Meters

Front 1

5 meter types

Back 1

Voltmeter

Ammeter

Megohmmeter

Wattmeter

Front 2

Wattmeter measures

Back 2

Electrical power

Front 3

Megometer measures

Back 3

Measures high resistance or how good insulation is

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Voltmeter

Back 4

Voltage

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Ohmmeter

Back 5

Resistance

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Ammeter

Back 6

Amps and uses a clamp

Front 7

Things to consider when testing

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Is the the circuit energized

The measurements required

The value to obtain

If polarity matters

Front 8

Polarity matters somthimrs think about the positions in a circuit values change right?

Back 8

Front 9

Analog meters sometimes have non-linear lines this means

Back 9

It has unequal spaces

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Analog or Simpsons meters are

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Meters with arrows like in a clock

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Settings in digital

Back 11

Front 12

OL means

Back 12

Open loop

Or open switch

Front 13

If a meters auto ranging

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It set the proper scale make sure it's not in manual

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When testing polarity put

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Red lead on the positive and the black on the nrgative

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If the meter swings left when testing polarity

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It's an incorrect polarity

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Back 16

Read it

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When is polarity not important

Back 17

On a voltages

Front 18

How to test amps with a series ammeter

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Front 19

Clamp on ammeter are used by

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Clamping one conducter and then switching to ac or DC most are only ac

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Megometters need to be de-energized and

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And make sure no one is touching the circuit or meter 500 to 1000 volts go thro it

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Wattmeter instructions

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DE energize

Set to ac or dc

Set power value be careful the power can exceed the limit

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Do not exceed the power rating specified on the nameplate of a

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Wattmeter

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Read

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Front 24

Multimeters need all precautions

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Payed atention too

Front 25

Always DE energize before using an ammeter

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Boobies

Front 26

An analog ohmmeter can be zeroed by holding the leads together (short them out) and turn the adjustment know until the needle is positioned exactly on zero

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Front 27

How to read analog

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Front 28

How do you read settings when the value is higher or lower or in between a labeled setting?

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So your 2.5v but that's not labeled so read you 250 as normal then divide by 100 because 250 divided by 100 equals 2.5

Multiple if you need a higher value

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Rx1 and Rx100 means

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Reading resistance times 1 and reading resistance times 100

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Reading errors on analog do to perception are called

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Paralax

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To find values of notches on a Simpson or analog meter

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Take the two labeled values let's say 10 and 20 then subtract 20-10=10 then count the notches let's say there are 5 notches that means 10÷5=2 each notch is worth 2

So add your notches together then add the total to you previous value let's say 10 and 3 notches = 16

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Power is a rate of

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Change

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Black can't be the first colour label on a resistor

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Meaning zero can't lead

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Is tolerance isn't labeled the tolerance is

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20%

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Colour template should be

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Given

Front 36

How to get percentage

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