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)
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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.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F09e87719-f9b0-4c12-b5e6-5815429db34c%2Fd016f623-9507-4ffa-a44a-2c0ee28dfc7e%2Fgpmklsg_processed.jpeg&w=3840&q=75)
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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