22.1.6 - Input to Output Signal Relationship
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Practice Questions
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What is a voltage amplifier and its primary function?
💡 Hint: Think about what amplifiers do.
How does adding a load to an amplifier affect its output?
💡 Hint: Consider the implications of voltage division.
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Interactive Quizzes
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What is the role of a voltage amplifier?
💡 Hint: Consider the purpose of electronic amplifiers.
True or False: The loading effect always increases the output voltage.
💡 Hint: Think about how your circuit is influenced by adding loads.
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Challenge Problems
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You have a voltage amplifier where the input voltage is 2V, and the gain is 15. Calculate the output voltage. Then, if you add a load of 500Ω at the output and the amplifier has an output resistance of 100Ω, determine how this affects the output voltage observed on the load.
💡 Hint: Assume the load takes away a portion of the voltage; use the voltage divider rule.
If the input resistance of the amplifier is 1000Ω and the source resistance is 200Ω, what is the effective input voltage supplied to the amplifier?
💡 Hint: Remember how resistances in series in the input divide the voltage.
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