As nouns the difference between phototube and photoresistor
is that phototube is a gas-filled electron tube that has a photosensitive cathode while photoresistor is an electronic component whose resistance is inversely proportional to the intensity of incident light; a photoconductor.
photoresistor
Noun
(
en noun)
An electronic component whose resistance is inversely proportional to the intensity of incident light; a photoconductor
Related terms
* photodiode
* varistor
* thermistor
* resistor