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Consider the differential amplifier in Figure 11.20 . The transistor parameters are given in Example 11.8, except that
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Chapter 11 Solutions
MICROELECT. CIRCUIT ANALYSIS&DESIGN (LL)
- The common-mode gain is ........... 1. very high 2. very low 3. always unity 4. unpredictablearrow_forwardWhich of the following is NOT true Select one: a. Feedback removes the effect of transistor variability from the circuit b. Transistors come in two varieties, BJTS and MOSFETS c. BJTS can be described using current gain or transconductancearrow_forwardQ.5/ Refer to the class AB amplifier in figure below operating with a single power supply: a. Find the de parameters VB(Q1), VB(Q2), VE, IcQ, VCEQ(QI), VCEQ(Q2). b. Assuming the input voltage is 10oVpp, calculate the power delivered to the load resistor. c. What faults causing the following troubles: 1. A positive half-wave output signal 2. OV on both bases and emitters 3. No output: emitter voltage =15V 4. Crossover distortion on the output. Vcc +15 V R 1.0 kN C3 C2 D2 Q2 RL V 75 N 1.0 kNarrow_forward
- 11. i) Design a series Op-Amp regulated O/P of 12V which its I/P voltage is 20V. Chose the designed components and draw the circuit diagram ii) Design a shunt transistor regulated O/P of 6V which its I/P voltage is 15V. Chose the designed components and calculate I, with drawing the circuit diagramarrow_forwardQUESTION 10: The circuit parameters for diff-amp shown in Figure 11.30 are V* = 6 V, V = -6 V, and Io = 0.45 mA. The transistor parameters are ß = 74, V₁1 = V42 = 115 V₂ V 43 V 44 = 90 V, and V45 = ∞0. Determine the open-circuit differential-mode voltage gain. What is the output resistance of the diff-amp? Find the value of load resistance R₁ that reduces the differential-mode gain to 71 percent of the open-circuit value. Ad (open circuit) Format: 7842.2636277565 R₂ (kn) Format: 429.43075670268 Format: 672.96782467086 R₁ (kn) ibl iz i₁ 8mºd 2 V+ 25 V- i₂ = 8m'd 2 24 2₂ Signal ground V- Figure 11.30 Cc 8md 2 -Ove RL Sning Toolarrow_forwardPlz I need the answer of this question in advancedarrow_forward
- Consider the JFET amplifier in the Figure below with transistor parameters loss = 6 mA, VGS (OFF) = -3 V and VA = 100 V. Let VDD = 10 V. a) Determine RD and VGs such that ID = 4 mA and VDs = 6 V. b) Determine gm and ro. c) Determine the small-signal voltage gain Av = vo/Vi. VDD Vj + VGS + H + VGS ww + UDS VOarrow_forwardsolve 4 Use a BJT op-amp)1 You’ve been asked to build an alarm system using monstable multvibrator having an activetime pf 100msec.. Explain the principle of operation and the type feedback of the op-amp.What is the advantage of this circuit?2 You’ve been asked to build a low frequency square wave generator using a basic comparatorhaving a frequency of 10kHz and 50% duty cycle. Explain the principle of operation and thetype of feedback of the op-amp. What is the advantage of this circuit?3 Build a Wein-Bridge oscillator using, C=1µF and +10V power supply to produce 10 kHzsinusoidal waveform. Generate your plots and compare output results. Highlight anydiscrepancies and discuss what happens if we want to increase the frequency to 100 kHz.4 Build a high frequency Colpitts oscillator producing 10kHz Discuss its advantage over RCoscillators. How can you modify the circuit to include a crystal in you circuit. What is atypical application of such an oscillator?arrow_forwardQUESTION 2 A non-inverting amplifier has a 15-k Rf and a 1.2-kR,. How much is its closed-loop volt 9. 12.5. -12.5. 13.5.arrow_forward
- Using the characteristic curve (please refer to the uploaded characteristic curve) of the NPN transistor of the class A Series - Fed Amplifier, shown in Figure 1 belowarrow_forwardSuppose the op amp shown has an fT of 2 MHz. What is the phase margin of the amplifier?arrow_forwardAdiff-amp is biased with a constant-current source lo- 0.25mA that has an output resistance of R. - 8MO. The bipolar transistor parameters are B=100, VT = 0.025 V and VA -. Determine the common-mode input resistance. O a. Ricm = 538 MA O b.Ricm- 308 MO OC Ricm = 808 MO Od Ricm = 704 MQarrow_forward
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