F5X -- the EUVL Approach - The Build Thread - Page 50 - diyAudio
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Old 7th March 2013, 07:32 PM   #491
NicMac is offline NicMac  Italy
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Quote:
Originally Posted by CeeVee View Post
...ahh you are using CRC, i was hoping for data on regulator running at full load in those conditions
I don't have the hardware for the CregC version yet so I cannot comment on this. I have paid for it, I think it may have shipped to me, and I promise to all of you batch 1 subscribers to post when I have it up and running.
I guess it will make the same or possibly more heat, but radiate this better than our "temporary" CRC version.
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Old 7th March 2013, 07:43 PM   #492
EUVL is offline EUVL  Europe
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CRegC has same amount of heat as CRC.


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Old 7th March 2013, 07:47 PM   #493
NicMac is offline NicMac  Italy
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Originally Posted by EUVL View Post
The promised circuit description of the protection board
Great write-up Patrick! I really do appreciate the time you (or ashaw) must have put into this circuit description. Now I feel much more motivated to go back to it
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Old 7th March 2013, 07:51 PM   #494
EUVL is offline EUVL  Europe
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Wait till Alexis has done the assembly & test procedures.


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Old 7th March 2013, 07:53 PM   #495
NicMac is offline NicMac  Italy
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Quote:
Originally Posted by EUVL View Post
CRegC has same amount of heat as CRC.
Patrick
If you say so I believe you.
The resistors in the CRC are not connected to the heat sink so their heat dissipation is less distributed and thus more focused and intense. Or am I wrong?
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Old 7th March 2013, 07:57 PM   #496
NicMac is offline NicMac  Italy
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Quote:
Originally Posted by EUVL View Post
Wait till Alexis has done the assembly & test procedures.
Patrick
My patience may be to short for this to happen
Now I have a reliable circuit description and this is really what I needed.
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Old 7th March 2013, 08:03 PM   #497
EUVL is offline EUVL  Europe
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Given the same transformer and the same bias, the dissipation is always the same.
How it is distributed and how hot each location gets is another matter.



But you are right about the chimney effect.
Will probably be more effective with the new regulator sinks.


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Old 7th March 2013, 08:25 PM   #498
NicMac is offline NicMac  Italy
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>Given the same transformer and the same bias, the dissipation is always the same. How it is distributed and how hot each location gets is another matter.

Never to late to learn for me

>But you are right about the chimney effect. Will probably be more effective with the new regulator sinks.

I understand that the new heat-sinks having most of their dissipating area flanking the "chimney" tunnel and with the fins in vertical orientation will quite significantly improve the chimney effect.
As usual - simple, but solid engineering
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Old 7th March 2013, 09:05 PM   #499
CeeVee is offline CeeVee  Portugal
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Quote:
Originally Posted by NicMac View Post
>.....

I understand that the new heat-sinks having most of their dissipating area flanking the "chimney" tunnel and with the fins in vertical orientation will quite significantly improve the chimney effect.
As usual - simple, but solid engineering
That is why i was questioning you on the space at the bottom between glass and F5X Nic, i reasoned that easier air flow at the bottom would speedup convection air flow upwards...but it seems the case is indeed well designed and bottom cut-outs give enough airflow for this space to be uncritical.

Patrick has done a good job....as usual
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Old 8th March 2013, 12:32 AM   #500
Horio is offline Horio  United States
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Nic, have you been running your F5X with the bottom screens/grills attached to the underside of the sinks? Just curious.
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