ECT 246 Week 1 Homework
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ECT 246 ECT/246 ECT 246 Week 1 Homework
ECT 246 Week 1 iLab
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TCO #1:
Given an application requiring an AC to DC regulated power supply discuss the block diagram of the supply, and how its internal subsystems are related, using the appropriate data sheets, determine the device's operating parameters, calculate, simulate and measure the power supply's electrical parameters.
ECT 246 Week 2 Homework
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ECT 246 ECT\246 ECT 246 Week 2 Homework
ECT 246 Week 2 iLab Transistor Circuits
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Part A-Transistor Circuits
TCO #2:
Given an application requiring a single-stage common emitter BJT amplifier and a common source JFET amplifier with voltage-divider biasing use the device's data sheet to establish the operating conditions calculate, simulate, and measure the input and output parameters.
ECT 246 Week 3 Homework
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Chapter 22
2) Determine the output polarity for each of the op-amps shown inFigure 22.47.
4) Determine the maximum peak-to-peak output voltage for the amplifier shown inFigure 22.49.
6) The amplifier in Problem 4 has a voltage gain of 220. Determine the maximum allowable peak-to-peak input voltage for the circuit.
12) Determine the maximum operating frequency for the amplifier shown inFigure 22.53.
14) Perform a complete analysis of the amplifier shown inFigure 22.55
16) Perform a complete analysis of the amplifier shown inFigure 22.57.
20) Perform a complete analysis of the amplifier shown inFigure 22.61.
22) Perform a complete analysis of the voltage follower shown inFigure 22.63.
24) An op-amp has a unity-gain frequency of 14 MHz. Determine the bandwidth of the device when ACL= 320.
ECT 246 Week 3 iLab Op-Amps
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Part A-Op Amps
TCO #3:
Given an operational amplifier (op-amp) circuit schematic, calculate, simulate and measure the input and output voltages, impedance, and signal gain for a inverting, non-inverting, and voltage follower op-amp configurations.
A. Define the basic concepts of an op-amp including its symbol, input modes such as differential inputs, common mode rejection ratio, input and output impedance, slew rate and negative feedback.
B. Examine a common op-amp's data sheet such as a LM741C to determine the device's, electrical characteristics, and standard applications.
ECT 246 Week 4 Homework
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ECT 246 ECT/246 ECT 246 Week 4 Homework
ECT 246 Week 4 iLab
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Part A: Audio Amps
TCO #4:
Given an audio amplifier application that uses an integrated amplifier, examine the overall amplifier's performance and verify the operation by using suitable input and output circuits.
ECT 246 Week 5 HomeworkECT 246 ECT/246 ECT 246 Week 5 Homework
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ECT 246 ECT/246 ECT 246 Week 5 Homework
ECT 246 Week 5 iLab Op-Amps
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In week five, you will create several circuits using the operation amplifiers you studied earlier. An op-amp can be configured to perform special applications found in everyday electronic equipment. These include comparators, level detectors, summing amplifiers and digital to analog converters.
A.Describe the operation of a level detector.
a.Explain the operation of the following circuit.
B.Determine the output of a level detector for a given reference voltage. Simulate a level detector and verify that the simulated voltages agree with the calculated values.
C.Explain the operation of a summing amplifier and how the output voltage is calculated based on the input values.
E.Calculate the output voltage of a three input summing amplifier.
F.Simulate a summing amplifier with three inputs, measure the results and compare them to the calculated values.
ECT 246 Week 6 Homework
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ECT 246 ECT/246 ECT 246 Week 6 Homework
ECT 246 Week 6 iLab Filters and Oscillators
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Part A-Active Filters
Week six addresses the concept of active filters and oscillators. The low, high, bandpass and notch active filters, their circuits, and operating parameters are covered. The Wein-bridge RC oscillator, its configuration, operation and circuit is discussed.
TCO #6:
Given an application requiring active filters calculate, simulate and measure filter characteristic of a low-pass, high-pass, band-pass, and notch filter.
