With Supreme grade transformer, blame is to be put on that shiny pot, with very low heat emissivity.
Solution: Paint it black
or, listen to the music and don’t pay attention to those insignificant issues.
DC offset is mostly related to the BC564 temperature.
Solution: DC servo
As for high temperatures, I will have an implementation of Babysitter, based on Mark Johnson’s design.
Solution: Paint it black
or, listen to the music and don’t pay attention to those insignificant issues.
DC offset is mostly related to the BC564 temperature.
Solution: DC servo
As for high temperatures, I will have an implementation of Babysitter, based on Mark Johnson’s design.
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Yes, very good fans but my choice is 4 pcs. of 15 mm slim 80 x 80 mm fans.
Aliexpress - fans
They are barely audible at full speed, close to ear.
Aliexpress - fans
They are barely audible at full speed, close to ear.
65deg is not acceptable for a traffo. Should be 40deg or less. 50 at a push, but really that's still not good enough. It's too small
Take in the account temperature inside case. With heatsinks at 55 degrees and lid on, inside must be 40-45. So, transformer is only 20 -25 degrees above ambient. Polished pot also doesn’t provide much heat removal through radiation. I think that 65 degrees is expected under such conditions.
Hi ZM. With only Left channel connected to the PSU and after 1 hour of warming up, the pot of transformer was just at about 30 degC. Same with just the Right channel powered - the pot at about 30C after an hour. With both channels powered and 1 hour of heating up, the pot of power transformer at about 35C, after 1,5 hrs - 40C, after 2,5 hrs at 50C. Diod bridges now are at 55C, heasinks at 50C.
What would you say? Perhaps tombo56 is correct that this is expected?
The shiny pot was at 65C after the full day of opperation, some 8 hrs perhaps.
The new monoblock chassis sets look optimum for this build. In this case, I'm glad that I've been slow to build my boards into a chassis. The Triad Magnetics transformers have performed very well so far in my Sony VFET external PSU, and the re-build of my M2x. I'm going to stick with those.
Do I? I was hoping to either use the duel rail SLB or copy Tombo's super reg PSU install
400mm deep is crazy. I can just fit 350. 300 being 'normal'
Ideally I just want someone to tell me that a 3U x 300 Dissipate with a 4mm front will be perfectly fine
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3U/400 with Babysitter
though, you can set Iq to lower value, according to heatsink temp
no big deal, A Class envelope is enormous with Square Law