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deafbykhorns  
#1 Posted : Friday, December 16, 2011 8:52:05 PM(UTC)
deafbykhorns

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Running a Placid to power Buffalo III
Manual says to run a larger heatsink when installing the tridents.
Probably going to change the ones on the Placid BP powering the Legato, just seems way too hot
Brian Donegan  
#2 Posted : Friday, December 16, 2011 10:57:06 PM(UTC)
Brian Donegan

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That needs to be amended. The standard heatsinks will be fine powering the Buffalo-III with Tridents.
LeonvB  
#3 Posted : Saturday, December 17, 2011 12:54:42 AM(UTC)
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The manual speaks of the original Placid version running a Buffalo with Tridents. Depending on the configuration bigger heatsinks may be needed in that case, as that version was originally intended for loads up to 400mA.

In this case: for a Placid BP the load of a Legato may be a bit on the high side, certainly if you are using the Legato with a buffer. The newer HD BP version or running one with bigger heatsinks are solutions. But please check your temperatures before making a decision: the Placid series are shunt regulators, and as such are designed to dissipate the energy you don't use. High temperatures are a feature. It's impossible to tell if it's too hot without hard data.

@Brian: we could use more information on this part, this is a fairly common question. Fi. which heatsink temperature do you consider ok for running over long periods, what are the practical limits of the various versions under normal conditions.
deafbykhorns  
#4 Posted : Saturday, December 17, 2011 2:55:15 PM(UTC)
deafbykhorns

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So what is the maximum allowed temperature?
I'll test it tonight
Russ White  
#5 Posted : Saturday, December 17, 2011 10:16:25 PM(UTC)
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If you get above 80C then you might consider larger heat sinks. :)
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