//
// VBIC Model Equivalent Circuit
//
// Equivalent Circuit Network:
//
//          |       |
// -(->)-  (^) and (v)   are voltage controlled current sources (arrow gives
//          |       |        reference direction for current flow), key letter I
//
// +  -             | +
// -||-        and  =    are voltage controlled charge sources (+/- signs
//                  | -      give reference polarity), key ketter Q
//
// -(=>)-                are current controlled flux sources (arrow gives
//                           reference direction for flux), key letter F
//
// o             are nodes
//
// resistors are depicted as voltage controlled current sources for
// generality (also, this is true if self-heating is modeled)
//
// -----------------------------------------------------------------------------
// |                                                                           |
// | BE/BC/CS extrinsic      o s                                   o c         |
// | overlap capacitances    |                                     |           |
// | not shown               |                                     |           |
// |                        (v) Irs                               (v) Ircx     |
// |                         |                                     |           |
// |                         |                                     |           |
// |                ---------o---- si                              |           |
// |                |        |   |                                 |           |
// |                |      + |   |                                 |           |
// |                |   Qbcp =  (v) Ibcp                           |           |
// |                |      - |   |                                 |           |
// |                |        |   |                                 |           |
// |          Iccp (^)    bp o---+----(<-)----+--------------------o cx        |
// |                |        |   |    Irbp    |                    |           |
// |                |      - |   |            |                    |           |
// |                |   Qbep =  (^) Ibep      |                   (v) Irci     |
// |                |      + |   |            |                    |           |
// |                |        |   |            |                    |           |
// |                ---------+----            |       ----+--------o ci        |
// |                         |                |       |   |        |           |
// |                         |              - |       |   | -      |           |
// |                         |           Qbcx =  Ibc (^)  = Qbc    |           |
// |                         |              + |       |   | +      |           |
// |                       bx|                |       |   |        |           |
// |          b o----(->)----o---+----(->)----+-------+---o bi    (v) Itxf-Itzr|
// |                 Irbx    |   |     Irbi           |   |        |           |
// |                         |   | +                  |   | +      |           |
// |                   Ibex (v)  = Qbex          Ibe (v)  = Qbe    |           |
// |  Thermal Network        |   | -                  |   | -      |           |
// |           dt            |   |                    |   |        |           |
// |  ---------o---------    ----+--------------------+---+--------o ei        |
// |  |        |        |                                          |           |
// |  |        |        | +                                        |           |
// | (^) Ith  (v) Irth  = Qcth                                    (^) Ire      |
// |  |        |        | -                                        |           |
// |  |        |        |                                          |           |
// |  ---------o---------                                          o e         |
// |           gnd                                                             |
// |                                                                           |
// |  Excess Phase Network                                                     |
// |           xf1                         xf2         Itxf=V(xf2)             |
// |  ---------o---------          ---------o---------                         |
// |  |        |        |          |        |        |                         |
// |  |        | +      |          |        | +      |                         |
// | (^) Itzf  = Qcxf  (v) V(xf2) (v) 1Ohm  = Qlxf  (^) V(xf1)                 |
// |  |        | -      |          |        | -      |                         |
// |  |        |        |          |        |        |                         |
// |  ---------o-------------------o--------o--------o                         |
// |          gnd                                                              |
// |                                                                           |
// -----------------------------------------------------------------------------
//