2 common types of power supply units (PSU) are__________ and switched-mode.
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A common emitter amplifier, the input and output singles are in 180° phase displacement.
A. 对
B. 错
The 555 IC chip is a widely used amplifier circuit.
A. 对
B. 错
An operating point (Q) must set in the middle of the Load line (in a transistor amolifier).
A. 对
B. 错
An operational amplifier produces an output potential (relative to circuit ground) that is typically 100,000 times larger than the potential difference between its input terminals.
A. 对
B. 错