Project Two - Wind Belt - 081

Equipment RemindersEquipment Reminders

MultimetersMultimeters WrenchesWrenches MagnetsMagnets D Cell BatteriesD Cell Batteries Magnet WireMagnet Wire Wood ScrewWood Screw Sand Paper Sand Paper Frame & BeltsFrame & Belts CoilsCoils LED’sLED’s Alligator CablesAlligator Cables Zip Lock BagsZip Lock Bags

Wind BeltWind BeltProject Two in EGR111Project Two in EGR111

Week 1 – Frame and Belt ConstructionWeek 1 – Frame and Belt ConstructionWeek 2 – Coil ConstructionWeek 2 – Coil ConstructionWeek 3 – Assembly and TweakingWeek 3 – Assembly and TweakingWeek 4 – Final Adjustments and GradingWeek 4 – Final Adjustments and Grading

Neodymium-Iron-Boron Neodymium-Iron-Boron MagnetsMagnets Neodymium magnets are the Neodymium magnets are the

strongest permanent magnets strongest permanent magnets known. They are sometimes known. They are sometimes used in hard drives. used in hard drives.

The magnets that you are about The magnets that you are about to use were purchased from to use were purchased from www.rare-earth-magnets.comwww.rare-earth-magnets.com for about 50 cents each.for about 50 cents each.

http://www.rare-earth-magnets.com/

Magnet SafetyMagnet Safety

Children should not be allowed to play with Children should not be allowed to play with magnetsmagnets. Children should be strictly . Children should be strictly supervised by an adult when handling supervised by an adult when handling magnets. Children and adults should not magnets. Children and adults should not ingest magnets or place magnets in any body ingest magnets or place magnets in any body orifice such the ear, nose or mouth. Ingestion orifice such the ear, nose or mouth. Ingestion of magnets is very hazardous. If magnets are of magnets is very hazardous. If magnets are ingested or aspirated to the lungs, immediate ingested or aspirated to the lungs, immediate medical attention is required. medical attention is required.


Rare-Earth magnets are fragile and can Rare-Earth magnets are fragile and can break easilybreak easily. These . These magnets will become demagnetized when exposed to high heat. magnets will become demagnetized when exposed to high heat. These magnets are powerful and can accelerate at high speeds These magnets are powerful and can accelerate at high speeds toward each other and toward ferrous material. When these toward each other and toward ferrous material. When these magnets come together quickly, they can shatter and break magnets come together quickly, they can shatter and break sending particles at speed. These magnets can also pinch sending particles at speed. These magnets can also pinch strongly if allowed to come together against the skin. You should strongly if allowed to come together against the skin. You should always wear gloves and eye protection when handling large always wear gloves and eye protection when handling large magnets. Very large magnets can pose a crushing hazard and magnets. Very large magnets can pose a crushing hazard and should not be handled. should not be handled.

Pull force descriptions on this site are estimates based on ideal Pull force descriptions on this site are estimates based on ideal conditions and should not be used in application design. conditions and should not be used in application design. Variations in iron content, thickness, temperature and surface Variations in iron content, thickness, temperature and surface finish and condition will all reduce these ratings. Magnets should finish and condition will all reduce these ratings. Magnets should never be used to lift objects over people.never be used to lift objects over people.


Rare-earth magnets have strong Rare-earth magnets have strong magnetic fields that can damage magnetic fields that can damage electronic equipment and magnetic data electronic equipment and magnetic data storage media. You should keep these storage media. You should keep these magnets away from electronic magnets away from electronic equipment, TV’s, monitors, computers, equipment, TV’s, monitors, computers, credit cards, video tapes, and other credit cards, video tapes, and other magnetic media. magnetic media.


Neodymium rare-earth magnets should not be burned. These Neodymium rare-earth magnets should not be burned. These magnets can ignite and burn at high intensity. These magnets magnets can ignite and burn at high intensity. These magnets should not be drilled or machined. Drilling may cause high heat to should not be drilled or machined. Drilling may cause high heat to develop resulting in ignition. The magnets may shatter and break develop resulting in ignition. The magnets may shatter and break when drilled.when drilled.

