4 シミュレーション

4.1 オリジナル

    1 High gain PK phase splitter (Original)
    2 .INCLUDE ECC88.inc
    3 
    4 VI 1 0 DC 0 AC 1 SIN(0 0.1 1kHz)
    5 R1 1 0 100k
    6 XV1 2 1 3 ECC88
    7 R2 3 4 300
    8 C1 3 0 470u
    9 R3 4 0 30
   10 VIP1 5 2 0
   11 R4 5 6 7.5k
   12 R5 6 7 15k
   13 VB 7 0 259V
   14 XV2 8 5 9 ECC88
   15 R6 9 0 15k
   16 C2 9 6 220u
   17 VIP2 10 8 0
   18 R7 7 10 7.5k
   19 C3 10 11 0.68u
   20 R8 11 0 330k
   21 C4 9 12 0.68u
   22 R9 12 0 330k
   23 
   24 .NODESET V(2)=100.5V V(6)=153.3V V(8)=207.5V V(9)=103V
   25 
   26 .control
   27 op
   28 print v(2) v(3) v(2,3) v(1,3)
   29 print i(vip1)
   30 print v(8) v(5) v(9) v(8,9) v(5,9)
   31 print i(vip2)
   32 print v(6) v(6,9)
   33 ac dec 30 1k 1k
   34 print abs(v(2)) db(v(2))
   35 print abs(v(8)/v(2)) db(v(8)/v(2))
   36 print abs(v(9)/v(2)) db(v(9)/v(2))
   37 .endc
   38 .END

出力結果

    1 
    2 Circuit: high gain pk phase splitter (original)
    3 
    4 v(2) = 1.005281e+02
    5 v(3) = 2.324254e+00
    6 v(2,3) = 9.820389e+01
    7 v(1,3) = -2.32425e+00
    8 i(vip1) = 7.043194e-03
    9 v(8) = 2.074606e+02
   10 v(5) = 1.005281e+02
   11 v(9) = 1.030788e+02
   12 v(8,9) = 1.043819e+02
   13 v(5,9) = -2.55061e+00
   14 i(vip2) = 6.871917e-03
   15 v(6) = 1.533521e+02
   16 v(6,9) = 5.027334e+01
   17 
   18 abs(v(2)) = 2.903273e+01        # A1
   19 db(v(2)) = 2.925776e+01
   20 abs(v(8)/v(2)) = 8.534674e-01   # A2p
   21 db(v(8)/v(2)) = -1.37626e+00
   22 abs(v(9)/v(2)) = 9.259105e-01   # A2k
   23 db(v(9)/v(2)) = -6.68620e-01

ゲインはプレート側0.8535倍，カソード側0.9259倍となり， 0.71dBのアンバランスがあります．

4.2 ACバランス後

    1 High gain PK phase splitter (Case 2--AC balanced)
    2 .INCLUDE ECC88.inc
    3 
    4 VI 1 0 DC 0 AC 1 SIN(0 0.1 1kHz)
    5 R1 1 0 100k
    6 XV1 2 1 3 ECC88
    7 R2 3 4 300
    8 C1 3 0 470u
    9 R3 4 0 30
   10 VIP1 5 2 0
   11 R4 5 6 7.5k
   12 R5 6 7 15k
   13 VB 7 0 259V
   14 XV2 8 5 9 ECC88
   15 R6 9 0 15k
   16 C2 9 6 220u
   17 VIP2 10 8 0
   18 R7 77 10 8.175267k
   19 C3 10 11 0.68u
   20 R8 11 0 330k
   21 C4 9 12 0.68u
   22 R9 12 0 330k
   23 VBB 77 0 263.6404
   24 
   25 .NODESET V(2)=100.5V V(6)=153.3V V(8)=207.5V V(9)=103V
   26 
   27 .control
   28 op
   29 print v(2) v(3) v(2,3) v(1,3)
   30 print i(vip1)
   31 print v(8) v(5) v(9) v(8,9) v(5,9)
   32 print i(vip2)
   33 print v(6) v(6,9)
   34 ac dec 30 1k 1k
   35 print abs(v(2)) db(v(2))
   36 print abs(v(8)/v(2)) db(v(8)/v(2))
   37 print abs(v(9)/v(2)) db(v(9)/v(2))
   38 .endc
   39 .END

出力結果

    1 
    2 Circuit: high gain pk phase splitter (case 2--ac balanced)
    3 
    4 v(2) = 1.005281e+02
    5 v(3) = 2.324254e+00
    6 v(2,3) = 9.820389e+01
    7 v(1,3) = -2.32425e+00
    8 i(vip1) = 7.043194e-03
    9 v(8) = 2.074606e+02
   10 v(5) = 1.005281e+02
   11 v(9) = 1.030788e+02
   12 v(8,9) = 1.043819e+02
   13 v(5,9) = -2.55062e+00
   14 i(vip2) = 6.871917e-03
   15 v(6) = 1.533521e+02
   16 v(6,9) = 5.027334e+01
   17 
   18 abs(v(2)) = 2.900272e+01        # A1
   19 db(v(2)) = 2.924878e+01
   20 abs(v(8)/v(2)) = 9.237088e-01   # A2p
   21 db(v(8)/v(2)) = -6.89299e-01
   22 abs(v(9)/v(2)) = 9.237058e-01   # A2k
   23 db(v(9)/v(2)) = -6.89326e-01

ゲインはプレート側0.9237倍，カソード側0.9237倍となり， ACバランスが取れていることがわかります．

ayumi
2015-10-25