ox SIM 12.11 Consider the class B output stage, using MOSFETs, shown in Fig. P12.11. Let the devices have |V|= 0.5 V and μC WIL = 2 mA/V². With a 10-kHz sine-wave input of 5-V peak and a high value of load resistance, what peak output would you expect? What fraction of the sine-wave period does the crossover interval represent? For what value of load resistor is the peak output voltage reduced to half the input? Figure P12.11 +5 V Q1 Q2 -5V

"Below is a small signal equivalent circuit model considering the early effect of the BJT. Find the input resistance, output resistance, and voltage gain." Rout Rc R gm Ube R.R re ± Vi RE Vo

estion 2: Consider the BJT circuit given here. ( Write the input and output loop equations For the given values of Vcc= 10 V, Vin = 4V and resistor values, calculate all current values (IB, IC and IE) and VCE Assume that the ß for the transistor is 100 and the voltage drop across LED connected between Collector terminal and resistor (Rc) 2.1 V. TH i. ii. 111. VIN Vcc Rg=100 kΩ Re=2 kΩ LED 2.1 V B= 100 Based on the above analysis, correctly identify the current mode of operation Cutoff mode Active linear mode Saturation mode

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A transistor amplifier circuit is biased so that the quiescent point is to the far left of the load line midpoint. What do you expect to occur when the input voltage begins to vary? O The output voltage will be distorted on the bottom because it will hit the lower limit for VCE before the input voltage arrives at its peak. The output voltage will be distorted on the top because it will hit the upper limit for VCE before the input voltage arrives at its peak. O The output voTransistor's output voltage will look like the input voltage amplified and inverted. The output voltage will be zero (flat).

QUESTION 7: A BJT diff-amp circuit is biased with a BJT constant- current source Io= 2.32 mA. The BJT constant-current source has an output resistance of Rocs= 4.8 M2. The bipolar transistor parameters are ß = 50 and V4= o. Determine: (a) the differential-mode input resistance, Rid and (b) the common- mode input resistance, Ricm- T7 (kN) Format : 5.69 Rid (kN) Format : 5.45 Ricm (MQ) Format : 335.5

This is about BJT. I'm looking for the Ic, and Ib of this circuit.

Q.4/ Refer to the class AB power amplifier shown below: a. Determine the de parameters VB(Q1), VB(Q2), Icq, VCEQ(QI), VcCEQ(Q2). b. For the 5Vrms input, determine the power delivered to the load resistor. c. Determine the approximate input resistance seen by the signal source if Bac=100. +Vcc +9 V 1.0 k2 D1 out D2 Q2 V. 5.0 V ms RL 50 Ω R2 1.0 k2 -Vcc -9 V

1. For the circuit in Figure 1: a) Calculate the input and output power if the input signal results in a base current of 5 mA rms. b) Calculate the input power dissipated by the circuit if Rg is changed to 1.5 kN. c) What maximum output power can be delivered by the circuit if RB is changed to 1.5 kN? d) If the circuit is biased at its center voltage and center collector operating point, what is the input power for a maximum output power of 1.5 W? +Vcc (18 V) Rc = 16 2 RB 1.2 k2 V. B - 40 100 µF Figure 1

Q.4/ Refer to the class AB power amplifier shown below: a. Determine the de parameters VBQ1), VB(Q2), IcQ, VCEQ(QI), VCEQ(Q2). b. For the 5Vrms input, determine the power delivered to the load resistor. c. Determine the approximate input resistance seen by the signal source if Bac=100. +Vcc +9 V R 1.0 kn D Vout O D2 R 50 2 R2 1.0 k 5.0 V ms --Vcc -9 V