Questions from Electronics

Q: An FET phase-shift oscillator having gm = 6000 mS,

An FET phase-shift oscillator having gm = 6000 mS, rd = 36 kΩ, and feedback resistor R = 12 kΩ is to operate at 2.5 kHz. Select C for specified oscillator operation.

Q: Calculate the operating frequency of a BJT phase-shift oscillator as

Calculate the operating frequency of a BJT phase-shift oscillator as in Fig. 14.21b for R = 6 kΩ, C = 1500 pF, and RC = 18 kΩ.

Q: Calculate the frequency of a Wien bridge oscillator circuit (as in

Calculate the frequency of a Wien bridge oscillator circuit (as in Fig. 14.23) when R = 10 kΩ and C = 2400 pF.

Q: For an FET Colpitts oscillator as in Fig. 14.26

For an FET Colpitts oscillator as in Fig. 14.26 and the following circuit values determine the circuit oscillation frequency:

Q: What is the ripple factor of a sinusoidal signal having peak ripple

What is the ripple factor of a sinusoidal signal having peak ripple of 2 V on an average of 50 V?

Q: Calculate the size of the filter capacitor needed to obtain a filtered

Calculate the size of the filter capacitor needed to obtain a filtered voltage having % ripple at a load of  mA. The full-wave rectified voltage is  V dc, and the supply is  Hz.

Q: Given VB = 4 V for the network of Fig. 4

Given VB = 4 V for the network of Fig. 4.133, determine: a. VE. b. IC. c. VC. d. VCE. e. IB. f. 

Q: A -mF capacitor provides a load current of  mA at

A -mF capacitor provides a load current of  mA at 8% ripple. Calculate the peak rectified voltage obtained from the -Hz supply and the dc voltage across the filter capacitor.

Q: Calculate the size of the filter capacitor needed to obtain a filtered

Calculate the size of the filter capacitor needed to obtain a filtered voltage with % ripple at a load of  mA. The full-wave rectified voltage is V dc and the supply is  Hz.

Q: Calculate the percentage ripple for the voltage developed across a -mF

Calculate the percentage ripple for the voltage developed across a -mF filter capacitor when providing a load current of  mA. The full-wave rectifier operating from the -Hz supply develops a pe...