Summing amplifier configuration (AQA A-Level Physics): Quizzes
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Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is the main function of a summing amplifier?
What is the main function of a summing amplifier?
Amplify multiple inputs independently
In which type of audio equipment are summing amplifiers commonly used?
In which type of audio equipment are summing amplifiers commonly used?
Audio mixers
What feature of an inverting amplifier allows input signals to not affect each other?
What feature of an inverting amplifier allows input signals to not affect each other?
Virtual earth
What does the negative sign in the summing amplifier formula indicate?
What does the negative sign in the summing amplifier formula indicate?
Output voltage is inverted
In the summing amplifier, what determines the scaling factor for each input?
In the summing amplifier, what determines the scaling factor for each input?
The resistors
What is the primary purpose of a difference amplifier?
What is the primary purpose of a difference amplifier?
Find difference between two inputs
What application commonly uses difference amplifiers for noise cancellation?
What application commonly uses difference amplifiers for noise cancellation?
Balanced microphones
What frequency of interference can ECG sensors pick up?
What frequency of interference can ECG sensors pick up?
50 Hz
When resistors in a difference amplifier are equal, what is ensured?
When resistors in a difference amplifier are equal, what is ensured?
Both inputs are weighted equally
What type of feedback is created by resistor in a summing amplifier?
What type of feedback is created by resistor in a summing amplifier?
Negative feedback