Colpitts Crystal Oscillator circuit using 2N3904 NPN transistor with single 5V power
C20 is 100pF instead of 270pF in CN3165. The signal amplitude is larger.
The emitter follower buffer is changed to a common emitter amplifier.
Toggle (On then Off) the [Start] button to add a stimulus to start oscillation if it fails to start to oscillate.
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