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Plot Log curve as inverse to Antilog (Exp) curve?

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I've uploaded 2 files to the Temp folder:

curve_exp.jpg

curve_log.jpg

To get the exp curve in?curve_exp.jpg?I used: Value: V=5*exp(7*(time-1)) in a Behavourial Voltage source. It gives an exponential climb to 5V over 1 Second.

What equation should I use to get the inverse of that curve shown in?curve_log.jpg ?

Thanks.

?
 

Hello,

I don't understand your log-plot.

May be you simple asked for the step response of RC-circuits.

.param tau = 0.2

V = 5*(1-exp(-time/tau))

Best regards,
Helmut

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