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27 The output of an inverting three-input summing op amp is volts when 1, 2, and 3 volts are applied to the inputs, and all resistors are 10K ohms. 28 The output of a non-inverting op amp is volts when 0.5 volts are applied to the input, the feedback resistor is 50K ohms, and the other resistors are 5K ohms. 29 Optoelectronic detectors turn (on, off) when struck by light that is emitted by the LED. 31. What is the frequency of an astable multivibrator when RA = 22K ohms, RB = 68K ohms, and C = .001F? Fout = 32 What is the duty cycle in problem 31? Duty = 33 figure? Which lamp will illuminate at the output of the magnitude comparator in the following I N MSB P \ A 1 A> B U Lamp 1 1 \ T LSB 1 IA>B IA=B A=B Lamp 2 IA\ I N 1 MSB P B 1 U 1 ALamp 3 T LSB 34 What is the frequency of an astable multivibrator when RA = 10K ohms, RB = 5K ohms, and C = 2 F? 35. What is the time duration of the monostable multivibrator in its unstable state if R = 10K ohms and C = 0.5 F? a. good C. inconclusive 330K b. bad d. none of the above R3=330K R4 M 52. What is Vout when V1 = 295mV, V2 = 186mV, R2=3.3K and V3 = 405mV. R1=3.3K + + + Vout V3 V2 V1 +

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