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hollowman
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Laser infrared thermometer for test labs

In the FLAC vs. WAV thread, I noted that probing an ACTIVE (i.e., powered, in situ) topological component -- IC, opamp, etc -- may help quantify (measure) sonic/qualitative attributes that have tradit. had no metric analog.

On a few EE blogs and YouTube EE channels (e.g., EEV blog), laser infrared thermometers have been getting some attn. as they seem to offer some addit. benefits in labs tests. E.g., quick, hands-off analysis of component behavior.

So for the FLAC vs WAV test, labs may want to point the device at certain ICs and quickly asses running temps. Heat changes resistivity and other charac. of ckt traces and affect other thermodynamic aspects of material physics. 

Not sure ... maybe some audio designers are already way ahead of the game ;)

John Atkinson
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Re: Infrared thermometers

hollowman wrote:
So for the FLAC vs WAV test, labs may want to point the device at certain ICs and quickly asses running temps. Heat changes resistivity and other charac. of ckt traces and affect other thermodynamic aspects of material physics.

I actually have a laser infrared thermometer that I use to measure amplifier heatsink temperatures, etc. I am not sure if the target area is small enough to examine individual IC temperatures, but I will try the idea out.

John Atkinson

Editor, Stereophile

hollowman
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Radiation metrics and FLIR ...

For the same economy, a std. (non-IR, physical-contact) probe style unit is still more accurate. But that may cause grounding and electrostatic issues.

If a lab has deep pockets, investment in FLIR equipment may also be worthwhile....

http://www.youtube.com/user/FLIRThermography

http://www.youtube.com/watch?v=BsUrIjlibsw

hollowman
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Seek thermal imaging camera

FLIR's patent "license" for the underlying technology expired at the start of the year, allowing competitors to offer very-low-cost alternatives.
A popular (and, gauging from reviews, effective) option is the $200 Seek Thermal camera.
I think it's avail for both Apple and Android.
https://www.youtube.com/watch?v=yEXLLh0AXv0
http://www.thermal.com/

... OKAY, Stereophile ... that's a Budget Accessory Product of the Year (in my book!!)

...and JA would have a new weapon against the so-called objectivists:

rrstesiak
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Thumb's Up!

As having studied Electrical Engineering myself, I applaud the technical and also simply "fun" merits of thermal imaging of electrical components.

Also, just validating this type of analysis is spot-on performed in the "real world" and is not uncommon at all. The iPhone gadget is especially appealing as it shows the actual thermal zones and potential damaging "hot spots". If $200 is in the budget and you already have an iPhone, I would recommend that device.

If you already own a gun-type device, use it, but if you are looking to buy, the iGadget is superior.

Listen On!

Ron

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