Enzo B. - enzo_br@virgilio.it - www.geocities.com/b94_1999

   Data Storage Box   Rev.00 - Bill Of Materials

  Item    Q.ty    Reference                Part                   
__________________________________________________________________

    1      17    C1,C4,C11,C12,C13,C14,    100nF                  
                 C15,C16,C17,C18,C19,C20,
                 C21,C22,C23,C24,C25

    2       2    *C2,*C3                   9pF NP0

    3       2    C5,C7                     1000uF 35V

    4       2    C6,C8                     100uF 25V

    5       2    C9,C10                    10uF 25V

    6       2    D1,D2                     1N5821
                                           (RS: 183-7689)

    7       1    J1                        Connettore IDC 40 pin

    8       1    J2                        Connettore per alim. HD

    9       1    J3                        Strip 5 poli passo 2.54mm

   10       1    J4                        Presa USB tipo B
                                           (RS: 324-8356)

   11       1    J5                        Presa jack diametro 6mm

   12       1    J6                        Strip 3 poli passo 2.54mm con jumper

   13       2    L1,L2                     Induttanza radiale 100uH 3A (almeno 1A)
                                           (RS: 228-501)

   14       2    L3,L4                     Induttanza assiale 1uH
                                           (RS: 191-0380)

   15       1    Q1                        BC547                  

   16       3    R1,R9,R11                 1K                     

   17       2    R2,R16                    62K                    

   18       1    *R3                       470                    

   19       4    R4,R5,R6,R7               Se si usano LM2576T-5.0 e LM2576T-12 :
                                           R4, R6 : 0 ohm (ponticello)
                                           R5, R7 : non montare

   20       1    R8                        9.1K                   

   21       1    R10                       5.6K                   

   22       2    R12,R13                   36.1 (oppure 39 ohm)

   23       3    R14,R17,R18               1.5K                   

   24       1    R15                       39K                    

   25      23    R19,R20,R21,R22,R23,R24,  33                     
                 R25,R26,R27,R28,R29,R30,
                 R31,R32,R33,R34,R35,R36,
                 R37,R38,R39,R40,R41

   26       1    R42                       82                     

   27       3    R43,R44,R45               22                     

   28       3    R46,R47,R48               330                    

   29       1    R49                       220                    

   30       1    *R50                      100                    

   31       1    R51                       10K                    

   32       1    R52                       22K                    

   33       1    U1                        ISD300A1               

   34       1    U2                        24LC02 (programmata) su zoccolo

   35       1    *U3                       Oscillatore IQXO350
                                           (RS: 316-6816)

   36       1    U4                        LM1117T-3.3
                                           (RS: 349-4717)

   37       2    U5,U6                     U5 : LM2576T-5.0 su dissipatore
                                           U6 : LM2576T-12 su dissipatore
                                           (dissipatore RS: 234-2306)

   38       1    *X1                       Quarzo 30MHz


* Montare R3, U3 oppure C2, C3, X1, R50.

Tutte le resistenze sono da 0.25W .
