th January 2010, 01:25 PM   #3
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Join Date: Sep 2005
You're right jcx,

I should get into LTspice (I have it, but I haven't used it extensively yet). It appears that there is no "B" voltage or current source in Pspice student.
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