answersLogoWhite

0


Best Answer

The power gain of an amplifier having an input of 20W and an output of 20mW is 0.001. Expressed in decibels, that is a gain of -30db. (log2 0.001 * 3)

If you meant an output power of 20MW (mega instead of milli), the gain is 1,000,000, or +60db.

User Avatar

Wiki User

14y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What is power gain of an amplifier having input gain 20watt and output of 20mwatt is?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

Power gain of an amplifier having input gain of 20W and what is the output gain of 20mW?

The power gain of an amplifier having an input of 20W and an output of 20mW is 0.001. Expressed in decibels, that is a gain of -30db. (log2 0.001 * 3)If you meant an output power of 20MW (mega instead of milli), the gain is 1,000,000, or +60db.


How is slew rate affect on amplifier?

as it is rate of change of output voltage..so it affect amplifier output


What is the cause of amplifier having garbled sound.?

It may not be the amplifier at all ... it could be that the speaker cone is torn. If it is the amplifier it would mean that some component in the audio output section is faulty and needs repair or replacement.


Why you need operational transconductance amplifier?

Usually output of an amplifier is a voltage ,...but in case of Operational Transconductance Amplifier ,Iout (current ) is the output. This feature, makes it useful for Electronic control of amplifier gain .


What gauge speaker wire for car amplifier install?

Depends on the output of the amplifier.


What is meant by double tuned amplifier?

An amplifier with tuned filters on both input and output.


What is non inverting amplifier?

The amplifier whose output is inphase with it input means if we consider voltage amplification then there is zero phase shift in input and output


Yes this amplifier is a mono amp so it is internally bridged. It does not have a stereo output. ?

Yes this amplifier is a mono amp so it is internally bridged. It does not have a stereo output.


Why does amplifier gain reduce?

Since we know that the amplifier gain is given by A=Output voltage/input voltage (where A is the amplifier gain) So, it can be written as output voltage=A*input voltage, so when the output part increases gain increases but when input part increases gain decreases


What is the output signal of a common base amplifier?

3Db


Are amplifiers input or output devices?

An amplifier is both an input and output device. An amplifier, as its name suggests, amplifies a signal, meaning that it makes it stronger. An amplifier takes something as input, like maybe a sound signal, and its output is a more powerful (or louder) version of the same signal.


Derive the output equation for differential amplifier and instrumentation amplifier?

Vo=(R2/R1)(V2-V1)