REM calculation of pancake style inductor
      ANSWER = 0
      UP = 0
      REM r = radius of coil in inches
      r = 1.5
      REM w = width of windings
      w = 0.05
      REM inductance of coil in uH
      ind = 100
      REM calculation of inductance
      UP = ((8*r) + (11*w)) * ind
      ANSWER = SQR(UP/r^2)
      
      PRINT "for inductance of = ";ind"uH"
      PRINT "Coil radius = ";r" inches";" or = ";r*25.4;"mm"
      PRINT "Coil width of track = ";w" inches";" or = ";w*25.4;"mm"
      PRINT "number of track turns = "ANSWER" turns"
      
      REM impedance calculations example
      REM co-axail impedance is Z=SQR(L/C)
      REM RG8 = 50ohms
      REM RG8 = 100pF/m
      REM RG8 = 0.25uH/m