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thisnot
Joined: 06 Oct 2004
Posts: 16
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 28 Oct 2004 6:27 output stages |
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| what is power efficiency for class A and class B models? which is more efficient and used more in industry?
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borodenkov
Joined: 02 Mar 2004
Posts: 129
Helped: 11
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| 28 Oct 2004 6:34 output stages |
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it depeds on your requirements to the linearity..
Class B is more power efficient, but less linear
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sunking
Joined: 25 May 2004
Posts: 914
Helped: 46
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| 28 Oct 2004 6:35 Re: output stages |
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class a: 25%(max)
class b: 50%(max)
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Colbhaidh
Joined: 10 Aug 2004
Posts: 151
Helped: 16
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| 28 Oct 2004 8:50 Re: output stages |
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| Note that Class D with efficiency in the 90's is becoming (rapidly) the industry favourite. On a 0.35um high voltage IC platform, the size of 1000W 6 channel amplifiers is astounding.
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hrkhari
Joined: 04 Mar 2004
Posts: 225
Helped: 3
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| 29 Oct 2004 7:02 Re: output stages |
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The selection between various class of Amplifiers is highly dependant on the modulation scheme requirement, as an example QPSK modulation modulation does not require highly linear Amplifier hence could be implemented in a higher efficiency topology. Hope this helps
Rgds
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