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Clapp crystal oscillator simulation problem

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rujayord

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Hello,
I'm using OrCAD Capture trying to simulate a clapp crystal oscillator:

1723525499_05032010_1.jpg


but when i try to run any kind of simulation the output file says:

**** INCLUDING SCHEMATIC1.net ****
* source KURSOVA1
.EXTERNAL OUTPUT out
C_Co N22687 N24215 3p
C_Cbl N00254 N22687 100n
L_Lkr N32067 0 84.43uH
L_Ls N33550 N22687 3H
Q_Q1 VCC N00254 N00199 BC546A
C_Cs N335420 N24215 8.44f
C_C1 N00199 N24215 10.57n
R_rin N33550 N335420 200
R_RE 0 N00199 7.39k
R_R2 N00254 VCC 95.88k
R_R1 0 N00254 143.22k
C_c5 0 OUT 6.07n
R_R N00199 N22687 220
V_V0 VCC 0 +6Vdc
R_Ri 0 OUT 600
C_c4 OUT N00199 2.105n
C_C3 N32067 N24215 374.34p
I_I1 N22687 N33550 DC 0Adc AC 0Aac
+PULSE 0 1m 0 10n 10n 50n 1

**** RESUMING 1.cir ****
.END

ERROR -- Node N24215 is floating

I tried adding resistances but it only gets worse.. if you have any suggestions i'd appreciate your help

The data for my calculations was Fg=1Mhz Ui=0,2V Ri=600ohm
 

Add a 1G ohm resistor from the junction of C1 Cs Co C3 to ground.

Keith
 

    rujayord

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