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Thread: Filtru 22 khz?

  1. #1
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    Default Filtru 22 khz?

    Aveti o solutie pentru blocarea semnalului de 22 khz de la un ampli IF ?

  2. #2
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    Buna, esti sigur ca doresti sa blochezi acest semnal, intreb deoarece nam avut nici o data astfel de caz, ba din contra am avut necesitatea de restabilire a impulsurilor de 22 KHz prin adaugarea in intreruperea alimentarii LNBului a unei scheme de generator. Insa pentru cazul tau la fel tre sa faci o intrerupere de alimentare la care tre sa adaugi niste cascade cu capacitati si inductante de valori mari, contur LC. Cam asa vad solutia ta. Bafta
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    Multumesc de raspuns.
    Da, vreau sa blochez tonul. Amplificatorul vine de fabrica cu 14V si 22khz fara switch on/off. Am nevoie de el intr-o instalatie IF in banda VL si ma obliga sa pun un lnb cuatro daca nu pot indeparta tonul. Ma gandeam ca altcineva a avut aceeasi problema si ca exista un filtru care sa faca asta.

  4. #4
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    Quote Originally Posted by bajomedia View Post
    Multumesc de raspuns.
    Da, vreau sa blochez tonul. Amplificatorul vine de fabrica cu 14V si 22khz fara switch on/off. Am nevoie de el intr-o instalatie IF in banda VL si ma obliga sa pun un lnb cuatro daca nu pot indeparta tonul. Ma gandeam ca altcineva a avut aceeasi problema si ca exista un filtru care sa faca asta.
    Un lnb quatro iti dau eu ,si asa il tin degeaba ,am 2 bucati

 

 

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