### Create a StudySoup account

#### Be part of our community, it's free to join!

Already have a StudySoup account? Login here

# LABORATORY ECE1201

Pitt

GPA 3.74

### View Full Document

## 58

## 0

## Popular in Course

## Popular in Electronics and Computer Technology

This 10 page Class Notes was uploaded by Macy Lowe on Monday October 26, 2015. The Class Notes belongs to ECE1201 at University of Pittsburgh taught by Staff in Fall. Since its upload, it has received 58 views. For similar materials see /class/229454/ece1201-university-of-pittsburgh in Electronics and Computer Technology at University of Pittsburgh.

## Similar to ECE1201 at Pitt

## Reviews for LABORATORY

### What is Karma?

#### Karma is the currency of StudySoup.

#### You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!

Date Created: 10/26/15

ECE l2l2Spring 2009 J Falk Due Dates and technical notes 1 No prelab is required for experiment la However you should come to the class on Tuesday January 13 with the values of IcQ VcQ RE R1 and R2 calculated based on a higher value of Vcc than the 10V value that I used in my discussion in class on Tuesday January 6 and Thursday January 8 Either use an approximate value of 5100 or use the value that you measure on the curve tracer The prelab for experiment lb is due Wednesday January 14 before 4 pm The prelab should include the calculation of all component values resistors and capacitors used in the emitter follower Please note you should always use a single component for each calculated value ie if you calculate 1010 ohms for a resistor use a l kohm resistor Avoid putting components in series or parallel Avoid using a decade box for a circuit component In the prelab you should predict all values that you are asked to measure in item 13 on the lab manual input and output resistances loaded and unloaded voltage gains of the two stage ampli er You should also explain how you plan to measure each of these values The lab report for experiment 1 is due on Tuesday January 27 N E e The prelab for the first part of experiment 2 DC characteristics is due on Wednesday Jan 21 I lectured on part of this material on January 15 and will talk some more about this material on Tuesday January 20 You MUST make curve tracer measurements on the FET used in experiment 2 as part of the prelab for experiment The entire prelab for the first part of experiment 2 will be these curve traces anal the calculation of K V anal VA from these traces Please do not calculate the value of K from a single value of ID Here is how to nd K Enter the experimentally found values of ID versus VGS from the curve tracer s display of the transfer function and select values of K so that the theoretical curve looks like the experimental curve Feel free to slightly change your value of V1 5 The prelab for the second part of lab 2 is due on Monday January 26 I will lecture on this material on Tuesday Jan 20 and Thursday Jan 22 Please remember to design a MOSFET ampli er for a gain of 20 Try to accomplish this with the drain resistor RD 10 k9 Feel free to change the supply voltage Remember the transistor always must operate in the saturated regime VDS Z VGS 7 V1 The design is tricky Raising the value of the supply voltage permits an increase in VGS which increases ID and in turn increases gm which increases the gain Butiif ID is too large the transistor leaves the saturated regime You may have to change the value of RD to produce a gain of 20 But noteincreasing RD appears to increase the gain Gain ignoring r0 ie the Early voltage and choosing a very large load resistor is equal to ingD Gain appears to varying linearly with RD However increasing RD also reduces the drain current which reduces gm What is the best way to choose RD and ID I think that you will bene t from employing a spread sheet or some other numerical aid to help you accomplish this design 0 gt1 Zsolt Poole a former ECE 1212 TA has approached this problem in a slightly different manner Here is a link to his notes The lab report for experiment 2 is due on Thursday February 5 I will lecture on Design 1 and the first several parts of Design 2 in my first Lab 3 lecture to be given on January 29 The prelab linked to this lecture should design the circuit discussed in Design 1 The prelab should answer the question asked in Design 1 regarding the usual technique used to measure impedance The prelab should answer the following questions regarding Design 2 a how do we modify Design 1 to provide an amplifier with 12 the gain What happens to the bandwidth when we do this b What is the maximum output current that the amplifier can produce and what is the minimum load resistance that amplifier can drive when the maximum output is Vcc2 Volts It will help to read my notes Experiment 3a as well as the rst paIt Design 2 of my notes for Experiment 3b Do not design the emitter follower discussed in design 2 That design and Design 3 will be part of the second pre lab for this experiment The prelab for the rst part of this experiment is due on Monday February 2 The second prelab for experiment 3 should contain a design for the emitter follower connected to the operational amplifier discussed in Design 2 There are only a limited number of 12 watt resistors available in the laboratory It is likely that you will need 12 resistors two in series or two in parallel can dissipate a total of one watt for the emitter resistor Onehalf watt resistors available only values between 50 ohms and 680 ohms are listed others are available 50 51 56 68 100 120 150 180 330 390 470 510 560 680 ohms This list was updated on February 3 2009 Be sure to look at the lecture notes 3b and the link within those notes to a suggested design methodology The prelab should also contain the design of the two circuits discussed in Design 3 For Design 3 the prelab should answer the question Why are we interested in an ampli er with a gain of 10 I lectured on this material on Tuesday February 3 The prelab for the second part oflab 3 is due on February 4 Wed The lab report for experiment 3 is due on Tuesday February 17 2009 8 The prelab