Electronic Devices - Oscillator Circuits
Exercise : Oscillator Circuits - General Questions
- Oscillator Circuits - General Questions
- Oscillator Circuits - Filling the Blanks
- Oscillator Circuits - True or False
36.
One condition for positive feedback is that the phase shift around the feedback loop must be ________°.
37.
At what phase shift is the magnitude of 
A at its minimum in the Nyquist plot?
A at its minimum in the Nyquist plot?38.
Determine the output impedance with feedback for a voltage-series feedback having A = –100, R1 = 15 k
, Ro = 20 k, and a feedback of = –0.25.
, Ro = 20 k, and a feedback of = –0.25.0.2 k
392.16
1.82 k
769.23
39.
Determine the voltage gain with feedback for a voltage-series feedback having A = –100, R1 = 15 k, Ro = 20 k, and a feedback of = –0.25.
, Ro = 20 k, and a feedback of = –0.25.40.
Calculate the resonant frequency of this Wien bridge oscillator if R1 = 25 k, R2 = 40 k, C1 = 0.001 
F, and C2 = 0.002 F.
, R2 = 40 k, C1 = 0.001 F, and C2 = 0.002 F. 
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