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MAE171A Linear Circuits Lab
Linear Circuit Experiment @ UCSD
16
Mechanical Engineering
Undergraduate 4
03/18/2012

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Cards

Term
Ideal Op-Amp
Definition
Infinite Gain

Zero Output Impedance

Infinite Input Impedance

No current into the + and - terminals

Zero Offset Voltage (V+ + V- = 0)
Term
Clipping
Definition
Output voltage cannot exceed the rail voltage (supply voltage)
Term
Voltage across a capacitor
Definition
V = Q/C
Term
Non-Inverting Gain
Definition
Vout = (1+(Rf/Ri))*Vin
Term
inverting Gain
Definition
-(Rf/Ri)*Vin
Term
Differential Amplifier Gain
Definition
((R1 + R2)/(R3+R4))*(R4/R1)*V2 -(R2/R1)*V1
Term
Instrumentation Op-Amp
Definition
Differential Amplifier with variable gain
Term
Voltage Follower
Definition
Op Amp used as a buffer, feeding Vout back to the V- terminal giving Vout = Vin
Term
Summing Amplifier
Definition
Non-inverting and Inverting. Uses multiple resistors to create a summing effect at the V+ terminal (Vout may or may not have one)
Term
Capacitor Impedance
Definition
R(s) = V(s)/i(s) = 1/Cs

equivalent resistor value
R(jw) = 1/jCw
Term
Angular Frequency (Cutoff)
Definition
wc = 2*pi*fc
Term
1st Order Low-Pass Filter Cut-off Frequency
Definition
fc = 1/(2*pi*R*C)
Term
Audio amplifier
Definition
Op-Amp transition between Voltage Follower to Amplifier as a function of frequency

Non-inverting Op-Amp with Ri replaced with Ri and C
Term
High Frequency Gain
Definition
Determined by taking the limit as s -> inf.
Term
Low Frequency Gain
Definition
From Fourier Analysis of circuit behavior, letting s=jw and w = 0
Term
2nd Order Butterworth Filter
Definition
Low pass, well damped filter
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