Neodymium rare-earth magnets are subject to corrosion. Magnets Neodymium rare-earth magnets are subject to corrosion. Magnets that have corroded have changed their physical properties. The that have corroded have changed their physical properties. The Material Safety Data Sheets (MSDS) for the component materials Material Safety Data Sheets (MSDS) for the component materials (Iron, Neodymium, Boron, Nickel, and Copper) should be (Iron, Neodymium, Boron, Nickel, and Copper) should be consulted prior to the use, handling or transportation of corroded consulted prior to the use, handling or transportation of corroded neodymium rare-earth magnets. neodymium rare-earth magnets.

FacilitatorFacilitator

Magnets in Pill Box (with your team number)Magnets in Pill Box (with your team number) 1 Wood Screw1 Wood Screw 1 D Cell Battery1 D Cell Battery 1 6-inch piece of magnet wire1 6-inch piece of magnet wire 1 Sand Paper1 Sand Paper

Magnetic CompassMagnetic Compass

Desktop DemoDesktop Demo Try to balance a disk magnet on its side in your Try to balance a disk magnet on its side in your

desk.desk. Optional: Try to suspend a magnet from a thread.Optional: Try to suspend a magnet from a thread.

1 Short Wire

1 D Cell Battery

1 Nail or Screw

1 Disk Magnet

Lorentz Force MotorLorentz Force Motor Construct the simple motor shown in the Construct the simple motor shown in the

figure. figure. Put the magnet on the head of your nail. Put the magnet on the head of your nail. Touch the sharp end of the nail to the Touch the sharp end of the nail to the

negative side of the battery.negative side of the battery. Hold the wire to the positive side of the Hold the wire to the positive side of the

battery.battery. Lightly touch the wire to the edge of the Lightly touch the wire to the edge of the

magnet.magnet.

What are things that you can do to What are things that you can do to change the direction of the motor?change the direction of the motor?

How can you increase the speed of the How can you increase the speed of the motor?motor?

Multimeters - GatekeeperMultimeters - Gatekeeper

Continuity Continuity Open or ShortOpen or Short Beep Beep

VoltageVoltage AC or DCAC or DC ~ means AC~ means AC

FrequencyFrequency ResistanceResistance CurrentCurrent CapacitanceCapacitance Miscellaneous FunctionsMiscellaneous Functions

Note: The Hold button can be used to lock-in or remember a measured voltage or frequency value.

Recorder

Gatekeeper

Timekeeper

FacilitatorTimekeeper Gatekeeper

Facilitator Recorder

Project Two Grading Project Two Grading (10pts each)(10pts each)

Does the wind belt function smoothly for Does the wind belt function smoothly for at least 30 seconds?at least 30 seconds?

Does an LED shine brightly when Does an LED shine brightly when attached?attached?

Is the coil attached to the frame well? Is the coil attached to the frame well? Does the magnet move regularly in the Does the magnet move regularly in the

presence of the coil? presence of the coil? Is the coil neatly wound and maintained?Is the coil neatly wound and maintained?

Project Two Grading Project Two Grading (25 pts (25 pts each)each)

Peak Output Voltage (Goal > 4V)Peak Output Voltage (Goal > 4V) Teams must use the AC (~) setting on the Teams must use the AC (~) setting on the

multimeter and press the Hold button to multimeter and press the Hold button to store values and show the instructor.store values and show the instructor.

The Recorder must show the instructor 3 The Recorder must show the instructor 3 “held” values on Wednesday.“held” values on Wednesday.

Frequency (Goal > 30Hz)Frequency (Goal > 30Hz) The Timekeeper must show the instructor 3 The Timekeeper must show the instructor 3

“held” values on Wednesday.“held” values on Wednesday.

Note: Project Two grades will not be available during class but will be posted online for review. Please do not ask for a Project Two grade during class.

Gather Parts with your Team Gather Parts with your Team NumberNumber

Wrench Wrench MultimeterMultimeter Frame and BeltFrame and Belt CoilCoil MagnetsMagnets LED’s LED’s

Optional: One team member may take these home over the holidays.

These must be returned today at the end of class.

Today’s PlanToday’s Plan

First, try to light your LED with the wind belt First, try to light your LED with the wind belt device.device.

Second, try to measure the AC (~) voltage and Second, try to measure the AC (~) voltage and frequency with the multimeter using the Hold frequency with the multimeter using the Hold button.button.