for experiment 4 Part 1 Analog Linear Computation is due on Wednesday February 11 I lectured on this material on February 10 9 Experiment 4 parts II and III Prelab notes I will lecture on the material dealing with part II Instrumentation Ampli er on Thursday Feb 12 The prelab for part II is due on Monday Feb 16 Please a Analyze the simple difference ampli er used in ECE 1201 and discussed in the notes for experiment 4b Assume that the requirement R4R3 RzRl is satis ed by making R4 R2 and R3 R1 show that the input impedance for the simple difference ampli er The voltage vzvl divided by the current owing between v1 and vz is 2R1 This point is discussed in Sedra51h edition pages 845 b Derive the expression for the gain and input impedance either terminal of the instrumentation ampli er This was done in my lecture c Complete the design of the instrumentation ampli er as required in the lab manual I lectured on Part III the ramp generator on February 17 For the prelab portion dealing with the ramp generator In addition to answering the questions in the lab manual please explain what signal generator waveform will be used to drive the relay How will that waveform be generated The prelab for part III is due on Wed February 18 The lab report for Experiment 4 is due on Tuesday March 3 O I lectured on Experiment SA on Thursday February 19 The prelab for that material is due on Wed February 25 this is not a normal prelab due date For the prelab derive the transfer function of the low pass lter most of this is done in my lecture notes Please ll in the details Also design the two low pass lters determine all resistor and capacitor values for each lter As discussed in my lecture the lter requirements are suf cient to determine a the ratio RBRA ie the dc lter gain but not the values of the individual resistors and b the RC products but not the individual resistor and capacitor values You should plot the magnitude of the predicted transfer function versus frequency You can use MATLAB to generate this plot The MATLAB function to be used is called FREQS Please alter the defaults of FREQS so that your plot is linear in frequency and linear in the ratio of Voltage outputVoltage input VzVl The default is a loglog plot Please alter the default so that the plot shows this ratio versus frequency f not the default radian frequency w When you attempt to verify this transfer function experimentally be sure to record both input and output voltages ie data sufficient to find VzVl I will lecture on Experiment 5B bandpass filter on March 3 2009 The prelab for part B of experiment 5 will be due on March 4 In that prelab follow the steps given in the lecture and derive the transfer function of the bandpass filter Specify the component values used in the filter Plot the magnitude of the predicted frlter s transfer function versus frequency You can use MATLAB to generate this plot If the value of R2 increases or decreases by 10 plot the new magnitude transfer function use MATLAB The plots of the magnitude of the transfer function versus frequency for experiments 5A and 5B should be linear plots This will enable you to make theoryexperiment plots The default plot for most MATLAB transfer functions is a loglog plot 12 Iwill lecture on the last part oflab 5 5C Oscillators on March 17 and 19 The prelab for Experiment 5C will be due on Monday March 23 4 pm The prelab will be very simple to do if you read the relevant pages in the fifth edition of Sedra and Smith 117172 for the particular circuit and 116668 for basic properties of oscillators The lab report for experiment 5 is due on Tuesday March 31 2009 I lectured on Experiment 6 on Tuesday March 24 2009 The prelab for this experiment is due Wednesday March 25 For that prelab you should find and list the ASCII code for the first letter of the name of one member of your lab group Also explain how to set the 8Lh bit ofthe ASCII code See item lg ofthe lab manual In the prelab you should show by superposition that the output from the circuit shown in Fig 5 is approximately a sine wave 15 The lab report for experiment 6 is due on Tuesday April 7 16 We will begin experiment 7 by doing the R2R resistor DA I lectured on this DA on March 31 2009 The prelab for this DA will be due on April 1 Experiment 7a In your prelab a show how to hookup the R2R ladder network to produce a positive output The lab manual diagram shows the ladder network connected to the inverting terminal of the operational ampli er b show how to produce an output that varies from 0 to 3V as the digital signal varies from 0000 to 1111 This will require you to nd the actual value of the reference voltage produced by the counter in your kit You will also need to calculate the value of Ry used in the voltage divider shown in my lecture notes The values of R and 2R on the boards that are available in class are 1000 and 2000 ohms We will not do the weighted resistor D A this term l Experiment 7 Flash ND For the prelab design the combinational logic to determine the lsb of the threebit number The combination logic used for the other bits was given in my lecture For the prelab design a circuit to produce the reference voltages VlV7 The 339 comparators require pullup collector resistors What value will you use for these resistors Why The prelab for Experiment 7b is due on Wednesday April 8 To repeat the prelab should include a The values of the pullup resistor Why did you choose the particular value b How do you implement the combination logical necessary to determine the threebit digital output from the N D Show the circuit diagram that will be used to determine each of the bits including chips numbers and interconnections c How will you achieve the necessary reference voltages 0626 125 4375 V Show the circuit that you will use Warning Something may go wrong in the implementation of this ND If things don t go as planned please talk to either J Falk or D Perello 18 The lab report for experiment 7 is on Monday April 20 4 pm The report should be turned in to the ECE 1212 bin in the department office room 348 Please remember to return the R2R circuit board