Voltage Divider

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Added : 2017-04-13 Views :149K

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Voltage Divider




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Presentations text content in Voltage Divider

Slide1

Voltage Divider

Slide2

Series Circuits

Take a series circuit with two resistorsSince each is the same resistance, they use up the same amount of voltage, 6VTherefore the voltage at point A is 6V

Slide3

Series Circuit

We can rearrange the circuit as shown on the right

Slide4

Series Circuit

And then simplify it once more

Slide5

Series Circuit

=

Slide6

Voltage Divider

It doesn’t matter the amount of resistance, if they are equal they use the same voltageThe voltage at A in this case is still 6V

Slide7

Voltage Divider

By adjusting the ratio of the resistors, we change how much voltage each one “uses up”The resistance at A is significantly higher now since the second resistor will need much more voltage

Slide8

Voltage Divider

The resistance at A will now be significantly lower since the first resistor will use up most of the voltageBy altering the ratio of resistors we can alter the voltage at A

Slide9

Voltage Divider

Suppose we replace the top resistor with a sensor that can change resistanceIn this case a light sensor, photoresistor, that operates from 1k – 10k based on lightBy measuring the voltage at A we can determine the amount of light in the room

Slide10

LAB

Complete the “Sensors in a Circuit” Lab

In Unit 10


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