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26th October 2009, 04:04 AM
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#5351 |
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Formerly Thanh1973
Join Date: Nov 2006
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35V vs 40V @ 2.2A
Top is 35V rails
Bottom is 40V rails Bias 2.2A Probably a good compromise.
__________________
"No, this sucker's electrical, but I need a nuclear reaction to generate the 1.21 gigawatts of electricity I need." |
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26th October 2009, 05:03 AM
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#5353 |
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Formerly Thanh1973
Join Date: Nov 2006
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Maybe hold off here, Nelson or someone else might have some more ideas about this one.
There is another benefit here, it looks like the cascoded version has about another 20dB improvement in PSRR
__________________
"No, this sucker's electrical, but I need a nuclear reaction to generate the 1.21 gigawatts of electricity I need." |
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26th October 2009, 05:41 AM
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#5354 |
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Formerly Thanh1973
Join Date: Nov 2006
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The other alternative is, if you don't exceed 30V rails then you won't need cascode operation.
You will also be able to bias higher.
__________________
"No, this sucker's electrical, but I need a nuclear reaction to generate the 1.21 gigawatts of electricity I need." |
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26th October 2009, 07:54 PM
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#5357 |
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Formerly Thanh1973
Join Date: Nov 2006
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Yes 32V is fine, you could probably also go to 35 Volts without issues.
But it is good to allow some safety margin.
__________________
"No, this sucker's electrical, but I need a nuclear reaction to generate the 1.21 gigawatts of electricity I need." |
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27th October 2009, 01:29 AM
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#5359 |
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Formerly Thanh1973
Join Date: Nov 2006
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So is that 4 output pairs I see.
Will the supply be in a sepparate case?
__________________
"No, this sucker's electrical, but I need a nuclear reaction to generate the 1.21 gigawatts of electricity I need." |
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27th October 2009, 01:40 AM
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#5360 |
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diyAudio Moderator
Join Date: Nov 2005
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4 output pairs, yes
But I might go up to 6 pairs Supply is on the picture Just the trafo is in an integrated wooden base below heatsinks Supply caps and bridge(double) above trafo NPN and PNP outputs on each side on their own respective heatsink Its a mono amp you see Caps etc is in a inside box to shield from heat I expect it to give very effective convection cooling on inner side of heatsink The hot air that goes upwards along inner side will enhance airflow on the outside as well Last edited by tinitus; 27th October 2009 at 01:55 AM. |
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| Dennis Hui, Bksabath |
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