Because, if we increase the intensity of light the value of reverse current are also increase and same as if we decrease the intensity of light the reverse current are also decrease.
Shape of photo diode:-
There are different shape and design are avail in market of photo diode. But the very important and useful diode are explain below. This package of diode are have two containing legs which is known as cathode and anode. A small window are contain in the body of photo diode. The mostly photo diode body are made metal cause. The pn junction are instead insulator and cover sealed in metal case. A small glass window are instead top of the case. This window are used to instead a intensity of light in diode pn-junction.
Uses of photo diode:-
There are many uses of photo diode in our daily life work. So we say that this type of diode is very important part of our work and life. We just study two important usages of photo diode.
By using counting in machines:-
The photo diode are used to count items which are carry forward on conveyor belt.
The Second part of photo diode will be end. The third and last part of this photo diode is coming soon.....