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2.1 Amplifier With TDA7294 and LM1875

2.1 Amplifier With TDA7294 and LM1875

Sudah lama pengin bikin 2.1 Amp yang simpel. Baru sempet bikin layoutnya.

Supply kedua chip jadi satu, begitu pula dengan supply opamp untuk rangkaian LPF nya. Karena kebutuhan voltase dan arus juga beda, saya split supply buat LM1875 cukup dengan resistor sebagai current limiter dan zener sebagai voltage limiter. Begitu juga dengan supply op ampnya, namun ditambah regulator LM78/79xx series untuk peregulasian yang lebih baik. Voltase dari trafo disarankan 25VAC dengan arus trafo 10A. Elko Supply menggunakan 4×10.000uF/50V, lebih besar lebih baik biar sub gak kedodoran. 

UPDATE !!!
Silahkan dicoba, kalo ada masalah atau saran untuk perbaikan design hubungi saya . 



Download format pdf nya DISINI
Sudah saya uji bagian subwoofernya (TDA7294 & LPF nya), untuk satelitnya tidak saya uji karena tidak ada perubahan diversi sebelumnya (versi sebelumnya, satelit OK, Subwoofer ada yang kebalik).
Karena mata bor patah, saya pasang sebagian komponen dibawah, toh cuma buat nguji.

Salam nyolderrrrr…







 

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