electronic-devices-bjt-amplifiers Related Question Answers

76. The ________ model(s) is (are) commonly used in the small-signal ac analysis of transistor networks.





77. In a voltage-divider bias configuration, there can be a measurable difference in the results for ________ if the condition ro 10RC is not satisfied.





78. The level of re is determined by ________.




79. The ________ the source resistance, the ________ the overall gain of an amplifier.





80. In a common-base configuration, the input and output voltages are ________ and the output and input currents are ________.





81. Ideally, the changes in the load resistor or the source resistor should have ________ effect on all the parameters of the two-port model.





82. The ac voltage gain of a Darlington connection is about ________.





83. One junction of an operating transistor is ________ and the other one is ________.





84. The output voltage and the input voltage are ________ for the common-base configuration.





85. A common-base configuration has ________ impedance at the input and ________ impedance at the output.





86. In a common-emitter configuration ________ is the controlling current while ________ is the controlled current.





87. For the common-emitter and common-base configurations, the magnitude of ________ and ________ is often not included in the model.





88. An emitter-follower has ________ impedance at the input and ________ impedance at the output.





89. ________ refers to the forward transfer current ratio.





90. For transistor amplifiers, the no-load voltage gain is ________ the loaded voltage gain.





91. The peak value of the ac input signal is controlled by the ________ in a transistor network for the frequencies in the low to midrange.





92. In an emitter-follower, the output voltage is ________ with the input voltage.





93. ________ can be applied to determine the response of the ac equivalent circuit.




94. The bypass capacitor in a common-emitter configuration ________ the voltage gain.





95. The loaded voltage gain of an amplifier is ________ the no-load level.





96. The common-emitter configuration has a ________ level of input impedance with a ________ voltage and current gain.





97. For a common-base configuration, the input impedance is relatively ________ and the output impedance quite ________.





98. The output voltage and the input voltage are ________ for the common-emitter configuration.





99. AC current ratios ac and ac convert directly from h parameters.



100. Besides the fact that DC = IC/IB and ac = IC/IB, these quantities are always the same for purposes of small-signal amplification.



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