[Amps] SS amps watercooling - was PowerGenius XL

[John Simmons]

I'm in the planning stages  of a solid state amp. I am considering water 
cooling... looking for pointers on design ideas, parts suggestions, etc.

73, John NI0K

> Roger (K8RI) <mailto:k8ri at rogerhalstead.com>
> Tuesday, February 14, 2017 5:02 PM
> Years past, I worked on many water cooled tube type 
> amplifiers/oscillators.  Compared to those, water cooling a SS amp is 
> outlandishly simple.  Route the Cu water tube through a milled slot in 
> the heat spreader.  The most complicated part is how well you want to 
> monitor the water flow and temp. Typically a restrictor is placed in 
> the input line and the pressure is measured on both sides of the 
> restrictor. Due to the heat spreader being at chassis ground, heat 
> sensord can be directly attached to the spreader plate.
>
> This has the advantage that a finned cooler can be added, so if the 
> water flow stops, the amp can still be fan cooled
>
> 73, Roger (K8RI)
>
>