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Old 21st March 2010, 12:18 AM   #191
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Hey guys, I wanted to post these pics here just in case Brian is not able to get the manual up on our site before you folks need to start building.

For BUF-II there is not much to tell.

Use 15V rails. Stuff all the parts including J1-4 if you want to use a single bipolar supply.

Cheers!
Russ
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Last edited by Russ White; 21st March 2010 at 12:20 AM.
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Old 21st March 2010, 01:15 AM   #192
glt is offline glt  United States
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I received mine today...
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Old 21st March 2010, 01:27 AM   #193
ianp is offline ianp  United States
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Default Arrived in north California. Question about using transformers for output stage

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Originally Posted by qusp View Post
so noone over there has received theirs yet? mine is in the air on its way to OZ as of yesterday sometime, so wondered if anyone over there had theirs yet? I mean I know I was pretty early in the queue as I stayed up and bought it straight away pretty much, but surely someone beat me to the punch?
Click the image to open in full size.

Initially, I am planning to send the DAC output through a pair of Sowter 9545E transformers. Anything special that I need to do, or be aware of, for using the Sowters ?

Thanks

ianp
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Old 21st March 2010, 01:41 AM   #194
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Originally Posted by glt View Post
I received mine today...


One of my packages has been sitting in West Newbury, MA since 15:51 on the 18th.
I expect it's just getting itself prepared for the long journey. Maybe it's taking in the sights. I just hope it hasn't hooked up with a lady parcel - I'll never see it!
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Old 21st March 2010, 02:01 PM   #195
needsp is offline needsp  United Kingdom
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Hi Russ/Brian

You state in the manual that you use a AVCC a little higher than 3.3V. How high please?

Looking at the photos you've posted, your AVCC regulator module appears to derive its input from VD- as expected- but also has a connection to DVCC. Why?

Thanks

Paul
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Old 21st March 2010, 02:09 PM   #196
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The connection to DVCC is not used on the AVCC module. It is open. It is on the
header for other AVCC modules that might use it for a reference. Such as the type that the demo board and earlier Buffalos used. We used the 4 pin header on the AVCC module for consistency and mechanical strength.

The output voltage of our AVCC modules is ~3.5V on both sides It will
vary a little from part to part.

- Show quoted text -
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Old 22nd March 2010, 08:51 AM   #197
Bunpei is offline Bunpei  Japan
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Quote:
Originally Posted by glt View Post
I received mine today...
In Tokyo area in Japan I received mine this afternoon and I am now busy for assembling them. Today is a Japanese national holiday. It's lucky to have enough time.
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Old 22nd March 2010, 02:12 PM   #198
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Quote:
Originally Posted by Bunpei View Post
In Tokyo area in Japan I received mine this afternoon
Hey! No fair!

Does anyone live near West Newbury, MA? Perhaps they can go and find out why my delivery hasn't moved since Thursday (and give them a boot up the backside).
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Old 22nd March 2010, 02:35 PM   #199
NicMac is offline NicMac  Italy
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Quote:
Originally Posted by Duffy Moon View Post
Hey! No fair!
Don't worry! Your package has only begone its trip......
After West Newbury (MA) it will transit North Reading (MA) and Jamaica (NY) before finally being dispatched over the pond from ISC (NY).
From here all tracks will be lost.......
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Old 22nd March 2010, 02:41 PM   #200
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Quote:
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Don't worry! Your package has only begone its trip......
After West Newbury (MA) it will transit North Reading (MA) and Jamaica (NY) before finally being dispatched over the pond from ISC (NY).
From here all tracks will be lost.......
Well it's taking its sweet time! There are 2 packages and the other one went to Jersey City (presumably thence to Newark). I'm just confused as to why one moved and the other didn't.

I've emailed USPS anyway. I'll stop moaning now. It's just that I've waited about a year and a half to start building a DAC and I'm eager to start!
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