Aparatul este destinat pentru amplificarea joaselor frecvente provenite de la:
— receptoare cu dioda;
— receptoare cu tranzistoare;
— picup;
— chitara electrica;
— alte scopuri didactice.
Aspectul exterior al amplificatorului permite intelegerea accesibila functionarii unui amplificator cu tuburi.
Alimentarea aparatului se face de la o retea de 220 V curent alternativ. Curentul continuu necesar functionarii se obtine cu ajutorul unui transformator de retea, un tub electronic EZ 11 si un condensator electrolitic de 50 MF.
Amplificarea se realizeaza cu ajutorul tuburilor ECC 85 si EL 3
PUNEREA IN FUNCTUNE
1. Se conecteaza Ia intrarea aparatului sursa de joasa frecventa (ex. receptor cu dioda);
2. Se introduce cablul de legatura in sursa de curent alternativ de 220 V;
3. Se roteste butonul potentiometrului spre dreapta pentru a inchide circuitul;
4. Se regleaza nivelul sonor cu ajutorul potentiometrului. NOTA: Schema de principiu se afla pe panoul frontal al aparatului.
Aparatul poate fi fixat pe perete.
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