Exam 3 Flashcards
Input voltage Ei is applied to circuit (this will lead to current flow that charges the capacitor)
Switch closed (down)
Closed circuit with R and C elements alone (current flow will drain capacitor)
Switch open (up)
Charge stored in capacitor
Q
Current flow through resistor
I
Sun of voltage changes add to 0 around loop
Kirchhoff’s voltage law
Time difference (phi/w)
B
Removes entirety of noise signal
Ideal filter
Removes portion of noise signal
Actual filter
Graph from high pass bands to 0 stop band
Loss pass filter
Graph from 0 stop band to high pass band
High pass filter
Graph from stop band to pass band then back to stop band
Bandpass filter
Graph from passband to stopband back to passband
Notch filter
Actual filters try to achieve
Max flatness
Linear phase response
Sharp transition at cutoff frequency
Filter that only contains R C L components
Passive
Contains R C L components and amplifiers
Active
A way to convey output signal magnitude
Attenuation
Widest flat passband region
Butterworth filter
Widest linear phase response region
Bessel filter
Low pass circuit passes low frequency signal content to the _____
Woofer
High pass circuit passes high frequency content to the _____
Tweeter
Summing point (node) must be
(Solve using ___ )
0 (V = IR)
Rules when dealing with operational amplifiers
No current flows into either input terminal (very high input impedance)
The differential input voltage is always 0
Add R to filter out high frequency noise
Differentiator
Output sign unchanged
G = (R1+R2)/ R2
Noninverting amplifier
