In a photo-diode when light is incident, the fractional increase in the majority carriers is much less than the fractional increase in the minority carriers. Consequently, the fractional change due to the photo-effects on the minority carrier dominated reverse bias current is more easily measurable than the fractional change due to the photo-effects on the majority carrier dominated forward bias current. Hence, photo-diodes are preferred to be used in the reverse bias condition to easily observe the variation of current with intensity.
In a photo-diode when light is incident, the fractional increase in the majority carriers is much less than the fractional increase in the minority carriers. Consequently, the fractional change due to the photo-effects on the minority carrier dominated reverse bias current is more easily measurable than the fractional change due to the photo-effects on the majority carrier dominated forward bias current. Hence, photo-diodes are preferred to be used in the reverse bias condition to easily observe the variation of current with intensity.
A nonconducting diode is biased in the reversed direction (reverse polarization).
because reverse biased current is constant upto avalanche breakdown.
If you mean JFET, it is because the gate junction is reverse biased.
Zero current flow when reverse biased, zero voltage drop when forward biased.
It will be reverse biased and will not light.
It is basically a photodiode with no reverse biased voltage is applied to it . it generates the potensial across it when exposed to light
A light-emitting diode (LED) emits light when an electric current passes through it. A photodiode, on the other hand, generates an electric current when exposed to light. In summary, an LED produces light, while a photodiode detects light.
the function of a photodiode is produce some reverse current in the external resistor of circuit.
reverse biased
A nonconducting diode is biased in the reversed direction (reverse polarization).
because semiconductor diodes are not perfect insulators when reverse biased. if you want a diode that is a perfect insulator when reverse biased, use a vacuum tube diode.
because reverse biased current is constant upto avalanche breakdown.
Because when reverse biased it behaves like any other rectifier/diode.
collector junction is reverse biased so as to remove the charge carriers away from its junction with the base.
If you mean JFET, it is because the gate junction is reverse biased.
the diode when forward biased will conduct and during reverse biased condition(generally doring reverse biased condition ckt is open mens no current flows;when register is connected)current flows but during reverse biased condition 1--for sometimes initially current flows due to discharging of capacitor. 2--then ckt will be having no current
Because if you forward-biased them they would always conduct, even in total darkness.