Photoresistor
A photoresistor, also known as a light-dependent resistor (LDR), is a type of resistor whose resistance decreases with increasing incident light intensity. It is a variable resistor, widely utilized in electronic devices to measure light levels, allowing for the automation of tasks such as adjusting the brightness of displays, outdoor lighting control, and sensor applications. Photoresistors are often made of semiconductor materials, enabling them to effectively detect changes in light levels for a variety of consumer and industrial applications.
Photoresistor meaning with examples
- In a solar garden light, the photoresistor detects the ambient light levels and automatically turns on the LED at dusk. This allows the lights to conserve energy by only operating when needed, contributing to sustainability while providing necessary illumination outdoors.
- A smartphone camera uses a photoresistor to adjust the exposure settings based on the surrounding light conditions. This ensures that images are captured with optimal clarity and brightness, enhancing the photography experience for users in varying lighting situations.
- Home automation systems equipped with photoresistors can intelligently adjust the intensity of indoor lighting based on natural sunlight entering a room. This not only improves comfort but also saves energy and reduces utility costs by maintaining optimal lighting levels throughout the day.
- In scientific experiments, researchers often deploy photoresistors in light sensors to accurately measure the intensity of light in their experiments. This helps in understanding the effects of light on various materials and biological organisms, paving the way for advancements in multiple scientific fields.
Photoresistor Synonyms
ambient light detector
ambient light sensor
cadmium sulfide cell
illuminance sensor
illumination sensor
ldr
light sensor
light-dependent resistor
light-responsive device
light-responsive resistor
optical resistor
optical sensor
photo detector
photoconductive cell
photoelectric resistor
photonic resistor
photo-sensitive device
photo-sensitive resistor
solar sensor
variable resistor
Photoresistor Antonyms
constant resistor
dark resistor
dark-insensitive device
fixed resistor
insulator
invariant resistance
light-ignoring resistor
light-impervious material
light-insensitive device
light-opaque substance
light-shielding material
non-conductive material
non-light responsive device
non-reactive resistor
non-variable resistor
resistance amplifier
static conductor
static resistor
steady-state resistor
unresponsive resistor