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@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)
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