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3. The non-inverting amplifier below has a gain that depends on frequency. Determine the magnitude of the voltage gain at (a) signal frequencies when the capacitor may be treated as a short, (b) DC, when the capacitor may be treated as an open, and (c) at any frequency, with a formula for the gain as a function of R1, R2 and C1. Choose part values to make the amp have a gain of 20dB at signal frequencies that drops to 17dB at 20 Hz out R3 C1

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