either with the report or in class There is a course exam on Thursday April 16 in room 360 900 1150 am The course grades should be available from mypittedu by the middle of the week of April 20 If you wish you can look at your final exam but not take it any time starting Monday April 27 I will be very busy grading exams in other courses before then I will keep the exams until Oct 1 at which time I will discard them ECE l2l2Spring 2009 J Falk Due Dates and technical notes 1 No prelab is required for experiment la However you should come to the class on Tuesday January 13 with the values of IcQ VcQ RE R1 and R2 calculated based on a higher value of Vcc than the 10V value that I used in my discussion in class on Tuesday January 6 and Thursday January 8 Either use an approximate value of 5100 or use the value that you measure on the curve tracer The prelab for experiment lb is due Wednesday January 14 before 4 pm The prelab should include the calculation of all component values resistors and capacitors used in the emitter follower Please note you should always use a single component for each calculated value ie if you calculate 1010 ohms for a resistor use a l kohm resistor Avoid putting components in series or parallel Avoid using a decade box for a circuit component In the prelab you should predict all values that you are asked to measure in item 13 on the lab manual input and output resistances loaded and unloaded voltage gains of the two stage ampli er You should also explain how you plan to measure each of these values The lab report for experiment 1 is due on Tuesday January 27 N E e The prelab for the first part of experiment 2 DC characteristics is due on Wednesday Jan 21 I lectured on part of this material on January 15 and will talk some more about this material on Tuesday January 20 You MUST make curve tracer measurements on the FET used in experiment 2 as part of the prelab for experiment The entire prelab for the first part of experiment 2 will be these curve traces anal the calculation of K V anal VA from these traces Please do not calculate the value of K from a single value of ID Here is how to nd K Enter the experimentally found values of ID versus VGS from the curve tracer s display of the transfer function and select values of K so that the theoretical curve looks like the experimental curve Feel free to slightly change your value of V1 5 The prelab for the second part of lab 2 is due on Monday January 26 I will lecture on this material on Tuesday Jan 20 and Thursday Jan 22 Please remember to design a MOSFET ampli er for a gain of 20 Try to accomplish this with the drain resistor RD 10 k9 Feel free to change the supply voltage Remember the transistor always must operate in the saturated regime VDS Z VGS 7 V1 The design is tricky Raising the value of the supply voltage permits an increase in VGS which increases ID and in turn increases gm which increases the gain Butiif ID is too large the transistor leaves the saturated regime You may have to change the value of RD to produce a gain of 20 But noteincreasing RD appears to increase the gain Gain ignoring r0 ie the Early voltage and choosing a very large load resistor is equal to ingD Gain appears to varying linearly with RD However increasing RD also reduces the drain current which reduces gm What is the best way to choose RD and ID I think that you will bene t from employing a spread sheet or some other numerical aid to help you accomplish this design 0 gt1 Zsolt Poole a former ECE 1212 TA has approached this problem in a slightly different manner Here is a link to his notes The lab report for experiment 2 is due on Thursday February 5 I will lecture on Design 1 and the first several parts of Design 2 in my first Lab 3 lecture to be given on January 29 The prelab linked to this lecture should design the circuit discussed in Design 1 The prelab should answer the question asked in Design 1 regarding the usual technique used to measure impedance The prelab should answer the following questions regarding Design 2 a how do we modify Design 1 to provide an amplifier with 12 the gain What happens to the bandwidth when we do this b What is the maximum output current that the amplifier can produce and what is the minimum load resistance that amplifier can drive when the maximum output is Vcc2 Volts It will help to read my notes Experiment 3a as well as the rst paIt Design 2 of my notes for Experiment 3b Do not design the emitter follower discussed in design 2 That design and Design 3 will be part of the second pre lab for this experiment The prelab for the rst part of this experiment is due on Monday February 2 The second prelab for experiment 3 should contain a design for the emitter follower connected to the operational amplifier discussed in Design 2 There are only a limited number of 12 watt resistors available in the laboratory It is likely that you will need 12 resistors two in series or two in parallel can dissipate a total of one watt for the emitter resistor Onehalf watt resistors available only values between 50 ohms and 680 ohms are listed others are available 50 51 56 68 100 120 150 180 330 390 470 510 560 680 ohms This list was updated on February 3 2009 Be sure to look at the lecture notes 3b and the link within those notes to a suggested design methodology The prelab should also contain the design of the two circuits discussed in Design 3 For Design 3 the prelab should answer the question Why are we interested in an ampli er with a gain of 10 I lectured on this material on Tuesday February 3 The prelab for the second part oflab 3 is due on February 4 Wed The lab report for experiment 3 is due on Tuesday February 17 2009 8 The prelab for experiment 4 Part 1 Analog Linear Computation is due on Wednesday February 11 I lectured on this material on February 10 9 Experiment 4 parts II and III Prelab notes I will lecture on the material dealing with part II Instrumentation Ampli er on Thursday Feb 12 The prelab for part II is due on Monday Feb 16 Please a Analyze the simple difference ampli er used in ECE 1201 and discussed in the notes for experiment 