Does Kronos use Active or Passive PFC in its power supply?

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evimidiman
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Does Kronos use Active or Passive PFC in its power supply?

Post by evimidiman »

Hi,

Since the Kronos streams from the SSD whenever you play its pianos, I would think buying an Uninterruptible Power Supply (UPS) would be crucial to the stability of using this instrument long-term to avoid brownouts, sags, etc.

Does anybody know if the Kronos uses Active or Passive PFC in its power supply?

That makes a difference on what type of UPS to use.

Thanks in advance,

Steve Cooper
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McHale
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Post by McHale »

I don't know the answer to your question but would you be able to figure it out with a detailed picture of the inside of the power supply?

-Mc
Current Korg Gear: KRONOS 88 (4GB), M50-73 (PS mod), RADIAS-73, Electribe MX, Triton Pro (MOSS, SCSI, CF, 64MB RAM), SQ-64, DVP-1, MEX-8000, MR-1, KAOSSilator, nanoKey, nanoKontrol, 3x nanoPad 2, 3x DS1H, 7x PS1, FC7 (yes Korg, NOT Yamaha).
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Synthee
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Post by Synthee »

McHale wrote:I don't know the answer to your question but would you be able to figure it out with a detailed picture of the inside of the power supply?

-Mc
Here you can see an picture of the power supply:
http://www.korgforums.com/forum/phpBB2/ ... &start=300
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Derek Cook
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Re: Does Kronos use Active or Passive PFC in its power suppl

Post by Derek Cook »

evimidiman wrote:Hi,

Since the Kronos streams from the SSD whenever you play its pianos, I would think buying an Uninterruptible Power Supply (UPS) would be crucial to the stability of using this instrument long-term to avoid brownouts, sags, etc.
It's also crucial to avoid the 2 minute boot time on stage if the power glithed such that it crashes the Kronos, your band mates are carrying on and you look like a lemon! :)
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evimidiman
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Post by evimidiman »

Synthee wrote:
McHale wrote:I don't know the answer to your question but would you be able to figure it out with a detailed picture of the inside of the power supply?

-Mc
Here you can see an picture of the power supply:
http://www.korgforums.com/forum/phpBB2/ ... &start=300
I wish I was smart enough to be able to look at and know what type of circuit it is, but I'm not ;) Perhaps somebody at Korg can tell us, because Active or Passive PFC (Power Factor Conversion) is important since Active REQUIRES an UPS that can deliver a pure sine wave. Older and cheaper UPS's cannot do that and they can also damage any unit that is plugged into it when it delivers backup power.
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evimidiman
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Re: Does Kronos use Active or Passive PFC in its power suppl

Post by evimidiman »

Derek Cook wrote:
evimidiman wrote:Hi,

Since the Kronos streams from the SSD whenever you play its pianos, I would think buying an Uninterruptible Power Supply (UPS) would be crucial to the stability of using this instrument long-term to avoid brownouts, sags, etc.
It's also crucial to avoid the 2 minute boot time on stage if the power glithed such that it crashes the Kronos, your band mates are carrying on and you look like a lemon! :)
So true!!! I should have mentioned that I have the newest Kronos 2, 61 key, so I don't know if they have had different power supplies in the 3 versions of Kronos hardware...
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