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Adaptare CAF


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Pentru CAF trebuie sa controlezi suplimentar frecventa oscilatorului cu o tensiune de eroare data de detectorul de faza, concret, peste bobina oscilatorului pui o pereche de varicap-uri cu coeficient de variatie a capacitatii mic (UIF) reglate de un amplificator de c.c. tranzistor sau ICTreburile sint un pic mai complicate fiindca trebuieste aliniata din nou frecventa oscilatorului,mai sint si altele depinde ce aparatura si experienta ai ...

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Daca aveti o schema care are asa ceva mi-ar prinde foarte bine.Nu prea conteaza ca pun un varcap in plus la oscilator ca din L5 se aduce din nou frecventa OL la valoarea care trebuie. Experienta in AF si in tras in banda radiouri am.Multumesc.

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schema de bloc uus cu caf se gasea acum ceva vreme pe acest forum. poti sa incerci pe google un search cu "schema radio bucur" ( bucur 1 sau bucur 6).oricum, daca te hotarasti sa faci un bloc uus serios, incearca una din variantele: onkyo 9900 sau cea a lui john sequerra din marantz 10B.multumesc!

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