Circuit Devices

Light dependent resistor

LDR is short for________

falls

In bright light the resistance___

is highest

In darkness the resistance__

automatic night lights, outdoor lighting and burglar detectors

They have applications including__________

resistor that is dependent on the intensity of light

LDR is a_______

depends on temperature

The resistance of a thermistor________

temperature dependent resistor

A thermistor is a______

drops

In hot conditions the resistance_____

goes up

In cool conditions the resistance____

temperature detectors, temperature sensors and electronic thermostats

Thermistors are useful _______

Sensory circuits

_________can be used to increase the power to components depending on conditions