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Which risk increases when parasitic capacitance is present in high-frequency amplifiers?

A)Thermal runaway instability occurs.
B)Oscillation instability is probable.
C)Increased power supply ripple.
D)Collector current saturation results.

💡 Explanation

Parasitic capacitance introduces unintended feedback paths, therefore the gain at certain frequencies may become very high promoting self-oscillation via positive feedback, rather than thermal runaway, because bias parameters shift.

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