Next, try different belt tensions and magnet Next, try different belt tensions and magnet placements to maximize your output voltage placements to maximize your output voltage and frequency.and frequency.

Last, find a time for one more team meeting Last, find a time for one more team meeting before Wednesday of next week. Use this before Wednesday of next week. Use this meeting to develop a method to attach the coil meeting to develop a method to attach the coil to the frame so that it does not shake.to the frame so that it does not shake.

New DayNew Day

Today’s PlanToday’s Plan Discuss the contents final exam. Discuss the contents final exam. User clickers to answer problems 19-26 User clickers to answer problems 19-26

from Homework 12.from Homework 12. Finish integrals on page 3 with help from Finish integrals on page 3 with help from

me.me. Attach the coil to the frame for partial Attach the coil to the frame for partial

grading today. grading today. Plan one more meeting with your team Plan one more meeting with your team

between now and Wednesday if needed.between now and Wednesday if needed.

Final ExamFinal Exam

See the Review Sheet online.See the Review Sheet online. Focus on Chapter 10.Focus on Chapter 10. Focus on Homework 11 and 12.Focus on Homework 11 and 12. Review all of the multiple choice Review all of the multiple choice

questions from the in-class handouts.questions from the in-class handouts. Bring your book to the Exam on Monday Bring your book to the Exam on Monday

at 1:00PM.at 1:00PM.

Wind BeltWind BeltProject Two in EGR111Project Two in EGR111

Week 1 – Frame and Belt ConstructionWeek 1 – Frame and Belt ConstructionWeek 2 – Coil ConstructionWeek 2 – Coil ConstructionWeek 3 – Assembly and TweakingWeek 3 – Assembly and TweakingWeek 4 – Final Adjustments and GradingWeek 4 – Final Adjustments and Grading

Project Two Grading Project Two Grading (10pts each)(10pts each)

Does the wind belt function smoothly for at Does the wind belt function smoothly for at least 30 seconds?least 30 seconds?

Does an LED shine brightly when attached?Does an LED shine brightly when attached? Is the coil attached to the frame well? Is the coil attached to the frame well? Does the magnet move regularly in the Does the magnet move regularly in the

presence of the coil? presence of the coil? Is the coil neatly wound and maintained?Is the coil neatly wound and maintained?

EGR215 and EGR215 and PHY252PHY252Wind Belt Circuit AdditionsWind Belt Circuit Additions

Pair-up and locate the following:Pair-up and locate the following:Wrench, Multimeter, Windbelt, Heathkit BoardWrench, Multimeter, Windbelt, Heathkit Board

EGR215 & PHY262EGR215 & PHY262

LEDLED Adjust the belt tension, magnet position, and coil so Adjust the belt tension, magnet position, and coil so

that the LED flashes when held in front of a fan.that the LED flashes when held in front of a fan. Peak Output Voltage (Goal > 2.5V)Peak Output Voltage (Goal > 2.5V)

Teams must use the AC (~) setting on the Teams must use the AC (~) setting on the multimeter and press the Hold button to store values multimeter and press the Hold button to store values and show the instructor.and show the instructor.

Frequency (Goal > 45Hz)Frequency (Goal > 45Hz) Again use the Hold button to lock in the values and Again use the Hold button to lock in the values and

show your instructor.show your instructor.


Dual LED’sDual LED’s Now connect 2 LED’s in parallel so that they Now connect 2 LED’s in parallel so that they

flash in an alternating fashion.flash in an alternating fashion.


Bridge RectifierBridge Rectifier Use 5 Diodes to rectify the output from the Use 5 Diodes to rectify the output from the

coil. Connect 1 LED across the bridge.coil. Connect 1 LED across the bridge.


Filter CapacitorFilter Capacitor Connect a capacitor in parallel with you Connect a capacitor in parallel with you

LED. LED. What capacitance gives you a steady light What capacitance gives you a steady light

corresponding to a DC voltage?corresponding to a DC voltage?


Half Wave RectifierHalf Wave Rectifier Now try to use 1 LED, 1 Diode, and 1 Now try to use 1 LED, 1 Diode, and 1

Capacitor to perform the same task.Capacitor to perform the same task. Now try to use 1 LED and 1 Capacitor to Now try to use 1 LED and 1 Capacitor to

perform the same task.perform the same task.

Project Two - Wind Belt - 081

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