4b Assume that the requirement R4R3 RzRl is satis ed by making R4 R2 and R3 R1 show that the input impedance for the simple difference ampli er The voltage vzvl divided by the current owing between v1 and vz is 2R1 This point is discussed in Sedra51h edition pages 845 b Derive the expression for the gain and input impedance either terminal of the instrumentation ampli er This was done in my lecture c Complete the design of the instrumentation ampli er as required in the lab manual I lectured on Part III the ramp generator on February 17 For the prelab portion dealing with the ramp generator In addition to answering the questions in the lab manual please explain what signal generator waveform will be used to drive the relay How will that waveform be generated The prelab for part III is due on Wed February 18 The lab report for Experiment 4 is due on Tuesday March 3 O I lectured on Experiment SA on Thursday February 19 The prelab for that material is due on Wed February 25 this is not a normal prelab due date For the prelab derive the transfer function of the low pass lter most of this is done in my lecture notes Please ll in the details Also design the two low pass lters determine all resistor and capacitor values for each lter As discussed in my lecture the lter requirements are suf cient to determine a the ratio RBRA ie the dc lter gain but not the values of the individual resistors and b the RC products but not the individual resistor and capacitor values You should plot the magnitude of the predicted transfer function versus frequency You can use MATLAB to generate this plot The MATLAB function to be used is called FREQS Please alter the defaults of FREQS so that your plot is linear in frequency and linear in the ratio of Voltage outputVoltage input VzVl The default is a loglog plot Please alter the default so that the plot shows this ratio versus frequency f not the default radian frequency w When you attempt to verify this transfer function experimentally be sure to record both input and output voltages ie data sufficient to find VzVl I will lecture on Experiment 5B bandpass filter on March 3 2009 The prelab for part B of experiment 5 will be due on March 4 In that prelab follow the steps given in the lecture and derive the transfer function of the bandpass filter Specify the component values used in the filter Plot the magnitude of the predicted frlter s transfer function versus frequency You can use MATLAB to generate this plot If the value of R2 increases or decreases by 10 plot the new magnitude transfer function use MATLAB The plots of the magnitude of the transfer function versus frequency for experiments 5A and 5B should be linear plots This will enable you to make theoryexperiment plots The default plot for most MATLAB transfer functions is a loglog plot 12 Iwill lecture on the last part oflab 5 5C Oscillators on March 17 and 19 The prelab for Experiment 5C will be due on Monday March 23 4 pm The prelab will be very simple to do if you read the relevant pages in the fifth edition of Sedra and Smith 117172 for the particular circuit and 116668 for basic properties of oscillators The lab report for experiment 5 is due on Tuesday March 31 2009 I lectured on Experiment 6 on Tuesday March 24 2009 The prelab for this experiment is due Wednesday March 25 For that prelab you should find and list the ASCII code for the first letter of the name of one member of your lab group Also explain how to set the 8Lh bit ofthe ASCII code See item lg ofthe lab manual In the prelab you should show by superposition that the output from the circuit shown in Fig 5 is approximately a sine wave 15 The lab report for experiment 6 is due on Tuesday April 7 16 We will begin experiment 7 by doing the R2R resistor DA I lectured on this DA on March 31 2009 The prelab for this DA will be due on April 1 Experiment 7a In your prelab a show how to hookup the R2R ladder network to produce a positive output The lab manual diagram shows the ladder network connected to the inverting terminal of the operational ampli er b show how to produce an output that varies from 0 to 3V as the digital signal varies from 0000 to 1111 This will require you to nd the actual value of the reference voltage produced by the counter in your kit You will also need to calculate the value of Ry used in the voltage divider shown in my lecture notes The values of R and 2R on the boards that are available in class are 1000 and 2000 ohms We will not do the weighted resistor D A this term l Experiment 7 Flash ND For the prelab design the combinational logic to determine the lsb of the threebit number The combination logic used for the other bits was given in my lecture For the prelab design a circuit to produce the reference voltages VlV7 The 339 comparators require pullup collector resistors What value will you use for these resistors Why The prelab for Experiment 7b is due on Wednesday April 8 To repeat the prelab should include a The values of the pullup resistor Why did you choose the particular value b How do you implement the combination logical necessary to determine the threebit digital output from the N D Show the circuit diagram that will be used to determine each of the bits including chips numbers and interconnections c How will you achieve the necessary reference voltages 0626 125 4375 V Show the circuit that you will use Warning Something may go wrong in the implementation of this ND If things don t go as planned please talk to either J Falk or D Perello 18 The lab report for experiment 7 is on Monday April 20 4 pm The report should be turned in to the ECE 1212 bin in the department office room 348 Please remember to return the R2R circuit board either with the report or in class There is a course exam on Thursday April 16 in room 360 900 1150 am The course grades should be available from mypittedu by the middle of the week of April 20 If you wish you can look at your final exam but not take it any time starting Monday April 27 I will be very busy grading exams in other courses before then I will keep the exams until Oct 1 at which time I will discard them

