Answer / punithajosephine

when we give forward bias, pn junction conducts the
currentfrom -ve to +ve.at reverse bias, it doesn't work.

Answer / arjun_r

When a P-type material and an N-type material are put together, The electrons from N side go to P side and holes from P side go to N side forming a depletion region at the junction. This junction develops a voltage which is dependent on the doping concentration. Now, the free electrons on N-Side require more energy to cross the depletion region. A +Ve voltage applied across the diode(Also called forward bias) can supply this energy.
When a -Ve voltage is applied, it will result in free carriers being pulled away from the depletion region thereby increasing its width. Hence, it will allow the current to pass only in one direction(i.e. when a +ve voltage is applied).

Explain various adders and diff between them?

1 Answers   Intel,

---

What is the depletion region?

1 Answers  

---

Draw Vds-Ids curve for a MOSFET. Now, show how this curve changes considering Channel Length Modulation.

0 Answers   Infosys,

---

Explain how MOSFET works?

0 Answers  

---

Process technology? What package was used and how did you model the package/system? What parasitic effects were considered?

0 Answers   Intel,

---

Why do we need both PMOS and NMOS transistors to implement a pass gate?

3 Answers   INEL, Intel,

---

Given a layout, draw its transistor level circuit. (I was given a 3 input AND gate and a 2 input Multiplexer. You can expect any simple 2 or 3 input gates)

0 Answers   Infosys,

---

What are the different design techniques required to create a layout for digital circuits?

0 Answers  

---

Give the various techniques you know to minimize power consumption?

5 Answers  

---

Why is OOPS called OOPS? (C++)

1 Answers   ARM, Intel,

---

Why don?t we use just one NMOS or PMOS transistor as a transmission gate?

2 Answers   Infosys,

---

How do you size NMOS and PMOS transistors to increase the threshold voltage?

0 Answers   Infosys,

---