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UW EE 215 - Study Notes

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EE 215 Laboratory 1 Page 1Introduction to Circuit AnalysisDue: At recitation the week of April 9-13.ObjectivesAt the end of this lab, you will be able to:- check continuity with a multimeter- describe breadboard internal connections- create circuits using breadboard connections- measure dc voltage, current and resistance using a multimeter- identify resistors by value- calculate resistance from dc voltage and current measurements- calculate power consumption from dc voltage and current measurements- validate voltage divider calculations by experiment- validate current divider calculations by experiment- plot voltage-current relationships for non-linear devicesThe circuits covered in this laboratory are the beginning basics of an area of electrical engineering called Electronic Circuits, Devices and Transducers at UW. You can find a summary of this area of specialization within electrical engineering in your supplemental notes for the EE 215 course. The notes are part of your reading assignment. Later labs will touch on some of the other areas of specialization.Materials and SuppliesHere is a list of what you need for this lab, where to get it and about how much it will cost:What Where How MuchMultimeter Electronics Store $30-50Breadboard EE stores or Electr. Str $7.10Jumper Wire Kit EE stores or Electr. Str $6.00Parts Kit EE stores only $12.909V Battery Any store $2.50Groups may choose to purchase one multimeter and move it from person to person to take measurements, although I suspect you may find that it is more convenient for each individual to get their own meter. Groups may also try to share jumper wire kits, although there is no guarantee there is enough wire in one for all group members to do each circuit in every lab. Every individual must purchase their own breadboard, parts kit and battery.Multimeter: You need a multimeter that can measure ac and dc voltage, dc current and resistance. Ones that measure ac current, frequency and/or capacitance can be useful in the long run, but are not required for the course. A good multimeter costs $40-50, and you can spend more if you want to. You might be able to scrape by under $20 with the piece of junk special. Before you take the low road, think about this: a good multimeter will be with you for years (I still have mine from 1969 - rc) and is a useful part of a house, apartment or automotive toolkit, as well as essential for any electronics work.Local electronics stores:- Radio Shack: 4223 University Way NE (206) 632-4720 or University Village Mall (206) 523-0534- Active Electronics: 13107 Northup Way, Bellevue (425) 881-8191, has a 5% student discountYou can also find multimeters at Sears! Or from the Web (allow enough time for delivery!):D. Wilson (1/11/01)R.D. Christie (3/21/01)EE 215 Laboratory 1 Page 2- www.newark.com- www.digikey.com- www.jameco.comBreadboard: Typically a piece of white plastic with lots of tiny little holes in it. You stick wires and component leads into the holes to make circuits. Some of the holes are already electrically connected with each other. The holes are 0.1 inch apart, which is the standard spacing for leads on integrated circuit dual in-line packages. You will test the connections in this lab. You can purchase breadboards at EE stores. Yes, breadboards from other sources are just fine, though from what I've seen EE stores is decent value for money. Breadboards are used in other electronics courses in thedepartment.Jumper Wire Kit: This kit contains assorted lengths of pre-stripped wire. (Stripping means removing the insulation from an end of a wire.) Working with pre-cut and pre-stripped wire is much, much easier than cutting and stripping your own wire. Purchase from EE stores. (EE stores has some free breadboard wire in uncut, unstripped form. To make use of this wire you will need the needle nose pliers, diagonal cutters and wire strippers mentioned below as optional stuff. The jumper wire kit is undoubtedly more convenient and cheaper than buying the tools.)Parts Kit: This kit contains components for all the labs in the course. Because it is course-specific, it can only be purchased at EE stores. You can probably find the components from the kit elsewhere, but, like the wires only more so, having all the parts you need in one place, and having them be mostly the right parts, isa real convenience.9V Battery: This is the standard 9V transistor radio battery with the snaps on the top, as sold in drugstores, convenience stores, grocery stores, etc, etc, etc.Optional Stuff: If you get a multimeter that does not have clips at the end of at least one set of leads (sometimes these are an option), you might want to invest in a pair of wires with alligator clips on either end. This can make taking measurements much more convenient, and they're cheap. Get the small ones.If neatness in circuit construction is important to you, you can buy a pair of needle-nosed pliers to make neat, precise bends without annoying your fingers, a pair of diagonal cutters to snip leads and wires to length, and a wire stripper to remove the insulation from the newly cut wire ends. Combination tools tend to work less well than separate tools, especially the cheap ones! But needlenose-cutter combinations are common. Note that making the circuit neat will take extra time (although it can improve clarity of understanding) and you will be graded on the function of your circuits, not on their appearance.Parts for This LabSeparate and identify the following from your parts kit:D. Wilson (1/11/01)R.D. Christie (3/21/01)Breadboard holes. Usually the inner horizontalrows of five are interconnected. The outer twovertical columns may have entire columnsconnected, or five holes at a time.EE 215 Laboratory 1 Page 3- 30 - 1/4 Watt, 5% tolerance resistor (Rings: Orange Black Black Gold)- Mystery resistor (Rings: Brown Black Brown Gold)- 1 k- 1/4 Watt, 5% tolerance resistor (Rings: Brown Black Red Gold)- 1.5- 1/4 Watt, 5% tolerance resistor (Rings: Brown Green Red Gold)- Diode (1N4148)- 1000 - potentiometer (1/4 Watt)- Tweaker- 9V battery connectorResistors are the small light brown tubular things with wires (leads) sticking out of each end and four colored rings on the body. The rings are closer to one end than the other, and the ring nearest the end is the first ring. To find out what the rings mean, look in Appendix E of Dorf and Svoboda (your text) or search for "resistor color code" on the web. (Suddenly the mystery resistor is not


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