   MODEL C149M10 (A-G-K)
   Modeling of the C149M10 SCR
   (see IEEE Transactions on IE, Vol.36, No.3, August 1989, pp. 451,
   modified see IEEE Trans. on IE, vol 39, no. 2, April 1992, pp. 141)
   ELEMENTS
      RG, G - K = 50
      RS, A - Y = TABLE RS (VCR)
      JD, Y - K = DIODE EQUATION (1E-9,40.)
      CD, K - Y = X11 (300.E-12+12.2E-9*(JD+220.E-12))
   ; sense circuit:
      CR, S - E = 10E-6
      RE, S - E = 1
      JE, E - S = X2 (60*IRG + 22*IRS)
    ; clamp circuit
      JC, S - E = TABLE CL (VCR)
   FUNCTIONS
      TABLE RS = -1,103E3, 0,103E3, 1,0.0125, 2,0.0125
      TABLE CL = -100,0, 5,0, 6,1000
