Engineering Board Exam Reviewer · Passive Filters · medium
An RC high-pass filter with C=470 nF and R=680, is driven by a 10 V rms sine wave at 124 Hz. Find the rms output voltage.
- 7.07 V
- 7.58 V
- 4.83 V
- 2.42 V
Answer
D. 2.42 V
Solution
fc=1/2π RC=498 Hz. VoutVin= f/fcsqrt(1+(f/fc)2) with f/fc=0.249, so Vout=2.42 V.
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