"The Wire AMP" Class A/AB Power Amplifier based on the LME49830 with Lateral Mosfets - Page 75 - diyAudio
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Old 18th February 2012, 01:13 PM   #741
AP2 is offline AP2  Italy
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..From super smps under test...?

Regards
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Old 24th February 2012, 03:24 AM   #742
opc is offline opc  Canada
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Hi Guys,

I finally finished writing up the instructions for the amp assembly, so you can take the time to read them now while we all wait for mosfets to arrive

Any comments, suggestions or corrections are welcome. I tried to cover all the major points, but I am assuming a certain level of skill when it comes to this project.

Also attached is the functional schematic showing the resistor values for an SE circuit. Every part is carefully covered in the assembly document, so please read it thoroughly. If a question is asked here, that is already answered in the instructions, you'll simply get a "Read the instructions" post.

I will be posting all these documents, along with the worksheet and anything else in a build Wiki that should be up in the next few days.

Cheers,
Owen
Attached Files
File Type: pdf LME Amp Assembly Instructions.pdf (163.3 KB, 1870 views)
File Type: pdf LME AMP SCHEMATIC.pdf (32.7 KB, 2621 views)
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Old 24th February 2012, 06:43 AM   #743
qusp is offline qusp  Australia
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nice!! well put together mate, funny you mentioned thin film RF caps, i was thinking of trying the shielded SMD CDE teflon RF caps here, but i would have to put 2 in parallel to reach the value, as the same cap is mica after 10pf or maybe before and that wouldnt be such a good idea for resonance in this position i would think. ive been meaning to look into other brands to see if anyone goes higher in a similar component
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Old 24th February 2012, 07:49 AM   #744
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Quote:
Originally Posted by AP2 View Post
..From super smps under test...?

Regards
No news?!
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Old 24th February 2012, 08:43 AM   #745
lolo is offline lolo  France
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Thanks Owen, we could not ask for more, really!
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Old 24th February 2012, 12:11 PM   #746
qusp is offline qusp  Australia
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actually i found the CDE do come in 20pf its the MCM01

just not at digikey where i got the 4.7pf for my aleph JX input RFI filter
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Old 24th February 2012, 12:13 PM   #747
qusp is offline qusp  Australia
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Thanks Owen, we could not ask for more, really!
ahh but they will
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Old 24th February 2012, 12:33 PM   #748
Mark Kravchenko --- www.kravchenko-audio.com
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Yeah we are all ungrateful ingrates! We want more.

But as for me...

I think it simple wonderful. Great job Owen. I know that writing a good manual is not an easy thing to accomplish.
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Old 24th February 2012, 01:37 PM   #749
lolo is offline lolo  France
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ahh but they will
actually.. thinking of it..
I will for sure have issues with the grounding.. 10 boards, 10 PSU..
I remember the pain when I did my 6 channels preamp, lots of hum..
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Old 24th February 2012, 03:58 PM   #750
qusp is offline qusp  Australia
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@ Mark, call me jaded, lets just say the threads so far have been an eye opening experience.

lolo: hmm maybe, but the good thing about this amp in that respect is its thick copper, chunky ground planes and the PCBs are tiny, so there isnt too much opportunity for significant voltage drop across them. you'll have your work cut out for you, but probably not as badly as with many other amps
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