|24th July 2012, 04:09 AM||#11|
Join Date: Jul 2012
Just want to start a thread about power supply of D amps.
As I seen many prebuild solid state amps has power transformer has power equal or less than the dictated power of the amp. For example, a 80*2 ta2022 has a 160W transformer. Does redundancy need for transformer? May it a compromise to cost and size?
For the cost, I survey the Taobao,
24V 300W turtoid transformer: RMB65
24V 10A SMPS: RMB80-121
I don't sure the quality of either.
|24th July 2012, 05:18 AM||#12|
Join Date: Oct 2009
Location: Brisbane, Australia
I really think you need to look at those measurements of the wire powered by DPS-600 and then tell me theres no advantage to regulated. I didnt buy them to save money, I bought them because the performance was spectacular and i'm building a multichannel amp so size matters
actually here i'll link some. show me a linear unregulated supply with that sort of performance and i'll show you something that costs more and is 5-10x the size. it would have to be an exceptionally well designed unregulated supply at any size/cost.
i'm sure it can be done, but in particular the full power (250W) pulse at 100Hz and lack of under or overshoot on the start/stop at 1kHz measures (this is of it actually powering the amp, red and blue traces are the rails) it would be a tall order. swing in this case is +/-65v, 20v divisions and noise is dB/V
Last edited by qusp; 24th July 2012 at 05:32 AM.
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