This circuit is from an old publication by A. Fanzeres. To use a unit, it is sometimes necessary to insert a preamplifier between it and the main amplifier. The circuit we present has a RIAA correction curve which will ensure a very adequate reproduction of discs, with a RIAA curve that is practically universal today.
LIST OF COMPONENTS
Q1 - BC548
Q2 - BC558
R1 - 82 k ohms
R2 - 820 ohms
R3 - 4.7k ohms
R4 - 39 k ohms
R5 - 150 k ohms
R6 - 220 k ohms
R7 - 12 k ohms
R8 - 10 K ohms
R9 - 1k ohms
R10 - 1.2 k ohms
C1 - 10 uF x 15 V.
C2 - 50 uF x 10 V
C3 - 33 nF
C4 - 6n8
C5 - 47 uF x 25 V
C6 - 10 uF
C7 - 100 uF x 15 V
| Clique na imagem para ampliar |
