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Old 3rd October 2013, 02:45 PM   #21
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Quote:
Originally Posted by radiosmuck View Post
Big big OVERKILL, a fan is nothing, check this out (grin)
Liquid Cooling Build
Heh, the guy built monstrous cooling system... then, so some random reason decided to add chipamp to it
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Old 4th October 2013, 09:41 AM   #22
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The cooling system was the project, chipamp was added to justify it.

LOL

Gajanan Phadte
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Old 13th October 2013, 05:27 PM   #23
muttled is offline muttled  United States
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Putting aside that this isn't necessary in this application, the question is still a valid one for other uses!

A solution that might not seem easy but isn't that bad would be a micro-controller. TI's MSP430 line of chips goes for about $1.80 a chip when purchased by itself and 3 lines of code could make it check for line voltage and if it's not present anymore, run the fan relay for X more seconds.
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Old 14th October 2013, 08:39 AM   #24
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Quote:
Originally Posted by muttled View Post
Putting aside that this isn't necessary in this application, the question is still a valid one for other uses!

A solution that might not seem easy but isn't that bad would be a micro-controller. TI's MSP430 line of chips goes for about $1.80 a chip when purchased by itself and 3 lines of code could make it check for line voltage and if it's not present anymore, run the fan relay for X more seconds.
And supply the msp430 & fan with battery?
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Old 14th October 2013, 03:30 PM   #25
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Originally Posted by honeycomb0 View Post
And supply the msp430 & fan with battery?
Yes, the point of the question was "how to continue cooling, even if the power source is disconnected"....like a power outage, or someone pulls the AC plug.
.....so it's run by either a battery or a supercap.

BTW....I have some APEX PA04 high volt/current opamps .....where the matching heatink can be liquid-cooled. I'm slowly gathering parts to use these in a "stupid-powerful" chip-amp.
http://www.apexanalog.com/wp-content.../10/HS11_E.pdf

Last edited by redrabbit; 14th October 2013 at 03:48 PM.
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Old 14th October 2013, 04:09 PM   #26
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Quote:
Originally Posted by redrabbit View Post
... the point of the question was "how to continue cooling, even if the power source is disconnected"....like a power outage, or someone pulls the AC plug.
Yes. And my point, as the point of some people already commented is that "after someone pulls the AC plug" the system will "continue cooling, even if the power source is disconnected".

Last edited by honeycomb0; 14th October 2013 at 04:12 PM.
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Old 14th October 2013, 05:33 PM   #27
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Quote:
Originally Posted by honeycomb0 View Post
Yes. And my point, as the point of some people already commented is that "after someone pulls the AC plug" the system will "continue cooling, even if the power source is disconnected".
you got it....
It may not be entirely useful in a chipamp situation....where passive cooling is adequate.
But in a situation where the movement of air "is the only" method of cooling.....a reasonable method of continued cooling....is a good path to explore......even if only for future reference.

Last edited by redrabbit; 14th October 2013 at 05:36 PM.
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Old 15th October 2013, 08:16 AM   #28
AndrewT is offline AndrewT  Scotland
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Even with ONLY air flow cooling, the powered OFF amplifier will continue cooling from the instant that power goes to OFF !!!!
And will continue to do so until the slowest cooling component is down to ambient temperature.
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regards Andrew T.
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Old 22nd October 2013, 03:38 PM   #29
muttled is offline muttled  United States
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Originally Posted by honeycomb0 View Post
And supply the msp430 & fan with battery?
I was thinking water tower and turbine, but I'm willing to consider an enormous flywheel as well.
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Old 22nd October 2013, 05:42 PM   #30
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I sent this thread to the Fukushima task force.
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