Figure 4.12. Remember, this circuit is exactly electrically identical to that of figure 4.11. The bottom line of the circuit runs continuous from left to right. The bottom end of an AC generator connects to this line and to ground. The top end of the generator connects to a horizontal resistor labeled h sub I e. The other end of this resistor connects to one end of the current source and the resistor R L. The current source is labeled I sub b times h sub f e. The current source and R L are vertical with R L to the right of the current source. The lower ends of both connect to the ground line. Where the top of the generator meets the h sub I e resistor, the B terminal is located. Where the top of the current source meets R L there is a terminal labeled E. To keep the equivalent circuit looking like a 4 terminal network there are two C terminals, one on the left and one on the right. The C terminal on the left is on the line connecting the grounded end of the AC generator to the bottom of the current source. The C terminal on the right is between the bottom of the current source and the bottom of R l. End verbal description.