Electronic Devices - Semiconductors - Discussion
Discussion Forum : Semiconductors - General Questions (Q.No. 22)
22.
As the forward current through a silicon diode increases, the voltage across the diode
Discussion:
13 comments Page 1 of 2.
John said:
6 years ago
Hi all.
C is correct, it implies that it's not increasing when the voltage is from 0-0.7V.
A is more specific than " relatively constant"
C is correct, it implies that it's not increasing when the voltage is from 0-0.7V.
A is more specific than " relatively constant"
Akshay said:
7 years ago
@All.
Just see the characteristics of the diode. The curve becomes almost vertical after the knee voltage.
Just see the characteristics of the diode. The curve becomes almost vertical after the knee voltage.
Maark said:
7 years ago
Why not option A?
Vikas said:
8 years ago
Please explain it clearly.
Jonathan said:
9 years ago
How? I am not getting this.
Please explain me in detail.
Please explain me in detail.
Peyush said:
1 decade ago
Diode current, Id = Is e^(Vd/Vt)
or, diode voltage, Vd = Vt ln(Id/Is)
with increase in Id, voltage Vd increases but at a very lesser rate as compared to Id. Hence we can say that the voltage is relatively constant.
or, diode voltage, Vd = Vt ln(Id/Is)
with increase in Id, voltage Vd increases but at a very lesser rate as compared to Id. Hence we can say that the voltage is relatively constant.
Priya said:
1 decade ago
@Girish
why that voltage across the diode remains constant?
why that voltage across the diode remains constant?
Rupam said:
1 decade ago
A/C to me voltage is always directly proportional to the current so that as we increase the voltage applied the current increases.
Girish Kumar said:
1 decade ago
We can explain it with the help of forward bias characteristics of diode that when a forward voltage reached a constant value as 0.3 and 0.7 then a large current flow in diode but voltage across diode will remain constant.
(1)
Piyush said:
1 decade ago
Upto 0.7 volts (x axis) current are relatively zero while applied voltages goes beyond 0.7 volt, current (y axis) going repidly high by very small variation in voltage (say delta v).
Hence the option is C.
Hence the option is C.
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