[Elecraft] KPA1500 power supply fan?

Josh Fiden josh at voodoolab.com
Tue May 2 16:49:54 EDT 2017


Not likely. 2400W output, optimistic efficiency 95%, you've got to dump 
 >125W heat key down at full power on high duty cycle modes. It has a 
fan, but who cares? You can move the power supply away from operating 
desk (very happy about this feature!) and besides, if you're concerned 
about fan noise the amp will be most of it.

73,
Josh W6XU

On 5/1/2017 7:40 PM, Clay Autery wrote:
> It's a purpose built switcher, so they may have been able to use
> passive-only thermal management...
>
> ______________________
> Clay Autery, KY5G
>
> On 5/1/2017 9:05 PM, Charles Johnson wrote:
>> I’ve seen no mention of a fan inside the power supply cabinet of the new KPA1500. Anyone know if one is there and what might be the noise impact? Variable speed maybe?
>>
>>



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