Question Pool -- Category E7G
What are the principal uses of an op-amp RC active filter in amateur
circuitry?
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A.
- High-pass filters used to block RFI at the input to receivers
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B.
- Low-pass filters used between transmitters and transmission lines
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C.
- Filters used for smoothing power-supply output
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D.
- Audio filters used for receivers
Answer is D.
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