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controller / filtru subwoofer deosebit + auto switch

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salut baieti,

In cautarile mele de o schema de cuplare / decuplare amplificator functie de semnalul de intrare, am gasit pe net o schema super, care face asa ceva si in plus are si filtru subwoofer, completa.

Designer -  un anume Lars Clausen.

 

Am si eu o intrebare:

 - pentru ca nu prea inteleg partea de auto switch, vreau sa intreb:  ce pot cupla la final, adica la pinii lui BC548 ? (zice ceva de dioda Zener si -60V, nu stiu ce-i cu aceste specificatii )

Eu vreau sa activez / dezactivez un standby de la amplificator TDA 7294. Am 2 pini care trebuie cuplati, iar curentul este foarte mic intre cei 2 pini.

 

1. Se potriveste schema din atasament pentru ce vreau eu ?

2. Este oare semnalul "monitorizat", iar la depasirea unui anumit prag la intrare (mV), cupleaza / decupleaza tranzistorul BC548 ?

3. Are functie de delay ? Adica activarea sa se faca imediat, iar dezactivarea sa imi intarzie cu cateva minute.

 

Merci.

 

 

 

filtru + sistem automatic de activare - Lars Clausen.pdf

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