🔍 Key Concepts

• Quartz-crystal oscillator behavior when driven too hard • Relationship between coupling/drive level and crystal heating or mechanical stress • Difference between changes in Q (quality factor) and physical damage/operating limits

💭 Think About

• What happens to a quartz crystal if the power or drive level becomes excessive for its mechanical structure? • Does increasing coupling between plate and grid usually make oscillations gentler and more stable, or stronger and more intense? • Which of the options describes a likely physical consequence of too much energy in the crystal rather than an electrical parameter change or a modulation effect?

✅ Before You Answer

• Make sure you understand what Q (quality factor) means and whether higher drive automatically increases Q • Ask whether grid-to-plate capacitance is something that would be "destroyed" by strong coupling, or if it is mostly a fixed physical property • Check which answer deals specifically with excess energy in the crystal itself, not with generic RF modulation or circuit parasitics