Part B- Oscillators
TCO#7:
Given an oscillator application, such as a tone generator, determine the operating parameters and calculate and measure the oscillator's voltage, frequency and relative stability.
Part C-Filters and Oscillator Simulations
1.The circuit below is a two-pole high-pass Butterworth filter. The upper critical frequency should be 1.12kHz. Find the required value for R4 and the closed loop gain. Verify the circuit operation in Multisim. Make the necessary changes to the circuit and verify its operations. The Multisim file (ECT 246 _Week_6_Two_high_trouble.ms) can be found in Doc Sharing, week 7.
ECT 246 Week 7 Homework
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ECT 246 ECT/246 ECT 246 Week 7 Homework
ECT 246 Week 7 iLab 7
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TCO #8:
Given a DC switching application such as driving a motor in one and two directions use a SCR and a transistor and an H-bridge driver to successfully perform the operation, calculate and measure the operating voltages and currents.
Part B-Optical Devices
TCO#9:
Given an application that requires electrical isolation choose an appropriate optical isolation device to provide the necessary isolation for that particular application.
ECT 246 Week 1 Quizbq
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ECT 246 Week 1 Quiz
ECT 246 Week 2 quiz
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1. TCO 1) What is the frequency of the ripple voltage for a full-wave rectifier with an input of 20 Vrms, 60 Hz?
2. (TCO 1) As the AC voltage at the transformer primary decreases, the peak voltage out of the diode bridge will
3. (TCO 1) If a diode on the diode bridge opens, what is the result?
4. (TCO 2) Coupling capacitors are used in ______.
5. (TCO 2) If the BJT is saturated, _____
6. (TCO 2) For the waveforms given below, Ch A is on top and Ch B is on bottom. Calculate the gain and phase difference.
(TCO 1) Find the following for an input of 120 VAC(RMS), 60 hertz, given a 10:1 stepdown transformer. The secondary is less voltage than the primary. Rload is 100 ohms. Round off to the nearest whole number.
1a: Primary or input peak voltage =
1b: Secondary peak voltage =
1c: Secondary peak current =
(TCO 1) For the block diagram below, find the following if Vsecondary = 18Vrms, 60 Hz, Rload = 150 ohms. Round off to the tenths place. The transformer ratio is 6.67:1.
(TCO 2) Given the resistance of the servo motor is 500 ohms, and beta is 200, find the following: Maximum and minimum collector currents, Vout and Ib when Vin is 5 volts.
(TCO 2) For the circuit below with Vcc = 10V and Beta = 200, find Ic and Vce.
ECT 246 Week 6 Quiz
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1. (TCO 5) If Va = 3V, what is Vout?
2. (TCO 3) If Vin = 1V, and Rload = 1k ohm, what is the current through Rload?
3. (TCO 4) If an audio amplifier integrated circuit uses a dual power supply of +/- 30V for the power supply, will there be a capacitor on the output of the audio amp? Why or why not?
4. (TCO 7) Describe the effect of gain on an oscillator loop.
5. (TCO 6) The filter below right is a _______ pass filter, andit is made with one RC circuit the maximum rolloff will be ________ db/decade.
HPF = High-Pass Filter, LPF = Low-Pass Filter, BPF = Band-Pass Filter, BSF= Band-Stop Filter
(TCO 2) For the circuit below, if Vcc is 20 volts and Rb is 4.3k ohms, find the base and collector voltages and currents for an input of 0V and 5V. Beta = 300, the motor resistance is 100 ohms.
(TCO 1) Find the following for an input of 120 VAC(RMS), 60 hertz, given a 20:1 stepdown transformer, and a full-wave bridge rectifier. Rload is 70 ohms. Round off to the nearest tenths place.
(TCO 5) If the resistance of the thermistor is 900 ohms, what is Vout? Is the motor on or off?
(TCO 6) For the filter below, if C = 0.1ufd, this is a _______ pass filter with a roll-off of ________ db/decade and a cutoff frequency of ________.