Circuit Devices Flashcards
1
Q
What is LDR short for
A
Light dependant resistor
2
Q
What happens to a LDR as the light is brighter and darker
A
Resistance falls
The resistance is higher
3
Q
What can resistance depend on
A
Light intensity
4
Q
Give example of LDR
A
Automatic night lights
Outdoor lighting
Burglar detectors
5
Q
What is a thermistor dependent on
A
Temperature
6
Q
What’s happens to the Thermidor as it becomes hotter or cooler
A
The resistance drops
The resistance goes up
7
Q
Give examples of thermistors (temp detectors)
A
Car engine temperature sensors
Electronic thermostat
8
Q
What are sensing circuits used for
A
Used to turn on or increase the power to components depending on the conditions
