Zvláštne, môj včerajší príspevok niekde zmizol. Asi som ho zle odoslal, tak skúsim ešte raz.
Kopírujem z diyaudia pripomienky ku konštrukcii.
"often pcb designers have a fiction or a vice with symmetrics and size ( including me ) ....playing this game might end up with an ultra compact and symmetric pcb but that comes with a a couple of troubles
one : that no one can use a bigger semi for the output if exist or if needed
two: keeping so many output semis so close to each other means that the heatsink has to be made of zorex, kryptonex, starson or any other material from the moon or jupiter to be able to absorve this type of heat ... "
"Federmann
Has anyone ever built this layout and effectively cooled it?
I am strugging to envisage an efficient heatsink layout to suit.
Maybe a re-design is required to the layout of the output mosfets to suit the real world.
For a working example, look at Quasi's designs which are documented on his website
Quasi's DIY Audio Site"
"10 pair of IRFP mosfets driven by the VAS directly?!"
"Not even 2 pairs should be driven directly from the vas"
"I will be interested t see how this module turns out...
I think you are being very very VERY optimistic with your cooling requirements. THIS MODULE WILL REQUIRE FORCED COOLING! Unless of course you intend using a piece of aluminium the size of a football field... "
"I am in doubt if any prototype of this amp exist, 'cause I think this photo is a Photoshop or Corel image done by inserting of CAD image to it. You can strong view it on superscription "M2K" and "Volume A, B".
There is no heavy cooler. And all your scheme is tricksy. I can only pressupose that it will explode by heat caused by performer transistors. "
"I like your soldering iron"
"You need to get realistic here , 1 - 2kw with small heatsinks , cramped layout , and a very simple driverless LPT/VAS..... BURNING AMP..."
"Federmann
Many members have commented on your amplifier design.
Many have complimented the work that you have done.
Others have made suggestions to improve the amp.
Their suggestions are based on a wealth of experience and knowlege of amplifier design.
So far all you seem to have done is defended your design as is.
Are you interested in improving this amplifier with the help and support of the members of this forum?
I feel that your stance is alienating other members if the last few posts are anything to go by!"
"Topology federmann ?...
A bit exagerated to give his name to a topology
he didn t invent at all , apart perhaps in his wildest dreams... "
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