expo/VCO equation questions

[Martin Czech]

use:

kb=1.38e-23
q=1.6e-19
iref=1e-6
C=1e-9
delta_u=5.0
delta_t=1e-7
t=273+27

#function for Ut, temperature is x!
u(x)=kb*x/q

#expo function
i(x,t)=iref*exp(x/u(t))

#time proportional to C and delta u (low/high level) , inverse to i plus some delay
t(x,t)=C/i(x,t)*delta_u+delta_t

#frequency
f(x,t)=1.0/t(x,t)


m.c.