Find Q Factor of Resonant Amplifier Circuit

[aspsrilanka]

How find Q factor of this resonant amp cct.because "R" is not theare,
cant apply " Q=( ωL/r) or =(Dynamic R/ωL) "

 

[waht]

The resonant tank is driven by a transistor current source which has some output impedance R

 

[aspsrilanka]

The resonant tank is driven by a transistor current source which has some output impedance R

Please tell me what is the R. how find that value?

 

[waht]

Since there is no collector resistor, the only output resistance comes from the transistor's collector to emitter junction. It depends on the transistor you use, but generally is about 50 K.