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Old 13th August 2013, 12:00 PM   #251
dadod is offline dadod  Croatia
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Originally Posted by RNMarsh View Post
What can you guys do with this? SIM it and add what is needed for output stage etc.

It uses cancellation technique to reduce distortion. [I'm into cancellation circuits now]

Then bend it into push-pull input etc.... .


Attachment 364749
I am trying to simulate the schematic from the patent, but patent description, mildly said, is confusion. What means “a reflected base current”?
The output stage there, in my opinion is just to hide the patent real thing. Why patent description should be so cryptic.
I tried the simulation but was staked. Does anyone have an idea how it actually should work? what resistor values to use?
Whole patent description attached.
BR Damir
Attached Files
File Type: pdf cancelation circuit patnum US20090256634A1.pdf (45.1 KB, 149 views)
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Old 19th August 2013, 08:06 PM   #252
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I've simulated it but there seemed to be instability caused by positive feedback and I couldn't get it stable.
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Old 12th October 2013, 03:52 AM   #253
cast is offline cast  China
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Old 12th October 2013, 04:16 PM   #254
dadod is offline dadod  Croatia
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Originally Posted by cast View Post
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why have you sent this???
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