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amplificator 100-120w cu irf540&irf9540


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din link-ul tau am gasit Q1-2=BC550C [matched]Q3-4=BC560C [matched]cum pot sa imperechez BC550/560 ptr ca nu stiu(sigur) daca imi va da imperecheati la firmele de specialitate; inca ceva: face referire la text, iar textul e in graca, tu cum ai facut bobina L1 si ce era legat de led?

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din cauza vitezei




aici ai varianta in engleza:

http://users.otenet.gr/~athsam/power_am ... et_eng.htm


tranzistoarele BC trebuie sa aiba aprox acelasi B(beta), Hfe sau cum i-o mai zice

cumperi multe bucati (e cam 1000lei vechi bucata) si masori cu aparatu d masura(acolo unde se masoara tz) si pui in circuit tz cu aprox aceleasi valori


detalii d bobina pe site



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