Using a Multimeter

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					 START        Daily Sprint


1. Is a non-metal a conductor, insulator, or
   semiconductor?
2. Is a metalloid a conductor, insulator, or
   semiconductor?
3. Draw a manganese atom (Atomic
   number: 25).
            Quick Review
• What are some characteristics of metals?
• How many valence electrons does a
  conductor have?
• How many valence electrons does an
  insulator have?
• What are some characteristics of non-
  metals?
Using a Multimeter
      Part 1
   What is a Multimeter?

An instrument for measuring the
properties of an electrical circuit
        Who Uses Multimeters?
•Electrical Engineers    •Chemists
•Electronics Engineers   •Networking Engineers
•Scientists              •Computer Engineers
•Technicians             •Many Others . . .
•Electricians
   Manual vs. Auto Ranging

Manual
The user is responsible
 for choosing a setting
 by anticipating the
 output.
Always choose a
 setting higher than
 what you think the
 reading will be.
          Manual vs. Auto Ranging
Where should you set the meter if you
expect a reading around . . .

6 volts
50 millivolts
800 millivolts
800 volts
125 volts
Manual vs. Auto Ranging
          Auto
          The meter adjusts
           based on the input to
           provide the most
           detailed reading.
          Auto ranging meters
           are generally a little
           more expensive.
                Test Leads


    Standard Test Leads




                          Hook Leads
Alligator Clip Leads
                    Continuity
The continuous flow through a component or
an entire circuit

If the answer to the questions below is yes,
then there is continuity.

Is the material a conductor?

Is there an uninterrupted path between the two points?
       Testing for Continuity
Method 1
There will be a speaker
icon where resistance is
measured.

The meter will beep to
indicate continuity.
        Testing for Continuity
Method 2
Turn the dial to a setting
for Ohms.

The meter will read zero
to indicate continuity.
Image Resources
Microsoft, Inc. (2008). Clip Art. Retrieved September 10, 2008, from
   http://office.microsoft.com/en-us/clipart/default.aspx

				
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