Discussion Problem #8
Two identical amplifiers (A1 = A2) are cascaded together and negative feedback is
implemented around the combination as shown below.
Discussion Problem #11
The circuit shown below produces either square waves or triangle waves, depending on which
output, Vo1 or Vo2 is selected. The frequency can be varied over a considerable range by the
setting of the potentiometer sh
1. A sinusoidal oscillator circuit is shown below. The op amp is ideal.
a. The oscillation frequency is to be 50 kHz. What is the required value of the inductance
b. What is the
Department of Electrical Engineering
University of Minnesota
Time/Place: 9:05-9:55 MWF /Fraser 101
Name: W.P. Robbins
Office: KHKH 5-123
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Discussion Problem #2
Consider the MOSFET-Based differential amplifier shown below.
KP = pCox = 5x10-5A/V2
Vt = 1 V
VA = 50 V
1. The dc power drawn from the bias supp
Discussion Problem #1
Consider the shown below composed of a Wheatstone bridge driving a difference amplifier.
The op amp is ideal. Assume that the difference amplifier does not load the Wheatstone
Discussion Problem #12
The circuit shown below is a monostable multivibrator. The op amp is ideal except that its
output limits at plus and minus 10 V.
1. What is the stable state of the circuit (v
' !: 10V: t.a
(blR: y: 10V : l
(c' v _ R: 10mXlok: lv
l.1 a)1 =
R l() ll
,ryor.'volts, miliaps, and kilo-ohms constitute a
consistent set of uits.
P : /'?R :
Thus, l? should hae a
4,5,6 sho that the gain is approx
The missing entry for experiment
#3 can be predicted as foows:
The minimum number of pins re4uired by dualop-amp is 8. ach op-amp ha 2 iput erninals
(4 pins) and one output terminal (2 pins). An
EE 450 Engineering Economics
For week four do the following problems:
18, 19, 22, 23,24,29, 38, 40, 43, 53
(These problems are found on pgs. 122-126)
Remember that while you are encouraged to work the problems together, you must tu