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Re: Simulation problem concerning the use of the same variable twice in a formula

 

Elien,

Your resistor's expression?
{(((7216103745845419*R)/281474976710656 - 48730063831763729805207428564385/1267650600228229401496703205376)/((R + 7981113806679325/4503599627370496)^2 + 4937677430752859/281474976710656) + 2691614897875927/1125899906842624}
has unbalanced parentheses.

I think that is the cause of LTspice's inability to process the parameter R.? Fixing the parentheses results in a different error message ("Singular deck expression"), but apparently it is not fatal and the simulation proceeds.? I think it results in math overflow when calculating that resistor's value, so LTspice might make it infinite (effectively removing it from the circuit).

Andy
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