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Maxish
Joined: 14 Feb 2007
Posts: 5
Helped: 1
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 14 Feb 2007 19:24 voltage controlled resistor |
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This questions is for the SPICE gurus here.
I need to model a voltage controlled resistor in SPICE. Its function is similar to that of the VSWITCH SPICE device. For those that are unfamiliar with this device, it attempts to model an almost ideal switch by continuously changing its resistance value based on the controlling voltage.
For my purpose, let's assume my resistance needs to be R=K*V(node1, node2). I am attempting to do something with the VCVS and VCCS Analog Behavioral devices in SPICE, but I am not getting anywhere.
Ideas anyone?
Thanks
Added after 1 hours 6 minutes:
Okay I found something. It was actually pretty trivial.
Sorry folks
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madengr
Joined: 06 Apr 2005
Posts: 394
Helped: 84
Location: Kansas City
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14 Feb 2007 22:39 voltage controlled resistor spice |
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14 Feb 2007 22:39 Ads |
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Mr.Cool
Joined: 20 Jun 2001
Posts: 641
Helped: 24
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15 Feb 2007 2:03 spice voltage controlled resistor |
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there are models which are just math equations that could be used. also in the ABM library.
i have found this handy for converting between units and then when you display the simulation result, typically in units of voltages, you can just convert one-to-one with the unit that you are measuring, like RPMs for motors or degrees rise for thermal.
Mr.Cool
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