Electric Motor Control
10th Edition
ISBN: 9781305177611
Author: Herman
Publisher: Cengage
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Chapter 51, Problem 4SQ
To determine
Explain why electric braking is smooth and resilient.
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BW=1MHZ
For Johnson-Nyquist Noise Generator (or Thermal Noise Generator), the device utilizes the
thermal noise that naturally arises from the random motion of electrons in resistors at a non-zero
temperature. The voltage is arising from thermal noise in two resistors of 80 and 120 Qat
Temperature T=290 °k:
1-Write the equations of v(t), 12(t), up on the circuit diagram of series and parallel connecti
2- Apply the equation v(t) to find Vrms for series connection scheme.
3- Find inrms for Series scheme
4- Find the Vrms for series scheme. By using i̟rms
√³(+)O
v²(t)
80 120
ww
R₁ R₂
Gi
G
if(t)
1/80 1/120
For Johnson-Nyquist Noise Generator (or Thermal Noise Generator), the device utilizes the
thermal noise that naturally arises from the random motion of electrons in resistors at a non-zero
temperature. The voltage is arising from thermal noise in two resistors of 80 and 120 Qat
Temperature T=290 °k:
1-Write the equations of v(t), 12(t), up on the circuit diagram of series and parallel connecti
2- Apply the equation v(t) to find Vrms for series connection scheme.
3- Find inrms for parallel scheme
4- Find the Vrms for series scheme. By using inrms
80 Q 120
ww
R₁ R₂
v²(t)
Gi
i²(t)
1/80 1/120
Vcc=-12 V；R1=33 kΩ；RC=1.8 kΩ；βDC = 150；RE=560Ω；R2=5.6 k Ω確定圖5-38中的I1、I2和IB。
課本給的答案A: I1=315μA；I2=288μA ；IB=27μA，請教我計算過程
Chapter 51 Solutions
Electric Motor Control
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