behavioural inductor 01

A behavioural inductor where the inductance is programmable by the voltage on the 'inductance' net.
A 100mH inductor is shown for reference.

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A behavioural inductor where the inductance is programmable by the voltage on the 'inductance' net. A 100mH inductor is shown for reference.

Changing the expression to V(A)/(I(R2.nA) would allow the capacitance to be programmed by the current in R2.

The expression can be scaled. For example:

V(a)/(100m*V(capacitance))

would produce a 100mH inductor with a V(inductance) of 1V rather than 100mV.

BEWARE! A negative value of control parameter will produce a negative capacitance. Adding an ABS() function will prevent this:

V(a)/ABS(V(inductance))

For more see: SPICE Analog Behavioral Modeling of Variable Passives by Christophe Basso http://powerelectronics.com/mag/power_spice_analog_behavioral_3/

behavioural inductor 01 PUBLIC