Circuit devices
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6 Terms
1
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What is an LDR?
Dependent on light intensity. In bright light the resistance falls and at night the resistance is higher.
(remember symbol)
2
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Uses of LDR’s?
Outdoor night lights, burglar detectors.
3
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What does the graph look like for an LDR for resistance and light intensity?
look it up.
4
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What is a thermistor?
(remember symbol)
A temperature dependent resistor. If it is hot, then the resistance is less. If it is cold, the resistance increases.
5
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Uses of thermistors
Temperature detectors
6
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Graph for a thermistor for resistance and light intensity.
(look it up)
Note 
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