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16 Sep 2017 13:12:23 UTC
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EEVblog #172 - DIY Acoustic Sound Panels
Dave shows you how he built his own acoustic sound absorption panels for his recording studio using Tontine Acoustisorb 3 material.
Data on the material is here:
http://www.tontineinsulation.com.au/technical-data
Data on the material is here:
http://www.tontineinsulation.com.au/technical-data
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Also a discussion of mounting TO-220 package to such cases to use the case as a heatsink, and using isolated internal heatsinks.
In particular for the µSupply project. This is Part 14 of that series.
The uCalc project gets another look in, and does the Sharp Memory dot matrix LCD.
Forum: http://www.eevblog.com/forum/blog/eevblog-644-how-to-design-front-panels-on-extruded-enclosures-supply-part/
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Service manual: http://acorn.chriswhy.co.uk/docs/Acorn/Manuals/Acorn_A3000SM.pdf
Reference Manual: http://acorn.chriswhy.co.uk/docs/Acorn/Manuals/Acorn_A3000TRM.pdf
Schematics: http://acorn.chriswhy.co.uk/docs/Acorn/Manuals/Acorn_A3000TRM_drawings.zip
Forum: http://www.eevblog.com/forum/blog/eevblog-507-the-first-arm-computer-acorn-archimedes-a3000/
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Mini rant time too - Manufacturers take note, this is how you respond to problems and keep customers happy.
Here is the Agilent notice:
http://cp.literature.agilent.com/litweb/pdf/U1272A-02.pdf
FLUKE RESPONSE:
No surprise really, Fluke have responded.
I got a call from them and they have not only fixed the GSM problem (official explanation, they found a few RF sensitive components), but a new revision board is being tested as we speak.
I'll hope to have a lot more on this a later date...
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Teardown Tuesday.
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Forum: http://www.eevblog.com/forum/blog/eevblog-613-prema-6047-multimeter-teardown/
EDC Voltage Standard Calibration Check: https://www.youtube.com/watch?v=onqsjDJq4I0
High res photos: http://www.eevblog.com/2014/05/07/eevblog-613-prema-6047-multimeter-teardown/
User manual: http://www.ko4bb.com/manuals/index.php?dir=09%29_Misc_Test_Equipment/Prema
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A bumper mailbag, the last one for 2014!
SPOILERS:
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Girl time!
And old GPS unit, and a PIN Calculator from Gemma & Liz a.k.a Annierak and Hoofbag
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Blood Glucose meter
Crappy calculator with secret construction technique - cardboard!
High voltage Victor power supply modules
PicoPSU ATX Power Supply for embedded automotive computers:
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Bubble memory from an old GRiD laptop computer.
I Dream Of Wires documentary DVD about the development of the electronic synthesiser.
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The Human Comparator:
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Precision electronics knives from:
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High altitude ballooning PCBs from Chris Stubbs:
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And an awesome drawing of Sagan from That Crazy Indian Bloke
Forum: http://www.eevblog.com/forum/blog/eevblog-697-mailbag/
EEVblog Main Web Site: http://www.eevblog.com
The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2
Support the EEVblog through Patreon!
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Forum here: http://www.eevblog.com/forum/blog/eevblog-616-how-microphone-phantom-powering-works/
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