2.7.6 Translate the word-combinations

transmission lines, current path, current source, additional charge carriers, filamentary transistor, point-contact transistor, boundary layer, metallic point contact, carrier concentration, current cross section, majority carriers, minority carriers, such a modification.

7. Answer the questions

1. What is the transistor inended for? 2. What may we refer to in the discussion of its mechanism? 3. What happens to a switch when a weak current arrives over a long transmission line? 4. What varies the conductivity in a current path of a local current source? 5. How do the various types of transistor s differ? 6. When have we the filamentary transistors? 7. What happens if the affected current path is a p-n junction? 8. How does the unipolar transistor operate? 9. How is this type of transistor restricted in contrast to the other types?

7. Form nouns from the following verbs

amplify, conduct, apply, vary, inject, intensify, transmit, restrict, occur.

7. Translate the conditional sentences, define their types. Translate provided as a conjunction

1. Provided we got the necessary devices we should check this apparatus. 2. A cell supplies electric energy provided its electrodes are of different materials.

7. Translate the sentences, mind the functions of the infinitive

   1. The device to be used here is intended for the amplification of electrical signals.

   2. One can use a switch to start or to block the strong current from a local source. 3. The most modern equipment to be used at this station is the most up to date. 4. One can see that these types of machines to be described here differ slightly from previous ones.

2.8 Part 8

1. Remember pronunciation of the following words

distinguishable, intrinsic, contribute, mutually, sign, excess, analogous, reciprocal, extrinsic, consumption.

2. Read the words, pay attention to stress shift

apply — application; active — activity; limit — limitation; particle — particularly.

2.8.3 Find Russian equivalents to the English words

free electrons conduction by holes intrinsic

mutually opposed particle flow hole current

extrinsic semiconductors excess electrons

three terminal reciprocal

devices power consumption

дырочный ток потребление энергии примесные полуповодники избыточные электроны дырочная проводимость свободные электроны трехэлектронные приборы

необратимого действия взаимно противоположные

потоки частиц чистый, беспримесный

4. Find synonyms, translate them

common a, methods n, differ v, as far back as, apply v, nowadays adv, occur v, put into service, limit n, ordinary a, conventional a, for the time being, vary v, as early as, employ v, put into operation, take place v, techniques n, dimension n, size n, boundary n.

4. Find antonyms, translate them

distinguished a, on the other hand, charge v, disconnect v, intrinsic a, unlike adv, conductor n, lower a, upper a, indirectly adv, directly adv, undistinguished a, increase v, extrinsic a, up adv, insulator n, connect v, down adv, like adv, decrease v, on the one hand,discharge v.