Electronic Devices - Semiconductors - Discussion
Discussion Forum : Semiconductors - General Questions (Q.No. 3)
3.
Under normal conditions a diode conducts current when it is
Discussion:
13 comments Page 1 of 2.
Lavanya said:
1 decade ago
A diode conducts when it is forward-biased, and the anode is connected through a limiting resistor.
Farhan Patel said:
1 decade ago
Forward bias means anode of the diode is connected to the positive terminal and cathode of the diode is connected to the negative terminal, as a result of which more electrons are supplied 4m the negative terminal (i.e. 4m cathode to anode) and are attracted by the +ve terminal of the battery....this leads to the flow of current from anode to cathode and hence diode conducts.
Neelaji said:
1 decade ago
In forward bias, the electrons attracted by the positive terminal and holes are attracted by negative terminal so conductivity more as compared to reverse bias.
Mohana ragadeepthi said:
1 decade ago
Normal working condition of diode is nothing but the forward bias condition and the diode conducts in forward bias condition.
Suganya said:
1 decade ago
Because, during forward bias diode will act as a short circuit line. So that it can conduct current but in one direction. In reverse bias diode takes open circuit. There is no conduction of current.
Sowjanya said:
1 decade ago
Electrons are attracted by the positive terminal &holes are attracted by negative terminal so conductivity is more in forward bias.
Ragavan said:
1 decade ago
What happens in Avalanched and saturated condition could anyone tell me ?
Venu kumar said:
1 decade ago
If we see the internal connection of the diode there will be a resistor in forward direction it will be less so it will conducts that means short and in case of reverse bias there will be infinite resistance so it does not conduct that means open.
HARSHIL SHAH said:
1 decade ago
What means Avalanched and saturated conditions?
Neha said:
1 decade ago
In avalanche condition, the electron has to overcome the potential barrier between bands to start conduct, that means more minority carriers are required to overcome this energy gap.
In saturated conditions, even on increasing the conduction electrons (increasing applied voltage) it remains constant. It doesn't increase.
So, there are some limiting values for the flow of current unlike forward bias condition.
In saturated conditions, even on increasing the conduction electrons (increasing applied voltage) it remains constant. It doesn't increase.
So, there are some limiting values for the flow of current unlike forward bias condition.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers