OPA627 Pre with onboard regs

tobias_svensk · 24th July 2005, 06:09 PM

In this neverstopping preamp thing I tried to draw a one-channel OPA627 without a buffer but with onboard PSU & LM317/337
I tried to make it with a starground (or at lest I think so

)
What do you think, would this work? or is the "starground" just a waste?

tschrama · 24th July 2005, 08:06 PM

I'm sorry I cann't help you, but i'm completely stuned by your 3D PCB design.... wwaauuuaaaawwww how did you do that?

DcibeL · 24th July 2005, 08:18 PM

I am no expert at PCB design, but that looks fantastic. I love the look of those nice curvy tracks.

gamma · 24th July 2005, 08:34 PM

tobias_svensk: I have to say it looks graet...BUT I find an error in the layout (I think)....cupper trases at the "component side" is a trouble...take a look on the capacitors....it's impossible to solder...isnt it?

DcibeL · 24th July 2005, 08:42 PM

You are correct. Tracks at the capacitors and the connectors will have to be changed.

VT67 · 24th July 2005, 09:35 PM

As far as I can see it, that is a two layer board so all the holes will be plated through. Therefore it's not a problem on the elco's and connectors. The only thing I would change are +/- traces. Now they are starting from the big elco. I would make the trace between the elco and the filmcap wider and let the two traces going towards the op-amp start from the pad of the filmcap and not from the elco.
For the rest, nice idea Tobias.

Regards

tmblack · 24th July 2005, 09:43 PM

Absolutely stunning work.
Please tell us what software can produce this 3D artwork.

Tom

DcibeL · 24th July 2005, 09:43 PM

I guess I am just used to the PCB milling machine I used at school, which did not have hole plating capabilities. Tracks had to be where they could be soldered to, and via holes had to me manually filled. But yes, provided the holes are plated, you will be fine.

Russ White · 24th July 2005, 09:57 PM

Great Work Tobias. As always

I really like it.

VT67 · 24th July 2005, 10:01 PM

Quote:

Please tell us what software can produce this 3D artwork

It's called Eagle 3D. You also need PovRay the generate the 3D image. I have been playing around with the software but so fare I haven't being able to generate a 3D image yet. Tobias is a little bit better in it than I am.

24th July 2005, 06:09 PM	#1
tobias_svensk diyAudio Member Join Date: Jan 2004 Location: Hudiksvall	OPA627 Pre with onboard regs In this neverstopping preamp thing I tried to draw a one-channel OPA627 without a buffer but with onboard PSU & LM317/337 I tried to make it with a starground (or at lest I think so ) What do you think, would this work? or is the "starground" just a waste?

24th July 2005, 08:18 PM	#3
DcibeL diyAudio Member Join Date: May 2003 Location: Saskatchewan	I am no expert at PCB design, but that looks fantastic. I love the look of those nice curvy tracks. __________________ The power of Science compels you!

24th July 2005, 08:42 PM	#5
DcibeL diyAudio Member Join Date: May 2003 Location: Saskatchewan	You are correct. Tracks at the capacitors and the connectors will have to be changed. __________________ The power of Science compels you!

24th July 2005, 09:35 PM	#6
VT67 diyAudio Member Join Date: Jun 2004 Location: Belgium	As far as I can see it, that is a two layer board so all the holes will be plated through. Therefore it's not a problem on the elco's and connectors. The only thing I would change are +/- traces. Now they are starting from the big elco. I would make the trace between the elco and the filmcap wider and let the two traces going towards the op-amp start from the pad of the filmcap and not from the elco. For the rest, nice idea Tobias. Regards __________________ VBITNGC Krell KSA-50 Krell KSA-100MkII

24th July 2005, 09:43 PM	#8
DcibeL diyAudio Member Join Date: May 2003 Location: Saskatchewan	I guess I am just used to the PCB milling machine I used at school, which did not have hole plating capabilities. Tracks had to be where they could be soldered to, and via holes had to me manually filled. But yes, provided the holes are plated, you will be fine. __________________ The power of Science compels you!


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24th July 2005, 08:06 PM	#2
tschrama diyAudio Member Join Date: Jul 2001 Location: The Netherlands	I'm sorry I cann't help you, but i'm completely stuned by your 3D PCB design.... wwaauuuaaaawwww how did you do that?

24th July 2005, 08:34 PM	#4
gamma diyAudio Member Join Date: Jun 2005 Location: Jönköping	tobias_svensk: I have to say it looks graet...BUT I find an error in the layout (I think)....cupper trases at the "component side" is a trouble...take a look on the capacitors....it's impossible to solder...isnt it?

24th July 2005, 09:43 PM	#7
tmblack diyAudio Member Join Date: Jan 2005 Location: UK	Absolutely stunning work. Please tell us what software can produce this 3D artwork. Tom

24th July 2005, 09:57 PM	#9
Russ White diyAudio Member Join Date: Jan 2005 Location: Nashville, TN, USA	Great Work Tobias. As always I really like it. __________________ Less pulp more juice Twisted Pear Audio.

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