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For the op−amp circuit shown in Figure 14.28, the parameters are
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Microelectronics: Circuit Analysis and Design
- EXAMPLE 14-4 Determine the output of the DAC in Figure 14-19(a) if the waveforms repre senting a scquence of 4-bit binar numbers in Figure 14-19(b) are applied to the inputs. Input Do is the least significant bit (LSB). 40 k) D, o W RE 0 1 2 3 4 5 6 7 8 9 101I 12 13 14 15 20 ΚΩ +5 V D, o M 1.0 k Do 0- +5 V 10 k D2 0W +5 V o Vout D2 +5 V 5 k. D3 0W (a) (b) FIGURE 14-19arrow_forwardA step up dc/dc converter has input voltage Vs = 9 V, the average output voltage Va = 15 average load current /g = 0.8 A. The switching frequency is f = 20 kHz, inductance is L = 0.3 mH and the parallel capacitance is C = 0.44 mF. Which one is the duty cycle k ? O 0.4 O 0.8 O 0.6 O 0.3arrow_forwardA step up dc/dc converter has input voltage Vs = 9 V, the average output voltage Va = 15 average load current /g = 0.8 A. The switching frequency is f = 20 kHz, inductance is L = 0.3 mH and the parallel capacitance is C = 0.44 mF. Which one is the peak current of inductor /2 ? 1.93 A 1.63 A 1.73 A O 1.83 Aarrow_forward
- | sketeh out the follewing signals: (a=5, b=3, c=2) a-) V = 15a(sin21000*ct) b-) V = 3b(cos(r500*ct)+3) c-) Assume that you measure the signal V1 using Digital Volt Meter(DVM) and ossiloscope. What will you read on the DVM display and oscilloscop dispaly when the input voltages are defined as 1-) V = 15a(sin2m1000*ct) 2-) V = 3b(cos(7500*ct)+3) Write down and sketch all the voltages for each case. Show all parameters, including period and maximum values of the signals. aR V AC aR V, aR What will you read at the DVM display when you read the voltages at AC mode What will you read at the DVM display when you read the voltages at DC rangearrow_forwardChange the MOD-8 counter in Figure to a MOD-16 counter, and connect the MSB to the multiplexer E input. Draw the Z waveform. 1 ΚΩ +Vcc W 13 1₂ lo Eight-input multiplexer 74HC151 SSS 17 $₂ S₁ So MOD-8 CLK- counter •JMMarrow_forwardA step up converter is operated with a duty cycle of k = 0.75. The input voltage is V, = 20V. and the load is: L= 5mH, R = 202. The minimum source current is I = 10A The maximum inductor current is %3D Select one: O a. None of these O b. 24 A Oc 12 A O d. 22 A O e. 16 Aarrow_forward
- Question 4 A boost converter has an input of 5V and an output of 20W at 15V. The minimum inductor current must be no less than 50% of the average. The output voltage ripple must be less than 1%. The switching frequency is 30kHz. Determine the duty ratio, minimum inductor value, and minimum capacitor value. Verify your answers using Matlab, show the inductor current is continues and its minimum is no less than 50% of its average. Furthermore, the output voltage ripple is less than 1%.arrow_forward1- Express the following RC circuit in state-space form. R ei eo i C eesarrow_forwardProblem 4 The following practical differentiator has V = 80 sin(wt), R₁ = 10 KM, R₂ = 500 KG and C= 150 µF. Find: A- The breaking frequency F B. The output voltage at 1000 F C The output voltage at f= 50 Hz. Vin RI HH R2 www Voutarrow_forward
- 19. The OTA in Figure 14-58 functions as an amplitude modulation circuit. Determine the output voltage waveform for the given input waveforms assuming K = 16 μS/MA. 100 mV 500 kHz Vin o VMOD +8 V +6 V-- +4 V-- +2 V- +1 V- 0 R₁ www 10 ΚΩ www III R₂ 10 ΚΩ 0 10 με 20 με 30 με 40 με 50 με VMOD +9 V OTA -9 V FIGURE 14-58 RBIAS 39 ΚΩ ww III RL out 10 ΚΩarrow_forwardDraw the small signal equivalent circuit of the following circuit. Note that C1 and C2 are large AC coupling capacitors. 5 VIO C1 RF Q1 C2 fem RL Voarrow_forward(c) A 2400 V, 1000 KVA, 0.85 power factor (PF) lagging, 50 Hz six-poles, Y-connected synchronous generator has a synchronous reactance of 1.4 2 and an armature resistance of 0.15 2. At 50 Hz, its friction and windage losses are 25 kW, and its core losses are 15 kW. The field circuit has a DC voltage of 230 V, and the maximum IF is 10 A. The resistance of the field circuit is adjustable over the range from 20 to 200 £2. The Open Circuit Characteristic (OCC) of this generator is shown in Figure Q1(c). Calculate the internal generated voltage, EA of this machine at rated conditions. (i) (ii) (iii) Determine the required field current to make Vr equal to 2400 V when the generator is running at rated conditions. If this machine is operating at rated conditions, determine the input torque, TAPP that must be applied to the shaft of this generator.arrow_forward
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