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2. Derived the formula of output signal to get the equation of Noise?Current gain In the same way, when power gain is calculated using current instead of power, making the substitution , the formula is:

2. Derived the formula of output signal to get the equation of Noise?Current gain In the same way, when power gain is calculated using current instead of power, making the substitution , the formula is:

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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2. Derived the formula of output signal to get the equation of Noise?Current gain In the same way, when power gain is calculated using current instead of power, making the substitution , the formula is: 3. In many cases, the input and output impedances are equal, so the above equation can be simplified to: 4. This simplified formula is used to calculate a current gain in decibels and is equivalent to the power gain only if the impedances at input and output are equal. 5. The "current gain" of a bipolar transistor, or , is normally given as a dimensionless number, the ratio of to (or slope of the -versus- graph, for ). An amplifier has an input impedance of 50 ohms and drives a load of 50 ohms. When its input () is 1 volt, its output () is 10 volts. What is its voltage and power gain? 8. Voltage gain is simply? 9. The units V/V are optional but make it clear that this figure is a voltage gain and not a power gain. Using the expression for power, P = V:/R, the power gain is? 10. The units W/W are optional. Power gain is more usually expressed in decibels, thus: A gain of factor 1 (equivalent to 0 dB) where both input and output are at the same voltage level and impedance is also known as what? 7.
Transcribed Image Text:2. Derived the formula of output signal to get the equation of Noise?Current gain In the same way, when power gain is calculated using current instead of power, making the substitution , the formula is: 3. In many cases, the input and output impedances are equal, so the above equation can be simplified to: 4. This simplified formula is used to calculate a current gain in decibels and is equivalent to the power gain only if the impedances at input and output are equal. 5. The "current gain" of a bipolar transistor, or , is normally given as a dimensionless number, the ratio of to (or slope of the -versus- graph, for ). An amplifier has an input impedance of 50 ohms and drives a load of 50 ohms. When its input () is 1 volt, its output () is 10 volts. What is its voltage and power gain? 8. Voltage gain is simply? 9. The units V/V are optional but make it clear that this figure is a voltage gain and not a power gain. Using the expression for power, P = V:/R, the power gain is? 10. The units W/W are optional. Power gain is more usually expressed in decibels, thus: A gain of factor 1 (equivalent to 0 dB) where both input and output are at the same voltage level and impedance is also known as what? 7.
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