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500 Circuitos Prácticos. Parte 1-FREELIBROS.ORG

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A ? 2

WWW'

2 7 0 / C

RECEPTOR DE 2

TRANSISTORES

D t

CH.&.P.

f W -

I 3 . 3 ^

1 N 6 0

COM BINACION REGENERATIVO

Y REFLEJO

L1: bobina de anten a sobre núcleo de

ferrite.

AURICULARES: 7 KO. V a lo re s m enores reducirán

la se n sib ilid ad .

El resistor en serie con el potencióm e­

tro R3 debe tener 1

KO.

AMPLIFICADOR PARA AYUDA AUDITIVA

BATERIA: 1,5 V O LT S ; M ICROFONO: M A G N E T IC O DE 1 Kit

C A P A C IT O R E S :

C1 = 4 j.tF, electrolítico, 3 volts

C2 = 10 nF,

C3 = 4 pF,

C 4 = 10 nF,

C 5 = 1 fiF,

RESISTO R ES:

R1 = 12 KO; 1/8 W att

R2 = 6,8 KO; 1/8 W att

R3, R4, R5 = 1,5 KO; 1/8 W att

R6 = potenc. 0,1 M O ; 1/8 W.

R7 = 15 KO; 1 /8 W .

R8 = 6,8 KO; 1/8 W .

R9 = 1,2 KO; 1/8 W .

R IO = 1,5 KO; 1/8 W .

R l l = 5 6 KO; 1/8 W .

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