why this class D power supply no high voltage side electronic cap? - diyAudio
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Old 18th January 2012, 10:05 AM   #1
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Default why this class D power supply no high voltage side electronic cap?

We find this class D amp no high side EC, maybe another inovation. no output net circuit, THD good indeed?is it stable?if good , we will buy some for our wooden line
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Last edited by greenamp; 18th January 2012 at 03:02 PM.
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Old 18th January 2012, 10:15 AM   #2
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.... and maybe this innovation will also get copied in far-east soon ?!? ;-)

Regards

Charles

P.S. You can of course do such things - conventional PSU only have electrolytics on the secondary also ! I could imagine that the result could be quite good when combined with a clever PFC topology.
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Old 18th January 2012, 10:27 AM   #3
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Originally Posted by phase_accurate View Post
.... and maybe this innovation will also get copied in far-east soon ?!? ;-)

Regards

Charles

P.S. You can of course do such things - conventional PSU only have electrolytics on the secondary also ! I could imagine that the result could be quite good when combined with a clever PFC topology.
Does it worth coping,no high side EC, no output net circuit,we don't know limiter inside or not.if like electronic transformer circuit(likr irs2161 etc),paste circuit here for sharing enough.no other value. we want pro amp for assembling. if it is manufacture in China ,cost will lower.
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Old 18th January 2012, 10:59 AM   #4
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Originally Posted by greenamp View Post
Does it worth coping,no high side EC, no output net circuit,we don't know limiter inside or not.if like electronic transformer circuit(likr irs2161 etc),paste circuit here for sharing enough.no other value. we want pro amp for assembling. if it is manufacture in China ,cost will lower.
ir2161 datasheet:http://www.irf.com/product-info/data...ata/ir2161.pdf
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Old 18th January 2012, 12:32 PM   #5
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Most probably this is a so-called single stage PFC. Technically it is flyback converter modulated so that input current closely follows input voltage.
Acceptable for low power, low cost applications, which can live with a very loose regulation but need high power factor anyway.
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Old 18th January 2012, 03:06 PM   #6
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Originally Posted by darkfenriz View Post
Most probably this is a so-called single stage PFC. Technically it is flyback converter modulated so that input current closely follows input voltage.
Acceptable for low power, low cost applications, which can live with a very loose regulation but need high power factor anyway.
Maybe like behringer powered mixer,THD +N good or not?

Last edited by greenamp; 18th January 2012 at 03:10 PM.
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Old 18th January 2012, 11:55 PM   #7
GloBug is offline GloBug  Canada
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Why don't the Chinese figure it out for themselves?

It's a shame to see a nice DIY site being used as a research and development department for communist's, that will eventually use slave labour to make a cheesy inferior product, which you will then try to sell back to us.

Boycott.

P.S. Thanks for ratting me out.

Ban me, I don't want to be member of a site that gets censored for stating facts, every word I said was true. Why are you protecting them? Freedom of speech.

This reminds me an awful lot like SOPA.
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Old 19th January 2012, 02:41 AM   #8
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Very good place for technology, no Hilter .suggest modulator forbid political issue.
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Old 19th January 2012, 06:31 AM   #9
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Originally Posted by greenamp View Post
Maybe like behringer powered mixer,THD +N good or not?
could u google BEHRINGER+PMH5000+SCHEMATICS+SMPS and tell me what you think of it?
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Old 20th January 2012, 11:18 PM   #10
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Just visit
Pascal - High Power Pro Audio OEM Amplifier Modules
Click 'contact us' and ask for urgent copying support regarding the S-PRO2.
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