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Class D Switching Power Amplifiers and Power D/A conversion

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Old 7th May 2012, 07:39 AM   #2741
rubennn is offline rubennn  Denmark
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Quote:
Originally Posted by Saturnus View Post
Pretty easy to measure if there's a blocking diode present. Measure resistance in reverse, ie. from minus to plus. If it's infinite then there's a blocking diode present.
I've tried measuring both with reversed polarity and normal polarity. In both cases I get around 20k Ohm.

I would have guessed that a diode would almost always be in included in retail panels. It's not something I bought off eBay anyway

Anyway, would this diode be suitable?
https://elextra.dk/main.aspx?page=article&artno=H13966
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Wohoo...Boominator 2012
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Old 7th May 2012, 08:56 AM   #2742
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I was planning to build an boominator with 12" HP-12w, but I have no layout. Anyone who can send me some layouts for 12" instead of 10"?

Last edited by booom; 7th May 2012 at 09:00 AM.
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Old 7th May 2012, 10:25 AM   #2743
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The HP12W cannot be used. The parameters dictate a roughly 80 liter minimum cabinet size per side. It would mean it would have to be more than 3 times larger. Also the HP12W is a sub driver that does not sound well over 400-500Hz, so you'd need a midrange driver as well.
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Old 7th May 2012, 01:41 PM   #2744
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I know i have read it before in this thread but cant find it...!
What kind of glue should i use to attach the solar panels on top of the boominator?

It is a metal frame (aluminium?) on the solar panels.
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Old 7th May 2012, 02:09 PM   #2745
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Does anyone know a formular of how many amps a solarpanel with a X number of watt gives? Im looking to buy a 30w panel (i wants a seperate one.. not one on top of the boominator) So i would like to know how much the panel will charge on a fine sunny day at Roskilde (festival)
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Old 7th May 2012, 03:04 PM   #2746
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Originally Posted by HifiBoyDenmark View Post
Does anyone know a formular of how many amps a solarpanel with a X number of watt gives? Im looking to buy a 30w panel (i wants a seperate one.. not one on top of the boominator) So i would like to know how much the panel will charge on a fine sunny day at Roskilde (festival)
I (current) = P (power) / V (voltage)
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Old 7th May 2012, 03:04 PM   #2747
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I know i have read it before in this thread but cant find it...!
What kind of glue should i use to attach the solar panels on top of the boominator?

It is a metal frame (aluminium?) on the solar panels.
Acryllic sealant
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Old 7th May 2012, 05:34 PM   #2748
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Default Yo!

There is a billion pages and since the introduction is 5 years old I was wondering what changes(if any) you would make today.

Some of the pictures on the first page with your instructions, aren't working, so I was wondering if you could upload the page again or something smart?

Because I really want to get started and I guess I really need to start figuring out how to get all the parts ordered soon, if I am going to make it before Roskilde Festival starts.

Best regards,

Audacious.
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Old 7th May 2012, 05:56 PM   #2749
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There's a recap post a couple of pages back by aaroe.
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Old 7th May 2012, 06:09 PM   #2750
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I (current) = P (power) / V (voltage)
okay so with a 30w solarpanel its = 30/12=2,5a? sound quite a lot :b the battery 's limit is 1,75a for recharging, but i guess the chargeregulator can do something about that?
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