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Old 15th January 2011, 01:58 AM   #3351
Bigun is online now Bigun  Canada
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Originally Posted by MJL21193 View Post
I read on the Internet (here actually)


you get 10 out of 10 for that one !
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Old 15th January 2011, 02:04 AM   #3352
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you get 10 out of 10 for that one !
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Old 15th January 2011, 07:09 AM   #3353
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To all,

Please have a look at: US Patent 7652531
Those pirates have stolen my baby!

@ raven1985, thx for the info.

Cheers,
E.
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Old 15th January 2011, 07:27 AM   #3354
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Your baby was stolen 2 years back

They baptized it recently on 26 Jan 10............
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Old 15th January 2011, 09:21 AM   #3355
godfrey is offline godfrey  South Africa
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Originally Posted by Edmond Stuart View Post
Please have a look at: US Patent 7652531
Those pirates have stolen my baby!
As far as I can tell, the US patent office will grant anything. I understand that the invention is not required to to be useful or to actually work, but apparently they don't even bother to check that the idea is new and not easily derived from prior art.

On a lighter note, have a look at some of the "preferred embodiments" in this patent.

Figure 11 is just TMC applied to that Slone topology with the undefined bias.
In figure 14 they're not even giving the poor thing a fair chance. Burn baby, burn!
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File Type: gif 14.gif (26.1 KB, 345 views)

Last edited by godfrey; 15th January 2011 at 09:41 AM.
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Old 15th January 2011, 09:28 AM   #3356
WuYit is offline WuYit  Sweden
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An unexpected reinvention of the (low cost) two-pole filter served with a lot of rubbish talk.
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Old 15th January 2011, 10:07 AM   #3357
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Quote:
Originally Posted by Edmond Stuart View Post
To all,

Please have a look at: US Patent 7652531
Those pirates have stolen my baby!

@ raven1985, thx for the info.

Cheers,
E.

At least he correctly calls the second stage a transimpedence stage (TIS) instead of a "VAS".

Last edited by michaelkiwanuka; 15th January 2011 at 10:14 AM.
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Old 15th January 2011, 10:12 AM   #3358
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Originally Posted by Bob Cordell View Post
Hi Mike,

I also think there is no "must" about it, but TPC and TMC do not each necessarily prefer the same relationship between the capacitors.
I reckon any ratio of capacitors can be made to work optimally well in both cases. I do not subscribe to the view that there is an "optimal ratio" of capacitors for TPC or TMC.
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Old 15th January 2011, 10:13 AM   #3359
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Quote:
Originally Posted by Edmond Stuart View Post
To all,

Please have a look at: US Patent 7652531
Those pirates have stolen my baby!

@ raven1985, thx for the info.

Cheers,
E.
Your baby? Are you sure?
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Old 15th January 2011, 10:21 AM   #3360
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Originally Posted by Bob Cordell View Post
Moreover, there is no must that the capacitors be the same in both approaches for a fair comparison, or to achieve comparable total loop gain around the output stage.

They have to be the same for identical forward path unity gain frequency, which is the primary prerequisite for an apples and apples comparison.
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