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marlowson 25th June 2012 08:47 AM

How about 3xLM3886 on one PCB! PA150!
Ladies and Gentlemen

Basing on alexw88's ( experience, I've created my own project of PA150 (3xLM3886). It has been modified a bit, the size has been reduced, and some other tweaks have been made. I'd like to share the project with you (below). PDF file with switchable layers, try it! I'm gonna order the PCB soon, if anyone wants to grab a couple of PA150 PCB, let me know. Of course, tweaks still can be done before the order.

PCB layout:

AndrewT 25th June 2012 10:48 AM

One post, no previous history.
Who are you?
Where are you based?

marlowson 25th June 2012 10:58 AM

I'm more of a practicioner and reader than talker :)
No bother! :)

Thanks everyone for the interest. There are 2 orders (4 PCBs) already! :)

No 4 25th June 2012 08:54 PM

Maybe a little more information would help. Some information about the power supply. Do you have any picture? Have you done any testing?

marlowson 26th June 2012 09:00 AM

No picture, use the visualisation at the top of the page.

Power supply up to +35/-35 VDC. LM3886 datasheet.
Details: PA150 - 3x LM3886 PCB assembly guide
PA150 - 3x LM3886 PCB assembly guide

I has been well tested by alex88. Testing and measurement:
DIY BPA300 6x LM3886 300W audio Amplifier

It is still the same project, except the capacitors which were moved from the bottom to the top, C10 (10u) replaced with wima (better solution), and some downsizing.

marlowson 26th June 2012 02:06 PM

For now:
syklab - 2 pcs
potepuh - 2 or 4 pcs
me - 2 pcs

and also on Polish dyi audio forums:
dekaenja - 2 pcs
kat01 - 2pcs

That is 10 or 12 altogether :)
The producer estimated the cost depending on quantity:
8 pieces - 10 EUR apiece
16 pieces - 7 EUR apiece

Anyone who is interested, just give me your e-mail address and I will send you some details.

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