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Old 12th November 2003, 08:54 PM   #1
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Default 200w Aleph-X equals Aleph 1.2

I started the following thread that really went nowhere:

Scaling Aleph-X up to 200w

What I did conclude though was that "for all intents and purposes" a 200w Aleph-X is the equivalent of an Aleph 1.2 for the purposes of power supplies and heatsinks. I don't see the need to complicate things more than that.

Comments anyone?

Regards,
Dan
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Old 12th November 2003, 11:23 PM   #2
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It will generally have 1/2 the rail voltages, and twice the
current draw, otherwise the amount of hardware tends
to be about the same. The XA200 also has twice as much
capacitance, in an RCLC filter set.

And of course, a blue light on the meter.
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Old 13th November 2003, 12:09 AM   #3
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Following Nelson's previous 'advice' I'm assuming that'll whether it's an Aleph 1.2 or a 200W Aleph-X. The beg, borrow, and or otherwise apply as much heatsink as you can find rule will apply!

The lower rail voltages may make it easier to find large doses of capacitance 'lying around'. I still have 28 of the 68,000uf Stubby's leftover from my Aleph 5 project. As soon as I complete my Aleph ala Kristijan's board and power supply design I'll see how the CLC works and go from there.

Regards,
Dan

P.S. Thanks for the input Nelson.
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Old 13th November 2003, 01:01 AM   #4
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Following Nelson's previous 'advice' I'm assuming that'll whether it's an Aleph 1.2 or a 200W Aleph-X. The beg, borrow, and or otherwise apply as much heatsink as you can find rule will apply!

The lower rail voltages may make it easier to find large doses of capacitance 'lying around'. I still have 28 of the 68,000uf Stubby's leftover from my Aleph 5 project. As soon as I complete my Aleph ala Kristijan's board and power supply design I'll see how the CLC works and go from there.

Regards,
Dan

P.S. Thanks for the input Nelson.
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Old 13th November 2003, 02:06 AM   #5
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You're welcome, Dan.
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Old 13th November 2003, 10:24 PM   #6
jrsun is offline jrsun  United States
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Dan,

If 68,000uF caps are used in pi CLC filter, what values of
bypass capacitor and indcctor should be used for Alpeh 2 PSU ? still 4.7 uF and 2.2 mH ? Thanks !

Rus
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Old 14th November 2003, 01:59 AM   #7
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I being a 'novice' will for the most part follow other people's designs (i.e. Krisitjan's) until I get alittle more experience under my belt. That's the best answer I can offer at this time.

Regards,
Dan
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Old 14th November 2003, 02:05 AM   #8
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Back to the Aleph-X 200w for a second.... after alittle preliminary research I can see that 1.2-1.5kva 28v Plitron toroid would be expensive. Probably a custom job. Anyone care for a quote?

Regards,
Dan
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Old 14th November 2003, 02:45 AM   #9
jrsun is offline jrsun  United States
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1.5kva is one of the standard model. voltage change does not counted as custom job as I know. Magnetic shelding might be expensive or n/a as told.
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Old 14th November 2003, 09:52 PM   #10
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After finishing my Aleph 5 in the near future. I may be enticed into starting to prototype a 200W Aleph-X power supply. It looks like the 1500VA Plitron toroid will be about $200CAN/$155USD. I think I have enough surplus capacitance and heatsinks to mock up a single monoblock. Anyone interested this particular experiement?

Regards,
Dan
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