daily sprint 1.is a non-metal a conductor, insulator, or semiconductor? 2.is a metalloid a...
TRANSCRIPT
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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).
START
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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?
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Using a MultimeterPart 1
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What is a Multimeter?
An instrument for measuring the properties of an electrical circuit
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Who Uses Multimeters?•Electrical Engineers•Electronics Engineers•Scientists•Technicians•Electricians
•Chemists•Networking Engineers•Computer Engineers•Many Others . . .
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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.
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Manual vs. Auto Ranging Where should you set the meter if you expect a reading around . . .
1000 volts200 volts
20 volts
2000 millivolts
200 millivolts
6 volts
50 millivolts
800 millivolts
800 volts
125 volts
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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.
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Test Leads
Standard Test Leads
Alligator Clip LeadsHook Leads
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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?
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Testing for Continuity
Method 1
There will be a speaker icon where resistance is measured.
The meter will beep to indicate continuity.
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Testing for Continuity
Method 2
Turn the dial to a setting for Ohms.
The meter will read zero to indicate continuity.
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Image Resources
Microsoft, Inc. (2008). Clip Art. Retrieved September 10, 2008, from http://office.microsoft.com/en-us/clipart/default.aspx