SFERICS MONITOR Parts List      

  Component         Description             Digi-key #      
C1,2,24        1800 pfd 5% 100V polyester    P4776-ND
C7,8,20,21     180 pfd 10% 50V polyester     P4573-ND
C3,4,5,10,12,  0.1 mfd 5% 50V polyester      P4593-ND
  13,14,15,18,19 
  23,26,27,30,34,35
C11,31,32,     22 mfd 25V 20% tantalum       P2051-ND
  33,36
C6,28,29       15 pfd 10% 50V ceramic        P4014A-ND
C9,16,17,22,   4700 pfd 5% 50V polyester     P4559-ND
  25             Matched pair 16-17  

D1,2,3,4,5,6,  1N4148 signal diode           1N4148DICT-ND
  7,8,9,10,11   
D12,13,14,     LED red                       P363-ND
  15,16        or green                      P364-ND

L1,2,3         123-177 mh. pot core          NV243 Fair Radio, Lima,OH

Q1             2N3904                        2N3904-ND
Q2             2N3906                        2N2906-ND
                                             
R1,2,19,22,33, 100 K 5% 1/4W                 100KQBK_ND
  34,39,40,43    Matched pair 39-40      
R3,7,21,24,25  10 K 5% 1/4W                  10KQBK-ND
  26,27,28,29,   Matched pair 21-24, 25-27,
  30,52,53,54,  26-28, 29-30, 52-53
  60,61,62,63,64                    
R5,9,20,23,    1 K 5% 1/4W                   1.0KQBK-ND
  46,65,71       Matched pair 5-6, 20-23 
R6,10,17,56,   470  5% 1/4W                  470QBK-ND
  57,58,59,60
R13,35,48,     4.3 K 5% 1/4W                 4.3KQBK-ND
  69             13,35 target value 4.17 K
R14,15,16,36,  8.2 K 5% 1/4W                 8.2KQBK-ND
  37,38          14,36 target value 8.34 K
R18,70,72,73   100 5% 1/4W                   100QBK-ND
R11,12,42      51 K 5% 1/4W                  51KQBK-ND
R4,8,31,32,49, 22 K 5% 1/4W                  22KQBK-ND
  50,51,66,67,68  Match pair 4-8
R41            300 5% 1/4W                   300QBK-ND
R44            200 K 5% 1/4W                 200KQBK-ND
R45            390 K 5% 1/4W                 390KQBK-ND
R47            1 M 5% 1/4W                   1.0MQBK-ND

U1             LM837     Quad Op Amp         LM837N-ND
U2,5           LMC660    Quad Op Amp         LMC660CN-ND
U3             CD4052    Multiplexer         CD4052BE-ND
U4,7           LM339     Quad comparator     LM339N-ND
U6             LM334     Current regulator   LM334Z-ND
U8             CA3096    Transistor array    CA3096CE-ND
U9             PIC16C73  Microprocessor      PIC16C73/JW-ND (EPROM)
                                             PIC16C73/20/SP-ND (OTP)
U10            78L05   5 volt regulator      LM78L05ACM-ND

X1             20.0 MHz. crystal             CTX062-ND       10-20-98