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← ScienceWhich consequence results when parasitic capacitance interacts within high-frequency power amplifier?
A)Spurious oscillations and instability✓
B)Increased power efficiency margin
C)Reduced electromagnetic interference signature
D)Improved amplifier thermal stability
💡 Explanation
Spurious oscillations occur because parasitic capacitance forms unintended resonant circuits, enabling positive feedback via undesired paths; therefore instability, rather than stability, results, because energy moves where designers did not anticipate; parasitic inductance is less direct.
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