Lecture 5 Flashcards

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1
Q

in DC biasing, the transistor is purely ____ operation.

A

DC

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2
Q

_______ in transistors are done to establish an operating point (Q point) which variations of current and voltage occur in response to an input signal.

A

DC analysis

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3
Q

It is designed to amplify small ac signals.

A

Small-signal amplifiers

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4
Q

It provides amplification of a signal without any distortion so that the output signal is an exact amplified replica of the input signal.

A

Linear amplifier

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5
Q

The ______ block DC and thus prevent the internal source resistance, RS, and the load resistance, RL, from changing the dc bias voltages at the base and collector.

A

Coupling Capacitors

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6
Q

It ideally appear as shorts to the signal voltage.

A

Capacitors

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7
Q

As the sinusoidal collector current increases, the _____ decreases.

A

Collector voltage

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8
Q

A transistor always produces a ________ between the base voltage and the collector voltage.

A

Phase inversion

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9
Q

The ______ varies along the AC load line, which is different from the DC load line because the capacitors are seen ideally as a short to the AC signal but an open to the DC bias.

A

AC signal

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10
Q

It is a combination of circuit elements, properly chosen, that best approximates the actual behavior of a semiconductor device under specific operating conditions.

A

Model

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11
Q

Out of the three ac transistor modes, the _____ became the more desirable approach.

A

re model

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12
Q

Output current is entering to the system rather than leaving, thus the _______must apply.

A

Negative sign

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13
Q

If Vo has the opposite polarity, a _______ must be apply.

A

Negative sign

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14
Q

It is the impedance “looking into” the system.

A

Zi or Input Impedance

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15
Q

It is the impedance “looking back into” the system.

A

Zo or Output Impedance

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16
Q

It reflects the operation of the BJT at mid-frequencies.

A

re model

17
Q

It is an equivalent network that is used to predict the performance of the transistor amplifier.

A

re model

17
Q

It represents the resistance looking into the emitter terminal of a transistor.

A

re

18
Q

It controls the drain-to-source (channel) current of a JFET

A

gate-to-source voltage

19
Q

It is the current-to-voltage ratio similar to the conductance of a resistor (1/R).

A

Conductance

20
Q

The small signal analysis for D MOSFET and E-MOSFET is same as _____

A

JFET