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Old 29th March 2003, 06:00 AM   #11
Ford_V6 is offline Ford_V6  
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Thanks for help.
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Old 31st March 2003, 06:47 PM   #12
djdan is offline djdan  
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Salut Ford V_6 ,

Este vorba de un modul de putere cumparat de la Adelaida - Craiova , bazat pe TDA7250 ?

Daca da , sa stii ca au vicii de proiectare iar tranzistoarele nu rezista in sarcina la mai mult de 60 - 70Wrms in sarcina.

Toate aceste module au aceasta problema privind deconectarea la suprasarcina. Se mai poate ridica pragul de MUTE , dar , in orice caz nu merita efortul .

Daca totusi vrei sa experimentezi , incearca MJ11015/11016.
Eu am reusit sa ajung la 180W rms la +/- 48v masurat la 1% THD.
Oricum efortul nu a meritat banii si timpul pierdut.

Exista alte scheme incomparabil mai bune .

Salut !
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Old 2nd April 2003, 12:27 PM   #13
Ford_V6 is offline Ford_V6  
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Join Date: Mar 2003
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Nu e vorba de kiturile de la adelaida. Este vorba de un amplificator realizat de mine dupa o schema luata de pe net.

Atasez schema dupa care am lucrat. Poate i-mi mai dai o sugestie ( eventual cu ridicarea pragului de mute la TIP-uri)
Poate sti si ceva despre filtrele de iesire.

Merci mult,
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