Electrical and Computer Engineering Homework Solutions

A depletion-load NMOS amplifier and its small-signal equivalent circuit are shown in the figures. For the small signal parameters gm1=0.2 and mA/V, gm2=0.04mA/V, ro1=ro2=50k and CL= 20pF, calculate the mid-band voltage gain Vo/Vi.

A depletion-load NMOS amplifier and its small-signal equivalent circuit are shown in the figures. For the small signal parameters gm1=0.2 and mA/V, gm2=0.04mA/V, ro1=ro2=50k and CL= 20pF, calculate the mid-band voltage gain Vo/Vi. ==================================== a) vo/vi = -2.5 v/v b) vo/vi = -1.5 v/v c) vo/vi = -2.0 v/ ...continues

In the pnp transistor circuit shown, VEB = 0.7V and B=50. For the operating voltage VEC=4V, calculate the base resistance RB. Now, change RB such that the transistor starts saturating (VEC = 0.2V with B=50).

In the pnp transistor circuit shown in jpg file, VEB = 0.7V and B=50. For the operating voltage VEC=4V, calculate the base resistance RB. Now, change RB such that the transistor starts saturating (VEC = 0.2V with B=50). ================================================= Base Resistance RB RB = 28.25k or 43.25k or 36.25k or 57. ...continues

In the diode circuit shown, the diodes are ideal except that each is modeled by a voltage source of 0.5V in series with a (diode) resistance of rd=20, when forward biased. A sinusoidal signal Vs with imput impedance Rs=100 is connected to the diode circuit. Find the amplitude of the output signal vo. Also, with Vs=0 determine Vo.

In the diode circuit shown, the diodes are ideal except that each is modeled by a voltage source of 0.5V in series with a (diode) resistance of rd=20, when forward biased. A sinusoidal signal Vs with imput impedance Rs=100 is connected to the diode circuit. Find the amplitude of the output signal vo. Also, with Vs=0 determine V ...continues

A half-wave rectifier employing a 12-V-rms 60-Hz sine-wave source and no dc load is filtered using a polarized electrolytic capacitor having a small leakage current. For diodes assumed to have a 0.7V drop independent of current, calculate the resulting output. What is the PIV required of the diode?

A half-wave rectifier employing a 12-V-rms 60-Hz sine-wave source and no dc load is filtered using a polarized electrolytic capacitor having a small leakage current. For diodes assumed to have a 0.7V drop independent of current, calculate the resulting output. What is the PIV required of the diode? Show how you arrived at the a ...continues

A power amplifier when driven by a current source of 5mA rms and a source resistance of 8k, delivers 12.5 W signal power to an 8 load resistance. Find rms value of the output voltage.

A power amplifier when driven by a current source of 5mA rms and a source resistance of 8k, delivers 12.5 W signal power to an 8 load resistance. Find rms value of the output voltage. Show how you arrived at the answer. a) Vo rms = 15V or 10V or 20V or 5V

OP-Amp Probs

For the circuit shown, assume an ideal op-amp. Find vo(t). Also, find the maximum value of vo(t). See attached diagram. Show how you arrived at your answer.

(12.1) A power amplifier when driven by a current source of 5mA rms and a source resistance of 8k, delivers 12.5W signal power to an 8k load resistance. Find peak to peak value of the output voltage. If the input voltage to the amplifier shows 5V rms, determine the voltage gain of the amplifier. Show how you arrived at your answer.

A power amplifier when driven by a current source of 5mA rms and a source resistance of 8k, delivers 12.5W signal power to an 8k load resistance. Find peak to peak value of the output voltage. If the input voltage to the amplifier shows 5V rms, determine the voltage gain of the amplifier. Show how you arrived at your answer. ...continues

{13.4} In the diode shown, the diodes are ideal except that each is modeled by a voltage source of 0.5V in series with a (diode) resistance of rd=20, when forward biased. A sinusoidal signal Vs with input impedance Rs=100 is connected to the diode circuit. Determine the maximum value of Vs such that Vo remains sinusoidal, with no distortion. Also, find the amplitude of the output signal Vo.

In the diode shown, the diodes are ideal except that each is modeled by a voltage source of 0.5V in series with a (diode) resistance of rd=20, when forward biased. A sinusoidal signal Vs with input impedance Rs=100 is connected to the diode circuit. Determine the maximum value of Vs such that Vo remains sinusoidal, with no disto ...continues

{1.12} A power amplifier when driven by a current source of 5mA rms and a source resistance of 8k, delivers 12.5W signal power to an 8 load resistance. Find peak to peak value of output voltage.

A power amplifier when driven by a current source of 5mA rms and a source resistance of 8k, delivers 12.5W signal power to an 8 load resistance. Find peak to peak value of output voltage. If the input voltage to the amplifier shows 5 V rms, determine the voltage gain of the amplifier. The given multiple choice answer is verifi ...continues

(12.13} Find v and i for the circuit shown. Assume an ideal op amp. Please show how you arrived at your answer, and why the final answer is a positive or negative number.

Find v and i for the circuit shown. Assume an ideal op amp. Please show how you arrived at your answer, and why the final answer is a positive or negative number. ================================================= v= a) -5V b) -4V c) +4V d) +5V ============================================= i= a) -0.25ma b) -0.2ma c) + ...continues

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