Electromagnetic Buzzer
Copyright 1978 Sci-Ed Services
Target Grade: A (or A+)*       Bonus Points: 20
NOTICE!!Read the "General Guidelines" first! Then, read this...
» - » You must have a project design form signed by your science teacher before  you begin your project  The project design form and this form must be returned with your project.  Failure to return both forms will result in a penalty of 5%.  If you begin your project before obtaining  your science teacher's signature on the project design form, your project may be disqualified. 
» - » Check the TARGET GRADE (most likely your  maximum grade) at the top of the page.
» - » You may not  use AC electricity to power your project.  Only DC electricity of less than 5 amperes & 15 volts is permitted.
» - » You may not copy another student's design for your project (except for bridges & towers).  Yours must be significantly different.
» - » You may not do the same project twice without permission from your science teacher.
» - » In order to earn  “bonus points” and extra credit, your project must be handed in by the due date, and must earn at least 96 %.
» - » Projects handed in more than 4 days late will not be presented or tested in class.
» - » You must complete a project design form and get it signed by your teacher before you begin your project.
OBJECTIVE  - The objective of this exercise is to build a battery powered buzzer that can be heard easily from a distance of 10 m or more.

PROJECT GUIDELINES
 1.  Read the INDEPENDENT PROJECT GENERAL GUIDELINES first.
 2.  Complete a project design form and get it signed by your science teacher.
 3.   Your buzzer must not contain any pre-manufactured parts other than wire, screws, nuts, bolts, nails and pieces of non-magnetized metal.
 4.  Your device must use electromagnetic force to make a buzzing or ringing sound that can be heard at a distance of 10 m by most of your classmates.
 5.  YOU MAY NOT USE A KIT, PREMANUFACTURED ELECTROMAGNETS OR COILS.
 6.  YOU MAY NOT USE ALTERNATING CURRENT (A.C.).
 7.   MAXIMUM  OPERATING VOLTAGE FOR THIS PROJECT IS 15 VOLTS D.C.
 8.  If you do not have a design of your own, obtain an instruction sheet from your teacher for building the project.
   NOTE:  A working buzzer of your own design will earn extra credit.*
 9.  Demonstrate the completed project to a class and explain the operation of the buzzer.
10. See the Grading Criteria for how you can earn an A+.*

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