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Old 19th January 2013, 09:20 PM   #3751
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If I can't fit the heatsink for SSHV2 I will use only your CCS & VR150 tubes

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Last edited by merlin el mago; 19th January 2013 at 09:23 PM.
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Old 19th January 2013, 09:28 PM   #3752
Salas is offline Salas  Greece
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Noisier, more Zo, but musical enough.
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Old 19th January 2013, 09:32 PM   #3753
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I read VR150 datasheet and said the minimum voltage operation is 180-185V, do you think will operate with 176,25VDC?
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Old 19th January 2013, 09:36 PM   #3754
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Quote:
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The sinked CCS Mosfet will burn about 1.5W in that case (with ~30mA setting). So a small one like we use for not too hot LM317 situations will do the job.
That's a very good news because I prefer to use all the SSHV2 in my #26 preamp
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Old 19th January 2013, 09:36 PM   #3755
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Quote:
Originally Posted by merlin el mago View Post
I read VR150 datasheet and said the minimum voltage operation is 180-185V, do you think will operate with 176,25VDC?
Not sure, I have checked some of those only above 200V in the past. Better ask the #26 guys.
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Old 19th January 2013, 09:39 PM   #3756
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Quote:
Originally Posted by merlin el mago View Post
That's a very good news because I prefer to use all the SSHV2 in my #26 preamp
But the output Mosfet will burn 3.5W so its sink better be 3x the size of the CCS one.
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Old 19th January 2013, 10:11 PM   #3757
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Can be enough this one?

Compre Disipadores Disipador de calor,TO220 3.5degC/W AAVID THERMALLOY KL-100-B en RS Online y lo recibir en 24/48 horas.
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Old 19th January 2013, 10:46 PM   #3758
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Yep.
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Old 19th January 2013, 10:51 PM   #3759
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This one 3.7K/W also?

Compre Disipadores Disipador de calor,50x100x28mm KL/B/100 AAVID THERMALLOY KL/B/100 en RS Online y lo recibir en 24/48 horas.

N.B. I have this one on hand.
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Old 19th January 2013, 11:05 PM   #3760
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Both will do at the CCS and Vo and load you described. They look the same.
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