heat sink for UCD700?

[Eva]

Pierre:

That is probably the best that you can do without using special insulators or plastic transistors. I would recommend common-mode filters on all wirings coming to the PCB, particularly if more than one channel is capacitively coupled to the same case or heatsink.


classd4sure:

It's great to know that these modules are well engineered, but I want the insulators for my own designs

Concerning the piezoelectric effect, I was talking about whatever sound might be audible through the heatsinks, not trough the speakers (just to make it clear)

[classd4sure]

Originally posted by Eva
Pierre:

That is probably the best that you can do without using special insulators or plastic transistors. I would recommend common-mode filters on all wirings coming to the PCB, particularly if more than one channel is capacitively coupled to the same case or heatsink.


classd4sure:

It's great to know that these modules are well engineered, but I want the insulators for my own designs

Concerning the piezoelectric effect, I was talking about whatever sound might be audible through the heatsinks, not trough the speakers (just to make it clear)

I'd hoped so, was worried you were walking on the dark side for a second

[MOER]

I agree with Sander 100% - a fairy tale!

[gmikol]

Originally posted by Eva

p.s. Does anybody know where aluminium oxide insulators are available in small quantities?

Mouser has them in the US from Aavid Thermalloy.
USD 0.40 for TO-220
USD 0.70 for TO-247

Don't know what Mouser is like outside the US.

Hope this helps a bit.

--Greg

[pburke]

Originally posted by Eva
Trouble is the terrible advice I'm reading in that thread.

dunno, I got enough to move on. Need no heat sink, thicker rear panel is probably good, and when using some thermal pads to mount the module, I'll be fine if there should be some goofy electrical gremlins, but for now I won't even bother doing that. Can always add those later if I should hear my rear panel make noise

Just gotta pick what you want to hear, and there's lots of good advice in the thread ;-)

Peter

[Ric Schultz]

Its quite clear that especially the digital forum and Diyaudio in general is dominated by engineering types who like to talk engineering to each other. When it comes to things outside of the engineering norm....well....a laugh and little mockery and little put down and we are back to our safe little club. If the info that I have discovered through direct experiential science (listening with my ears) is not helpful to anyone here because you do not "believe" it could make any difference then I would say my words are falling on deaf ears....so....you will get your way and I will refrain from making posts that will make you spill your coffee and chuckle in amazement.

You are now all safe, you can now come out of your shelter and take your hands off your ears.....you are now all safe....all clear...the mystical weirdo has gone....the playground is now safe once again.

You guys are really tooooo much....very enjoyable coming to this neck of the woods....to bad I don't have anyone to talk to... oh well. I guess I will go back to where all mystical weirdos go...maybe the Audio Asylum.....tweakers section....you know those guys who listen to stuff and report what they hear...some of them even have an open mind.

[SSassen]

Uhm, yeah, right!? I think someone forgot to take his medicine this morning

Best regards,

Sander Sassen
http://www.hardwareanalysis.com

[Peter Daniel]

One such commercial amp, with a great attention to vibration control (including heatsinks), was Niro 1000 amplifier: http://www.onhifi.com/product/niro_engines.htm

Niro is, of course, Niro Nakamichi, one of the principals of the old Nakamichi cassette-player manufacturing firm. In 1998, he founded the Mechanical Research Corporation, with the idea of applying electro-mechanical principles to audio design: He felt that the traditional method of audio design -- concentration on the electrical-circuit design to the exclusion of other aspects of physics, most specifically the electro-mechanical nature of circuit design -- had prevented audio design from truly evolving to its full potential.

[classd4sure]

Introducing the mag-lev switching amplifier.... comming soon.

[classd4sure]

It's simple enough to see why he'd opt to get out of making cassette decks in the year of 98, grab onto a gimmick, call it an organisation and sell his gimmick for >$20K a pop.

I'm not even going to get into it over the spring loaded power supply.

Ric, sorry I started off with the laugh, I was honestly just too tired at the time to come up with much else, and felt that's all it was deserving of.

Please try to keep in mind that it was in fact exactly sound engineering and listening that got you your module to use with your products, and I'd certainly hope that the tired of gimmicks people here at DIYaudio will in fact continue to thrive from sound engineering in place of the voodoo, as would the people at Hypex with the UCD.

That said the reason mentioned for using the ceramic isolators was in fact their better heat conduction.. with that in mind you'd do well to look up what the heat transfer coefficient of that brass plate of yours is with respect to aluminum, along with perhaps their thermal emissivity coefficients.

Your customers might get a product out of it in the end, should you have a mind open enough to admitt you were wrong in your original position, and place more importance on the fact that better cooling will lead to a longer working life of the product, given the engineering rule of thumb that for every 10 degree C increase lifespan is halved.

I'd like to see you stick around instead of run off to some haven that's void of the engineer's mind where ignorance thrives and voodoo sells.

Best regards,
Chris