Can anyone actually explain to me how this mathematics question was does as I had it in an engineering test but couldn't do it:
The power gain of an amplifier relates input power, Pi, to output power, Po, by;
Power gain= 10log(small 10) Po/Pi decibles (dB)
a) As part of the assesment of a new system you have been asked to find the power gain when Po=15W and Pi=300mW
B) you also have to find out what the output power will be if input power is 400mW and the power gain is 20dB.
Please may someone explain this to me step by step as it completely mindblows me, thanks to anyone who can help me it will be much appreciated.
Thanks everyone :)
2006-10-11
04:09:07
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2 answers
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asked by
louie_ellis
1
in
Mathematics