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Old 13th March 2004, 12:35 PM   #191
thanh is offline thanh  Viet Nam
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i want to have a amp which i can not regconize its sound or human voice!Bernhard!Can you understand my feeling?
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Old 13th March 2004, 07:26 PM   #192
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Talking Thanks for keeping my thread alive...

Originally posted by thanh


(Vo+) - (Vo-)=2rd 4rd is cancel but 3rd 5rd increase a factor of 2
where VBeo=Vbe bias
I can't follow that.

My amp plans have a break because I built the DAC first.

But I have new ideas.

If you have time, why don't you just built it, all that I have posted runs ok in the sim.

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Old 1st April 2004, 05:40 AM   #193
thanh is offline thanh  Viet Nam
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This is my circuit.It is so slow!ORCAD 9.2 is quite stupid.It can't say to me how 2nd and 3rd are.I'm very sad because my amp still has got distortion.I don't like class A but it can give me something.I love feedforward but i don't understand about it much!
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Old 27th June 2008, 10:26 AM   #194
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Originally posted by Bernhard
Here the schematic of the simulated circuit.
2 op amps might be avoided and gain is still 1 for simplicity.

Click the image to open in full size.

Any progress?
/Per-Anders (my first name) or P-A as my friends call me
PA03 LM4780 amplifier group buy, SIGN UP HERE for the group buy 0 boards left. 118 paid.
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