Series crystal oscillator

In a series crystal oscillator, the crystal is usually connected in the feedback circuit . The picture shows the actual circuit
  of a series crystal oscillator .     The reference values ​​of component parameters are as follows:     1) The transistor is 3DG6C.     2) Resistor: R1 -91ktl, island -llkfl, RC -lkfl.     3) Capacitance: cb =O. 011F.     4) The values ​​of L, CJ and G are determined by the oscillation frequency of the oscillator.     It can be seen that the oscillation frequency of the series crystal oscillator   can only meet the starting and oscillation conditions when it is equal to the series resonance frequency of the quartz crystal .