How to mae the k in potentiometer dependent (on a current)? SOLVED

 How to mae the k in potentiometer dependent (on a current)? by Hichi January 01, 2021 Coincidentally, I have been experimenting in CL with current control of a resistor. Results to date are here: https://www.circuitlab.com/circuit/m26zer743v7u/current-controlled-resistance/ When I saw your post on potentiometer control I put together a prototype simulation with two of the previous devices in series: https://www.circuitlab.com/circuit/5pcy9xh3r2r2/current-controlled-potentiometer/ Hoping that these schematics will give you some ideas! by EF82 January 02, 2021

 @EF82 definitely has you on the right track by using Behavioral Sources to implement the dynamic resistor(s). Instead of using a potentiometer element, just use two resistors to make up each half of the potentiometer. Try this example: The two resistances R1A and R1B add up to 100k. The key is that one is proportional to LIMIT(I(I1.nA), 0, 1) and the other is proportional to (1 - LIMIT(I(I1.nA), 0, 1)) . ACCEPTED +1 vote by mrobbins January 05, 2021 Neat, thanks! by EF82 January 05, 2021 I am trying to put two controlled resitances in parallel (Rvar and Rvar 5) in the circuit below. It seems not to be possible? by Hichi January 13, 2021 @Hichi it appears that the circuit you linked is not public. Can you make it public or unlisted so we can take a look? by mrobbins January 14, 2021 Thanks mrobbins. It is Unlisted now, can you please check? by Hichi January 14, 2021

 Thanks. It was very helpful. Would it be possible to link the Rvar value to different parts of another circuit? I have resitors that each are a multply of the Rvar and want them to change as the Rvar changes. I tried the Parameter Element but it seems not to accept Rvar ... +1 vote by Hichi January 02, 2021 I think this is the information that you are asking about: If you want to use more than one current controlled device (eg Rvar) on the same CL schematic, then each one must have a different name (eg Rvar, Rvar1, Rvar2, Rvar3, etc). If you want to synchronise a group of devices, then all of them in the group must share the same control voltage, eg V(ctrl). by EF82 January 04, 2021

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