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Op-Amp Based Band Pass Filter
Equivalent DC (DC feedback)
Equivalent ω=ω o
Circuit Analysis (Solve for Vout/Vin)
Second Order Bandpass Filter
Bandwidth of Second Order Bandpass Filter
Tunable Bandpass Filter
BPF at 100 Hz mS mS Vout is delayed by 2.76 mS, approximately ¼ of a period.
Closer Look at 950 Hz (Vout is larger than Vin!)
BPF at 10 KHz
Question What is tunable? – Not a capacitor! (Not an absolute requirement, since you can always do switches to add/remove capacitors) – Resistor, but which resistor? Consequnce? R3+R4 R1 R2
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