Questions from Electronics

Q: For the transistor Colpitts oscillator of Fig. 14.27 and

For the transistor Colpitts oscillator of Fig. 14.27 and the following circuit values, calculate the oscillation frequency:

Q: Calculate the oscillator frequency for an FET Hartley oscillator as in Fig

Calculate the oscillator frequency for an FET Hartley oscillator as in Fig. 14.29 for the following circuit values:

Q: Calculate the oscillation frequency for the transistor Hartley circuit of Fig.

Calculate the oscillation frequency for the transistor Hartley circuit of Fig. 14.30 and the following circuit values:

Q: Draw circuit diagrams of (a) a series-operated crystal

Draw circuit diagrams of (a) a series-operated crystal oscillator and (b) a shunt-excited crystal oscillator.

Q: Design a unijunction oscillator circuit for operation at (a) 1

Design a unijunction oscillator circuit for operation at (a) 1 kHz and (b) 150 kHz.

Q: Determine the range of possible values for VC for the network of

Determine the range of possible values for VC for the network of Fig. 4.132 using the 1-MΩ potentiometer.

Q: If the gain of an amplifier changes from a value of —

If the gain of an amplifier changes from a value of —1000 by 10%, calculate the gain change if the amplifier is used in a feedback circuit having b = —1/20.

Q: Calculate the gain, input, and output impedances of a voltage

Calculate the gain, input, and output impedances of a voltage-series feedback amplifier having A = - 300, Ri = 1.5 kΩ, Ro = 50 kΩ, and b = —1/15.

Q: Calculate the gain with and without feedback for an FET amplifier as

Calculate the gain with and without feedback for an FET amplifier as in Fig. 14.7 for circuit values R1 = 800 kΩ, R2 = 200 Ω, Ro = 40 kΩ, RD = 8 kΩ, and gm = 5000 mS.

Q: For a circuit as in Fig. 14.11 and the

For a circuit as in Fig. 14.11 and the following circuit values, calculate the circuit gain and the input and output impedances with and without feedback: RB = 600 kΩ, RE = 1.2 kΩ, RC = 4.7 kΩ, and b...