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10. Find the answers to these questions.

1. What do we call the two types of diagrams shown in the text?

2. What do we call the approach to electronics which focuses on the function of units?

11. This table provides the terms you need.

Prefix

Symbol

Multiple

Example

giga

mega

kilo

deci

milli

micro

nano

pico

G

M

k

d

m

µ

n

p

109

106

103

10-1

10-3

10-6

10-9

10-12

GHz

kV

dB

mW

µH

nF

pF

gigahertz

megohms

kilovolts

decibels

milliwatts

mirohenries

nanofarads

picofarads

12. Look at the table above and say the value.

8 µF

150 km

9 MHz

5 mm

51pF

90 kN

450 GHz

50 mg

20 dm

5200 kg

30 MW

9 mN

354 nm

16 GHz

72 MW

13. Look at the circuit symbols and their components. Translate them.

A – aerial

E – earth

LS – loudspeaker

R – resistor

C – capacitor

IC – op amp

P – potentiometer

+5V, -5V, 0V –

D – diode

L – inductor

Q – transistor

supply rail

14. Look again at Fig. 2 and describe the following values like this:

R1 – a two-hundred-and-twenty-kilohm resistor

C2 – a hundred-picofarad (puff) capacitor

R2, R3, C1, C3, P1, L1.

Language study. Describing block diagram and circuits

Look again at Fig. 1 above. We can describe it like this:

The radio

consists of

a tuner, a detector, and an AF amplifier.

is composed of

Using comprise, we can start our description with the blocks:

A tuner, a detector, and an AF amplifier

comprise

the radio.

We can describe the links between each building block using these expressions:

The tuner

is connected to

the detector.

is linked to

15. Now look at the basic units of the circuit and translate the text into Russian.

The volume control consists of a ten-microfarad electrolytic capacitor connected in series with a five-kilohm potentiometer (pot). The positive terminal of the capacitor is connected to the output of the AF amplifier and the wiper of the pot is connected to the power amp. The third terminal of the pot is connected to the zero voltage supply rail.

16. Fill in the gaps in this description of the tuned circuit shown in Fig. 2. Each gap represents one word. Use the words from the box.

capacitor

consists

microhenry

supply

connected

diode

picofarads (puffs)

variable

The circuit (1) __________ of a four hundred and seventy (2) __________ inductor which is connected in parallel with a (3) __________ capacitor. The (4) __________ can be varied between five and sixty-five (5) __________. The aerial is (6) __________ to the top end of the tuner. It is also connected to the positive terminal of the (7) __________ in the detector. The bottom end of the tuner is connected to earth via the zero voltage (8) __________ rail.