**Problem**

Spice finds the correct DC operating point for the oscillator but there is no oscillation in Transient analysis.

**Discussion**

AC coupled sine wave oscillators can fail to start oscillating in the real world. They often fail to start in Spice.

**Fix**

Use a tiny coupling capacitor, perhaps 1pF, to couple a voltage source with a Pulse waveform into the oscillator. Set the Pulse initial level to 0V and the pulsed level to 1V. In 5Spice use the Step waveform.

This injects a disturbance into the circuit to start it oscillating.

**Crystal Oscillators - slow to stabilize**

The extremely high Q of a crystal oscillator means it takes thousands of sine wave cycles to reach steady state.

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