Patent issued for Ralph Karsten Class D amp

[dberning]

Ralph Karsten of Atma-Sphere fame was issued a US patent on a Class D amp. The times, they are a changin!

https://pdfpiw.uspto.gov/.piw?Docid=104 ... first+page

David

[KLH007]

Ralph has been posting about his developments in Class D on Agon for a while, his new amp could make a big splash in Class D performance.

[brombo]

Emotiva is selling a class-D amp -

https://emotiva.com/collections/balance ... -amplifier

[David McGown]

Interesting. A tube Class-D amplifier...or at least a tube circlotron output to a Class D front end.

[SoundMods]

Ralph Karsten of Atma-Sphere fame was issued a US patent on a Class D amp. The times, they are a changin!

https://pdfpiw.uspto.gov/.piw?Docid=104 ... first+page

David

My-my. He did a solid-state version of the ancient G.E. Circlotron. An old wheel with new tires.

[David McGown]

I believe the Patent application states the Circlotron can use either solid state devices or tubes. I don't see the circlotron as being the main element, but what is in front of it, or the whole as a combination. Not sure the circlotron output itself is patentable.

David M.

[SoundMods]

I believe the Patent application states the Circlotron can use either solid state devices or tubes. I don't see the circlotron as being the main element, but what is in front of it, or the whole as a combination. Not sure the circlotron output itself is patentable.

David M.

I find the patent process questionable. I've seen patents over the years that should not have been granted. Basically "old wheels" with new names.

[tomp]

When loking at innovation in amplifier technology the grand daddy of them all is Gerald Stanley who worked at Crown for over 50 years. He has over 45 patents. I met him twice at Crown in Indiana and he is not only a genius but also a nice guy who spent loads of time with me explaining amplifier concepts. One of his inventions, the Class I interleaved class D configuration has many advantages over standard class D. I had a paper on it once but can't find it. Here is a link to some very basic info about it on the Crown site.

https://www.crownaudio.com/en/technology

[SoundMods]

When loking at innovation in amplifier technology the grand daddy of them all is Gerald Stanley who worked at Crown for over 50 years. He has over 45 patents. I met him twice at Crown in Indiana and he is not only a genius but also a nice guy who spent loads of time with me explaining amplifier concepts. One of his inventions, the Class I interleaved class D configuration has many advantages over standard class D. I had a paper on it once but can't find it. Here is a link to some very basic info about it on the Crown site.

https://www.crownaudio.com/en/technology

Like I said.