Modulating Carriers

Quick Quiz made from the OCR textbook about modulation.

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  • Created by: Taviline
  • Created on: 04-12-14 21:23
What are the disadvantages of using digital signals to transmit signals?
Slow and limited data transfer
1 of 6
What is AM?
When a high frequency carrier wave has a proportional amplitude voltage dependent on a signal.
2 of 6
What is the purpose of he MOSFET in the chopping circuit?
A switch
3 of 6
What does a diode detector do in demodulation?
Outputs a D.C. voltage that follows the signal peak value.
4 of 6
What does a multiplexer do in FM?
Allows the ramp generator to produce a triangle wave.
5 of 6
How is frequency changed in FM?
The signal voltage determines the ramp generator rate, which controls the schmitt trigger
6 of 6

Other cards in this set

Card 2

Front

What is AM?

Back

When a high frequency carrier wave has a proportional amplitude voltage dependent on a signal.

Card 3

Front

What is the purpose of he MOSFET in the chopping circuit?

Back

Preview of the front of card 3

Card 4

Front

What does a diode detector do in demodulation?

Back

Preview of the front of card 4

Card 5

Front

What does a multiplexer do in FM?

Back

Preview of the front of card 5
View more cards

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