### BOOM! Enjoy Your Free Notes!

We've added these Notes to your profile, click here to view them now.

### You're already Subscribed!

Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'

## Why people love StudySoup

#### "Knowing I can count on the Elite Notetaker in my class allows me to focus on what the professor is saying instead of just scribbling notes the whole time and falling behind."

#### "I used the money I made selling my notes & study guides to pay for spring break in Olympia, Washington...which was Sweet!"

#### "There's no way I would have passed my Organic Chemistry class this semester without the notes and study guides I got from StudySoup."

#### "It's a great way for students to improve their educational experience and it seemed like a product that everybody wants, so all the people participating are winning."

### Refund Policy

#### STUDYSOUP CANCELLATION POLICY

All subscriptions to StudySoup are paid in full at the time of subscribing. To change your credit card information or to cancel your subscription, go to "Edit Settings". All credit card information will be available there. If you should decide to cancel your subscription, it will continue to be valid until the next payment period, as all payments for the current period were made in advance. For special circumstances, please email support@studysoup.com

#### STUDYSOUP REFUND POLICY

StudySoup has more than 1 million course-specific study resources to help students study smarter. If you’re having trouble finding what you’re looking for, our customer support team can help you find what you need! Feel free to contact them here: support@studysoup.com

Recurring Subscriptions: If you have canceled your recurring subscription on the day of renewal and have not downloaded any documents, you may request a refund by submitting an email to support@studysoup.com

Satisfaction Guarantee: If you’re not satisfied with your subscription, you can contact us for further help. Contact must be made within 3 business days of your subscription purchase and your refund request will be subject for review.

Please Note: Refunds can never be provided more than 30 days after the initial purchase date regardless of your activity on the site.