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Four classes of amplifier operations
Classes A, AB, B, and C
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Class ___ amplifiers are biased so that variations in input signal polarities occur within the limits of CUTOFF and SATURATION.
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Amplifiers designed for class ___ operation are biased so that collector current is zero (cutoff) for a portion of one alternation of the input signal
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Amplifiers biased so that collector current is cut off during one-half of the input signal are classified class __.
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In class ___ operation, collector current flows for less than one half cycle of the input signal
C
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_____ is the faithful reproduction of a signal.
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The ________ of an amplifier refers to the ratio of output-signal power compared to the total input power.
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___________ is the most frequently used configuration in practical amplifier circuits, since it provides good voltage, current, and power gain.
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COMMON-EMITTER CONFIGURATION (CE)
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______________ is mainly used for impedance matching, since it has a low input resistance and a high output resistance. It also has a current gain of less than 1.
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COMMON-BASE CONFIGURATION (CB)
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The ___________ is used as a current driver for impedance matching and is particularly useful in switching circuits.
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COMMON-COLLECTOR CONFIGURATION (CC)
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The voltage at which the sudden increase in current occurs is called the __________
BREAKDOWN VOLTAGE
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The life expectancy of the LED is very long, over _______ hours of operation.
100,000
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Transistors are semiconductor devices with _______ or more terminals.
three
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A second type of field-effect transistor has been introduced in recent years that has some advantages over the JFET. This device is the ___________________.
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metal oxide semiconductor field effect transistor (MOSFET)
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