ИДЗ 6 англ

Individual Task. LESSON 6. By

Answer the following questions:

1. Which application  of the diode is talked about in the first video?

2. How does the author of the first video call the quality diode to pass the current, if the voltage induced on diode is positive.

3. How does the author of the first video call the quality diode to block the current, if the voltage induced on diode is negative.

4. What current is made by in semiconductor under the influence of warm moving of carriers of charge (c.of.c) and the outer electric field?

5. At least how many diodes are required to make a full-wave rectifier?

6. If to compare half- and full-wave rectifiers’ cycles, how many waves in one cycle we will see on the oscillations of half-wave rectifier?

7. According to the video, write how the author called the voltage-current zone on the IU characteristic of diode which is equal to the breakdown of diode.

8. How is the Zener diode used according to special purpose of semiconductor?

9. What region is reminded in Zener diode video where the mobile charge carriers have been diffused away, or have been forced away by an electric field.

10. What voltage is supposed to be Zener voltage during the second video?

Answers:

1. The diode is used to rectification.

2. The author called it a forward biased.

3. She called it a reverse biased.

4. In the semiconductor the current, that was made by the warm moving of carriers of charge (c.of.c), is called the diffusion current. Also the current, that was made by the outer electric field, is called the drift current.

5. The number of diodes must be at least two.

6. A half-wave rectifier has two waves per cycle, and full-wave rectifiers have only one wave per cycle.

7. The voltage-current zone on the IU characteristic of diode is called breakdown region.

8. It is used for voltage regulation.

9. It’s depletion region.

10. It’s breakdown voltage.