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For an RC phase-shift oscillator using BJT, R = 10 kΩ, C = 0.01 μ.F and Rc = 2.2 kΩ The minimum current gain needed for sustained oscillations is around
  • a)
    156
  • b)
    101
  • c)
    96
  • d)
    188
Correct answer is option 'A'. Can you explain this answer?
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For an RC phase-shift oscillator using BJT, R = 10 kΩ, C = 0.01 ...
For sustained oscillations, the minimum vaiue of current gain or forward current gain is
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For an RC phase-shift oscillator using BJT, R = 10 kΩ, C = 0.01 ...
In a RC phase-shift oscillator using BJT, R refers to the value of the resistor in the feedback network. A typical value for R in a RC phase-shift oscillator is 10 k ohms (kΩ).

The RC phase-shift oscillator is a type of oscillator circuit that uses a combination of resistors and capacitors to create a phase shift in the feedback signal, which helps to sustain oscillations. The BJT (Bipolar Junction Transistor) is used as the active component in this circuit.

The values of the resistors and capacitors in the feedback network determine the frequency of oscillation of the RC phase-shift oscillator. By selecting appropriate values for R and the capacitors, the desired frequency of oscillation can be achieved. Typically, three capacitors and three resistors are used in the feedback network to create the necessary phase shift.

It is important to note that the value of R alone does not determine the frequency of oscillation, but it is one of the components that contribute to the overall frequency response of the oscillator. The other components, such as the capacitors and the transistor characteristics, also play a role in determining the frequency of oscillation.
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For an RC phase-shift oscillator using BJT, R = 10 kΩ, C = 0.01 μ.F and Rc = 2.2 kΩ The minimum current gain needed for sustained oscillations is arounda)156b)101c)96d)188Correct answer is option 'A'. Can you explain this answer?
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