Amplifier Electronic Components

Question 1

What does a transformer do?

Answer 1

Changes an AC input voltage to a different AC output Voltage

Question 2

What is a Balun?

Answer 2

A special type of transformer that transforms a balanced impedance to an unbalanced one

Question 3

What is the function of the power supply in a Amplifier?

Answer 3

Converts AC power into DC for powering (biasing) Transistors

Question 4

What does a Fuse do?

Answer 4

Protects sensitive components by breaking the connection if the current is too High.

Question 5

What is the purpose of a Filter?

Answer 5

Eliminates unwanted frequencies, or as is very common in cable networks, filters separate the upstream and downstream frequencies for amplification the outside plant

Question 6

What is the purpose of a Pad?

Answer 6

It is a resistor that reduces (attenuate) the output signal when needed.

Question 7

What is an Equalizer? (not Denzel Washington and/or Queen Letifa)?

Answer 7

Passive devices that attenuate some frequencies more than others for tilt compensation

Question 8

What is a Diode?

Answer 8

A semiconductor device that blocks negative voltages and can also mix two signals

Question 9

What is another task of a Transformer besides stepping down AC Voltage?

Answer 9

convert the input AC waveform to a regulated, stable DC waveform.

Question 10

What are the 4 types of filters

Answer 10

low pass, high pass, bandpass, and bandreject or notch

Question 11

What does a Low Pass Filter do?

Answer 11

Passes lower frequencies and blocks higher frequencies

Question 12

What does a High Pass Filter do?

Answer 12

Blocks lower frequencies and passes higher frequencies

Question 13

What does a Bandpass Filer do?

Answer 13

Allows small range of frequencies to pass through

Question 14

What does a Bandreject or Notch filer do?

Answer 14

Blocks a small range of frequencies

Question 15

What is a High Q Bandpass Filter.

Answer 15

A Bandpass Filter that has a very Narrow, sharp drop-off

Question 16

The 2 types of semiconductors?

Answer 16

N type or P type

Question 17

If you infuse a semiconductor with dopants that have either extra electrons, what type of semiconductor will you have?

Answer 17

N Type

Question 18

If you infuse a semiconductor with dopants that are missing electrons, what type of semiconductor will you have?

Answer 18

P Type

Question 19

What device is used to store energy and slowly discharge it to a load?

Answer 19

Capacitor

Question 20

In cable RF amplifier compensation circuitry when are op-amps used?

Answer 20

Both when in thermal and auto mode

Question 21

If you create a parallel circuit with a resistor and a capacitor, what kind of filter did you create?

Answer 21

Low Pass Filter