why this class D power supply no high voltage side electronic cap?

greenamp · 03:02 PM

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

phase_accurate · 18th January 2012, 10:15 AM

.... 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.

greenamp · 18th January 2012, 10:27 AM

Quote:

Originally Posted by phase_accurate

.... 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.

greenamp · 18th January 2012, 10:59 AM

Quote:

Originally Posted by greenamp

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

darkfenriz · 18th January 2012, 12:32 PM

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.

greenamp · 03:10 PM

Quote:

Originally Posted by darkfenriz

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?

GloBug · 18th January 2012, 11:55 PM

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.

greenamp · 19th January 2012, 02:41 AM

Very good place for technology, no Hilter .suggest modulator forbid political issue.

michaelkkk · 19th January 2012, 06:31 AM

Quote:

Originally Posted by greenamp

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?

ChocoHolic · 20th January 2012, 11:18 PM

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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18th January 2012, 10:15 AM	#2
phase_accurate diyAudio Member Join Date: May 2002 Location: Switzerland	.... 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.

18th January 2012, 12:32 PM	#5
darkfenriz diyAudio Member Join Date: Jun 2004 Location: Warsaw	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.

18th January 2012, 11:55 PM	#7
GloBug Banned Join Date: Jun 2011	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.

19th January 2012, 02:41 AM	#8
greenamp diyAudio Member Join Date: Jan 2010	Very good place for technology, no Hilter .suggest modulator forbid political issue.

20th January 2012, 11:18 PM	#10
ChocoHolic diyAudio Member Join Date: Dec 2003 Location: Munich	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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