As dori o schema sau idei pentru realizarea unui amplif 10W

[bodo_b]

As dori sa construiesc un amplif. in clasa AB care sa se alimenteze la +/- 15V. Nu imi trebuie putere mare. 10W sunt suficienti. MultumescL.EAm gasit o schema dar nu stiu daca este in clasa AB. Sa imi spuna si mie cineva care se pricepe.Parts:P1_________________22K Log.Potentiometer (Dual-gang for stereo)P2________________100K Log.Potentiometer (Dual-gang for stereo)R1________________820R 1/4W ResistorR2,R4,R8____________4K7 1/4W ResistorsR3________________500R 1/2W Trimmer CermetR5_________________82K 1/4W ResistorR6,R7______________47K 1/4W ResistorsR9_________________10R 1/2W ResistorR10__________________R22 4W Resistor (wirewound)C1,C8_____________470nF 63V Polyester CapacitorC2,C5_____________100?F 25V Electrolytic CapacitorsC3,C4_____________470?F 25V Electrolytic CapacitorsC6_________________47pF 63V Ceramic or Polystyrene CapacitorC7_________________10nF 63V Polyester CapacitorC9________________100nF 63V Polyester CapacitorD1______________1N4148 75V 150mA DiodeIC1_____________NE5532 Low noise Dual Op-ampQ1_______________BC547B 45V 100mA NPN TransistorQ2_______________BC557B 45V 100mA PNP TransistorQ3_______________TIP42A 60V 6A PNP TransistorQ4_______________TIP41A 60V 6A NPN TransistorJ1__________________RCA audio input socketSchema aici :

[Sharky]

Peste R10 se pune o bobina de cativa uH.Schema e cam simplista si poate fi mult imbunatatita.Eu as alege altceva.Cred ca lm3886 merge alimentat si la asa tensiune joasa si e mai usor de implementat.

[zal]

Sau oricare din TDA2030, 2040, 2050...

[Rabulea Sergiu]

Sau schema asta:[attachment=0]AMPLIF CU TIP -VEL.pdf[/attachment]Folosesti doar partea de amplificator de putere.

[harry]

Tda 1557qviewtopic.php?f=59&t=29371