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Old 21st April 2012, 10:16 AM   #771
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Yeah I prefer the Ceramique myself. One less thing to worry about!
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Old 21st April 2012, 06:27 PM   #772
EUVL is offline EUVL  Europe
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Thermal conductivity for Silver is somewhat better.


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Old 22nd April 2012, 12:36 PM   #773
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Thermal conductivity for Silver is somewhat better.


Patrick
Yeap.
When I run my Ceramique v.1 vs Silver tests on some older CPUs (i.e. Athlon64 era) the Silver stuff actually gave lower temps - but it was only ~2 degrees C lower. Not enough (at least in that application) to justify the extra hassle.
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Old 25th April 2012, 06:41 PM   #774
EUVL is offline EUVL  Europe
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I have been asked by PM to post a schematics of SEN IV using LU1014.

If you compare the DAO (standard) follower to a 2SK170 source follower,
you can use the same substitution in the SEN IV V18 circuit to make up your own schematics.
It is easy enough.

If you post it I shall have a look to see if I spot any obvious mistakes.
Otherwise I stick to my lessons learned and will no longer post any schematics without testing myself.
And I have no immediate plan for a DAO IV, unlikely this year.

Bear in mind you will need 48V 250mA floating supply or battery plus large enough heatsinks per single ended SEN IV.
Will undoubtedly be a spectacular project.
So don't let me discourage you.
I will be quite interest to see it working.


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Old 30th April 2012, 01:10 PM   #775
gadut is offline gadut  Indonesia
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Interesting design, especially those heatsink where do you buy it? I'm reading first pages, but still many pages to go

I still have around 40pcs 2SK170 from dcb1 project, and I just realize how expensive 2SJ74 so for AD1865, should built ZEN or SEN?
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Old 1st May 2012, 04:59 PM   #776
EUVL is offline EUVL  Europe
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If you have enough 2SK170s. Suggest you build standard SEN.


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Old 2nd May 2012, 07:05 AM   #777
NicMac is offline NicMac  Italy
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Default SEN V18 current draw

I'm testing my new regulated XEN battery supplies for the SEN V18 and I'm looking for an appropriate dummy load. How is the approximate current draw calculated? The sum of the Idss of the FET's?

Cheers,

Nic
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Old 2nd May 2012, 10:22 AM   #778
heb1001 is offline heb1001  China
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I'm testing my new regulated XEN battery supplies for the SEN V18 and I'm looking for an appropriate dummy load. How is the approximate current draw calculated? The sum of the Idss of the FET's?

Cheers,

Nic
I'm working on a battery supply. Have you actually tested that using regulators offers an improvement? What's the benefit?
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Old 2nd May 2012, 11:21 AM   #779
NicMac is offline NicMac  Italy
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Originally Posted by heb1001 View Post
Have you actually tested that using regulators offers an improvement? What's the benefit?
Well - I have to make the regulated supply to compare - don't I
I don't expect anything dramatic as it is sounding so damn good right of the batteries. I had to make the charger circuit anyway and adding in regulation is really just for the fun of it. I doubt it hurts......
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Nic
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Old 2nd May 2012, 04:03 PM   #780
EUVL is offline EUVL  Europe
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> How is the approximate current draw calculated? The sum of the Idss of the FET's?

Yes, sum of Idss of the 2 FETs in parallel.
So about 40mA.


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