what is the difference between a photo diode and photo transistor????????
i have read about them but could'nt figured it how we would come to know to either use photo diode or go for photo transistor?????????
are there any hard and fast rules or it only depends upon the designer of the circuit to choose any one of them to fulfill his or her purpose????
how we would be able to justify that the choice made by us to use photo diode or photo transistor is a good one or a bad one????????
i have read about them but could'nt figured it how we would come to know to either use photo diode or go for photo transistor?????????
are there any hard and fast rules or it only depends upon the designer of the circuit to choose any one of them to fulfill his or her purpose????
how we would be able to justify that the choice made by us to use photo diode or photo transistor is a good one or a bad one????????