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Calculate the resonant frequency of a Collpit's oscillator

Inductor( Henries):
C1(Farads):
C2(Farads):
r(Ohms):
rpi(Ohms):
Re(Ohms):

Results

Resonant frequency :

Note1: rpi=Vt/Ib where Vt=kt/q typically 0.026V at room temp. K is boltzman's constant. q is electronic charge and T is absolute temperature ( Centigrade + 273) Degrees Kelvin. Note2: Re is the emitter biasing resistance if the implementation is discrete. Note3: Ib is the base current in the NPN