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"Hi-Fi svět" federmann.cz :: Zobrazit téma - Topologie Federmann opět hýbe internetem?
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Topologie Federmann opět hýbe internetem?
http://www.forum.federmann.cz/viewtopic.php?f=42&t=1884
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Autor:  Federmann [ ned 24. čer 2018 17:39:55 ]
Předmět příspěvku:  Topologie Federmann opět hýbe internetem?



Hlupáčci, zesilovač se zesílením otevřené smyčky přes 200dB nenašli, tak se smějí alespoň vlastní nevědomosti. :mrgreen:

Autor:  Federmann [ sob 30. čer 2018 8:28:55 ]
Předmět příspěvku:  Re: Topologie Federmann opět hýbe internetem?

Dan.png

Tématu stále moc nerozumí, dokonce nerozumí ani výukovému modelu zesilovače, zjevně téma a kdoví co ještě jiného udržet vůbec nedokážou.

Před mnoha lety když jsem tam byl ještě účasten, mohli mé příspěvky alespoň moderovat, nebo dokonce pod mým jménem psát, ale když tam nejsem a možnost takové dehonestace mé maličkosti je jim upřena, :mrgreen:

rvx73.png

Autor:  Federmann [ úte 03. črc 2018 11:30:46 ]
Předmět příspěvku:  Re: Topologie Federmann opět hýbe internetem?

Pozoruhodné prázdninové pomateni mysli? :mrgreen:

Danh.png
odrbanek1.png
Danha.png

Podíváme-li se na průběh Daněčkem simulované charakteristiky, pak na 1kHz atakuje zesílení celého 100tis, což odpovídá pouhopouhým 100dB, dostat se na 230dB při 1kHz je opravdu nedosažitelné, obzvláště s OZ který končí na 3MHz a s koncovými tranzistory končícími ještě níže :mrgreen: :mrgreen: :mrgreen:

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I s OZ do 50 MHz a tranzistory do 200Mhz, při zcela odlišných pracovních bodech je zesílení na 1kHz pod pouhých 160dB, ale stále o 60dB výše než Daněčkův sen.

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