| Common base Colpitts circuit with a series resonant crystal in place of a base decoupling capacitor |
| L2 and C7 when resonate, presenting a very low impedance to ground |
| C6 and L2-C7 at resonant, will presented a high impedance to the signal path |
Simulation of voltage output with assumption of 10 MHz crystal characteristics
Ri = 7pF Li= 9.8uH Ci=7pF Co=6.3pF
Same circuit with L2 shorted
with L2 open circuit
with L2, C6 and C7 completely removed out of circuit
