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 Amplifiers 24 Flashcards |
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What is the basic function of an amplifier? |
Card: 1 / 24 |
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To produce an increased version of its input signal. |
Card: 2 / 24 |
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Riddle: I can amplify a small input signal to a greater output, but I'm not a power amplifier. What am I? |
Card: 3 / 24 |
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Small Signal Amplifier |
Card: 4 / 24 |
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Fill in the blank: The ratio of the output signal to the input signal in an amplifier is known as ______. |
Card: 5 / 24 |
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Gain |
Card: 6 / 24 |
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True or False: A Class A amplifier is the most efficient type of amplifier. |
Card: 7 / 24 |
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False. Class A amplifiers have low efficiency, typically less than 40%. |
Card: 8 / 24 |
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Which of the following amplifier classes has the highest efficiency? A) Class A B) Class B C) Class C D) Class AB |
Card: 9 / 24 |
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C) Class C |
Card: 10 / 24 |
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What type of amplifier is designed to amplify very small signal voltage levels? |
Card: 11 / 24 |
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Small Signal Amplifier |
Card: 12 / 24 |
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Fill in the blank: The gain of an amplifier expressed in decibels is calculated using the formula: ______. |
Card: 13 / 24 |
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20*log(Av) for voltage gain |
Card: 14 / 24 |
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True or False: The power gain of an amplifier can be expressed in decibels using the formula ap = 10*log(Ap). |
Card: 15 / 24 |
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True. |
Card: 16 / 24 |
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What is a key characteristic of a Class B amplifier? |
Card: 17 / 24 |
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It conducts for only half of the input signal waveform. |
Card: 18 / 24 |
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Riddle: I am used to couple two amplifier stages, allowing AC to pass but blocking DC. What am I? |
Card: 19 / 24 |
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Coupling Capacitor |
Card: 20 / 24 |
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Which amplifier class operates with a biasing condition that allows collector current to flow for less than half the input cycle? |
Card: 21 / 24 |
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Class C Power Amplifier |
Card: 22 / 24 |
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Fill in the blank: The efficiency of an amplifier is defined as the ratio of ______. |
Card: 23 / 24 |
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Output power to input power |
Card: 24 / 24 |
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Completed! Keep practicing to master all of them. |
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