guys good news i am from listening to this amp it is cold . that is the small sink for fet outputs is so cold and the volume is moderate i used bc327 and bc337 instead of bd139 and 140 .
if you try bc3xx with the layout i posted please don't forget to interchange pins legs .
>>>> my powersupply is +/- 33vlts and outputs are irf9540 and irf540n
earlier i tried 2sa1013 and 2sc2229 (which i have in plenty) but the outputs were hot
http://forcedgifting.com/?ref=stewin
if you try bc3xx with the layout i posted please don't forget to interchange pins legs .
>>>> my powersupply is +/- 33vlts and outputs are irf9540 and irf540n
earlier i tried 2sa1013 and 2sc2229 (which i have in plenty) but the outputs were hot
http://forcedgifting.com/?ref=stewin
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@ Stewin
i just create pcb with your layout. then i apply +-40v power without mosfets, i got heat on 2N5401 and bd139-140, is it normally?
i just create pcb with your layout. then i apply +-40v power without mosfets, i got heat on 2N5401 and bd139-140, is it normally?
it is normal but the output fets do not heat . in my experience those drivers they heat a lot too but it works well both in power and clarity . i hope someone comes up with better transistors for those sections😉
Hi
what kind off this cores is suitabale for class d amp?
what kind off this cores is suitabale for class d amp?
An externally hosted image should be here but it was not working when we last tested it.
Then none of them is good,cut the etd core on the center leg to create 2 mm gap.
For 2 ohm stability you need lower inductance,higher capacitance and better output transistors.
For 2 ohm stability you need lower inductance,higher capacitance and better output transistors.
http://www.diyaudio.com/forums/class-d/69349-yet-another-version-ir-audio-amp-4.html look at post 38... You can read schematics with circad98, free demo download... From Holophase...
hi fredos nice work on d amps . have you tried to make your amp non ucd?
http://forcedgifting.com/?ref=stewin
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