Week 7

Question 1

Passive components cannot provide

Answer 1

energy into a network

Question 2

Active components can provide

Answer 2

energy into a network

Question 3

Passive components

Answer 3

Resistors, capacitors, and inductors

Question 4

Active components

Answer 4

Voltage, current sources, and transistor amplifiers

Question 5

What happens when the input impedance of the amplifier is infinite?

Answer 5

Input voltage, 𝑣in, be equal to the source voltage, 𝑣s.

Question 6

For maximum
voltage
transfer to the amplifier
(SIL) or (ICF):

Answer 6

• 𝑅in should be as high as possible

– 𝑅in ≫ 𝑅s

Question 7

At the output stage of the amplifier what is there that will influence the magnitude of the output
signal transferred to the load?

Answer 7

Output

impedance

Question 8

Maximum
voltage
transfer to the load
(OCF) or (LIL):

Answer 8

– 𝑅out should be as low as possible

– 𝑅out ≪ 𝑅s

Question 9

For maximum
current
transfer to a current amplifier
(ICF) or (SIL):

Answer 9

– 𝑅in should be as low as possible

– 𝑅in ≪ 𝑅s

Question 10

Ideal characteristics

Voltage amplifier:

Answer 10

High input impedance

Low output impedance

Question 11

Ideal characteristics

Current amplifier:

Answer 11

Low input impedance

High output impedance