Electronics - Diodes and Applications - Discussion

3. 

What circuit activity may shift a characteristic curve so that diode operating points are different?

[A]. higher power (heat)
[B]. higher resistance
[C]. lower voltage
[D]. lower current

Answer: Option A

Explanation:

No answer description available for this question.

Ksumathi said: (Dec 6, 2010)  
The forweard voltage for the diode shifts due to heat

Jitendra said: (Jan 30, 2012)  
Because of heat the temprature of junction increases i.e reverse saturation current hence total forward current which shifts the q point.

Karthi Ish said: (Jan 30, 2012)  
The diode characteristics differ due to temperature.

Ashis Kumar Patra said: (Apr 20, 2012)  
At a rise of 10 degrees of temperature the reverse saturation current increases a twice. So, due to the increase in current there is a increase in voltage, which results in getting the different Operating Point(i.e Q point).

Ranjith Sundar said: (Aug 16, 2012)  
Even diode is a nonlinear device it has a voltage range of 0.5-0.7volt. This can be varied by means of high temperature.

Rakesh Mahadev said: (Oct 1, 2012)  
The semiconductor devices has negetive temp. Coefficient.

Alok Kumar said: (Oct 9, 2012)  
The semiconductor such silicon, germanium NTC (Negative Temperature Coefficient).

Rajasekhar said: (Oct 4, 2013)  
The total value of collector current is given by collector current+reverse saturation current. For every 10 degree raise in temp the reverse saturation current doubles thereby increasing the collector current. As the collector current increases the diode operating point shifts towards breakdown region which in turn increases the temperature and continuing the above process (early effect).

Jitendra Prajapat(Setg) said: (Sep 6, 2014)  
We know that semiconductor has a negative temperature coefficient characteristics So, due to the increase in temperature there is a increase in current, which results in getting the different Operating Point (i.e Q point).

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