Yes, PURE MOSFET - FIXED 500W, 25 OHM RESISTOR amp.
Including a non-feedback bipolar design.
As for the USB audio, & video as well, here is where I am.
http://pages.infinit.net/helloftp/bd1.png 80Kb.
#1 = RGB / COMPONENT 24 bit 50 Mhz - 220 Mhz sampler board.
#2 = Composite / S-Video / Component, 54 Mhz 30 bit sampler board.
#3 = RGB / Component / HDTV / s-video / composite dual output 33bit (yes
33bits) video DAC board.
#4 = External sync in / out & RS-232 IF board.
#5 = 1U height rack mount compliant front panel board, buttons & leds & 2x24
character LCD module PCB.
#6 = Cheap power supply regulator board.
#7 = The brain, 30 bit flex parallel DVI In & Out, up to 512 megabyte ram at
2.1 Gbytes/sec ram controller. Fully asynch video scaling & de-interlacing
& scan-rate converting, or MPEG decode / encode & USB2.0 or 1Gbit Ethernet
controller, + up to 12 digital audio channels at 192Khz, 32 bit integer, or
32 bit floating point. Has an additional 4 I2C channels at 1 Mhz each.
#8 = Clean 2x4 cross bus mux switch for stand-alone mode.
#9 = UTMI USB 2.0 interface, can connector to board #7 DVI In, or Out.
Working on the audio PCBs now.
Don't worry, once everything it working, I will be making a compact
USB-Audio only PCB & USB-Audio & HDTV box which will be taken from this
large project.
Audio & video qualities will be un-surpassed in the under us 25K$ commercial
broadcast equipment arena.
_____________
Brian Guralnick
[EMAIL PROTECTED]
----- Original Message -----
From: "Bagotronix Tech Support" <[EMAIL PROTECTED]>
To: "Protel EDA Forum" <[EMAIL PROTECTED]>
Sent: Friday, August 15, 2003 10:57 AM
Subject: Re: [PEDA] OT audio WAS PCB Copper thickness VS mounted rails.
> > My PCB does not have any fine traces. It's a pure CMOS class A audio
> amp
> > and power supply. 3-4 traces are 25 mil wide (audio in), everything
else
> is
> > at least 50 mil wide, mostly 250 mil wide.
>
> Pure class A, eh? Those are the best sounding space heaters I know of ;-)
>
> When you say CMOS, do you mean a MOSFET amp?
>
> Still looking forward to your USB uber-fi codec. When will that be
> available?
>
> Anyone heard how the new class D amps sound? Several chip makers (TI,
> Zetex, etc.) have come out with class D amp chips recently. Personally,
I'm
> skeptical until I get to audition an amp made from these. Might be good
for
> el cheapo consumer audio, but hi-fi? I suppose a class D done right could
> sound good, but if you go cheap on the post-amp LC filters, it could sound
> really bad. And using high quality magnetics might end up making it cost
as
> much as a class AB amp would.
>
> Best regards,
> Ivan Baggett
> Bagotronix Inc.
> website: www.bagotronix.com
>
>
> ----- Original Message -----
> From: "Brian Guralnick" <[EMAIL PROTECTED]>
> To: "Protel EDA Forum" <[EMAIL PROTECTED]>
> Sent: Thursday, August 14, 2003 7:57 PM
> Subject: Re: [PEDA] PCB Copper thickness VS mounted rails.
>
>
> > > The problem with calling out 4 oz. Cu, or even 2 oz. for that matter,
is
> > > that the board house will probably "pattern plate" the Cu, and it may
> not
> > be
> > > uniform. There is additionally the problem of etching small traces in
> the
> > > same layer, due to the thickness.
> >
> > My PCB house says that their process is a positive growth of copper,
> not
> > an etch process. Is this your described "pattern plate"? When you say
> "not
> > uniform", how much error can I expect? Will it matter with traces from
50
> > mil to 500 mil.
> >
> > My PCB does not have any fine traces. It's a pure CMOS class A audio
> amp
> > and power supply. 3-4 traces are 25 mil wide (audio in), everything
else
> is
> > at least 50 mil wide, mostly 250 mil wide.
> >
> > _____________
> > Brian Guralnick
> > [EMAIL PROTECTED]
>
>
>
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