Score: 1. The circuit is shown in the figure (a), the input waveform unand up is figure (b), the forward voltage of diode up=0.7V. (1)Please judge the working state of diode. (10 points) (2)Draw uo waveform of the output voltage. (It is necessary to write the detailed solving problems process) (10 points) uo U20 D D (a) (+5V) -Ouo u/V 3 0.3 0 U12/V 0.3 0 (b) t Score: 2.The circuit is shown in the figure, the parameters of the transistor are as follows = 100, =1002 bb 24 (1)Draw the micro-variation equivalent circuit. (5 points) (2)Solving static Q point (5 points) (3) A Rand R.: (10 points) Y be Rb2 25k C + HF R$1 5kQ Re 5kQ2 Re 300 Re 1kQ -O+Vcc (+12V) C + R 5kQ2 Ce Uo Score: 3.Judge the feedback polarity and configuration of multistage amplifier in the circuit. (20 points) R R V V *** C 11.ORS Rs R (a) +Ucc C + + Us C R R 18k42 LOK(2 V (b) R6 27k42 R V RA IkQ R 3kQ2 +Ucc RL 10k + Uo Score: O 21 4. This circuit is shown in the figure, the maximum amplitude of the output voltage of the integrated operational amplifier is 14V, u is 2V, which is the direct voltage signal. (20 points) Please find out the output voltage under the following conditions (1) R2 short circuit; (2) R3 short circuit; (3) R4 short circuit; (4) R4 open circuit. R 50 kQ R M R 100 km2 A 100 R 2kQ2 Uo Score: 5. In the circuit, u=4V, up=1V, answer the following questions (20 points) (1) when the switch is closed, solve the voltage value of A B C D and uo. (2) assume switch is open when time t is equal to zero(t = 0), how long will output voltage uo become zero? O 2411 O 2412 A 100 04: R 50 kQ2 B C R R/2 A 1 F A4 -O "o Score: 1. The circuit is shown in the figure (a), the input waveform unand up is figure (b), the forward voltage of diode up=0.7V. (1)Please judge the working state of diode. (10 points) (2)Draw uo waveform of the output voltage. (It is necessary to write the detailed solving problems process) (10 points) uo U20 D D (a) (+5V) -Ouo u/V 3 0.3 0 U12/V 0.3 0 (b) t Score: 2.The circuit is shown in the figure, the parameters of the transistor are as follows = 100, =1002 bb 24 (1)Draw the micro-variation equivalent circuit. (5 points) (2)Solving static Q point (5 points) (3) A Rand R.: (10 points) Y be Rb2 25k C + HF R$1 5kQ Re 5kQ2 Re 300 Re 1kQ -O+Vcc (+12V) C + R 5kQ2 Ce Uo Score: 3.Judge the feedback polarity and configuration of multistage amplifier in the circuit. (20 points) R R V V *** C 11.ORS Rs R (a) +Ucc C + + Us C R R 18k42 LOK(2 V (b) R6 27k42 R V RA IkQ R 3kQ2 +Ucc RL 10k + Uo Score: O 21 4. This circuit is shown in the figure, the maximum amplitude of the output voltage of the integrated operational amplifier is 14V, u is 2V, which is the direct voltage signal. (20 points) Please find out the output voltage under the following conditions (1) R2 short circuit; (2) R3 short circuit; (3) R4 short circuit; (4) R4 open circuit. R 50 kQ R M R 100 km2 A 100 R 2kQ2 Uo Score: 5. In the circuit, u=4V, up=1V, answer the following questions (20 points) (1) when the switch is closed, solve the voltage value of A B C D and uo. (2) assume switch is open when time t is equal to zero(t = 0), how long will output voltage uo become zero? O 2411 O 2412 A 100 04: R 50 kQ2 B C R R/2 A 1 F A4 -O "o Score: 1. The circuit is shown in the figure (a), the input waveform unand up is figure (b), the forward voltage of diode up=0.7V. (1)Please judge the working state of diode. (10 points) (2)Draw uo waveform of the output voltage. (It is necessary to write the detailed solving problems process) (10 points) uo U20 D D (a) (+5V) -Ouo u/V 3 0.3 0 U12/V 0.3 0 (b) t Score: 2.The circuit is shown in the figure, the parameters of the transistor are as follows = 100, =1002 bb 24 (1)Draw the micro-variation equivalent circuit. (5 points) (2)Solving static Q point (5 points) (3) A Rand R.: (10 points) Y be Rb2 25k C + HF R$1 5kQ Re 5kQ2 Re 300 Re 1kQ -O+Vcc (+12V) C + R 5kQ2 Ce Uo Score: 3.Judge the feedback polarity and configuration of multistage amplifier in the circuit. (20 points) R R V V *** C 11.ORS Rs R (a) +Ucc C + + Us C R R 18k42 LOK(2 V (b) R6 27k42 R V RA IkQ R 3kQ2 +Ucc RL 10k + Uo Score: O 21 4. This circuit is shown in the figure, the maximum amplitude of the output voltage of the integrated operational amplifier is 14V, u is 2V, which is the direct voltage signal. (20 points) Please find out the output voltage under the following conditions (1) R2 short circuit; (2) R3 short circuit; (3) R4 short circuit; (4) R4 open circuit. R 50 kQ R M R 100 km2 A 100 R 2kQ2 Uo Score: 5. In the circuit, u=4V, up=1V, answer the following questions (20 points) (1) when the switch is closed, solve the voltage value of A B C D and uo. (2) assume switch is open when time t is equal to zero(t = 0), how long will output voltage uo become zero? O 2411 O 2412 A 100 04: R 50 kQ2 B C R R/2 A 1 F A4 -O "o