Spring 2004
ENSC 895: SPECIAL TOPICS: THEORY, ANALYSIS, AND SIMULATION OF NONLINEAR CIRCUITS

Assignment #9:

  • If you have not already done so, please send me a short paragraph describing your project.

  • Read:
        B. G. Lee and A. N. Willson, Jr., ``On a determinant expansion in the theory of two-transistor circuits,'' IEEE Transactions on Circuits and Systems, vol. 37, no. 6, pp. 864-866, June 1990.
        Lj. Trajkovic and A. N. Willson, Jr., ``Complementary two-transistor circuits and negative differential resistance,'' IEEE Trans. Circuits Syst., vol. 37, pp. 1258-1266, Oct. 1990.

  • Browse through:
        L. O. Chua, J. Yu, and Y. Yu, ``Negative resistance devices,'' Circuit Theory and Applications, vol. 11, pp. 161-186, July 1983.
        L. O. Chua and A. C. Deng, ``Negative resistance devices II,'' Circuit Theory and Applications, vol. 12, pp. 337-373, Oct. 1984.

  • 1. For the two circuits from Assignment #8, problem No. 2, run SPICE (any version) and obtain transfer characteristics v-i across the one-port when:
  • voltage driven
  • current driven.
    Use default transistor models.
    Choose R's so that each one-port exhibits NDR.
    For example, for circuit 2(b), chose: R1 = 110 Ohm, R2 = 237 Ohm, R3 = 21.5 kOhm, and R5 = 21.5 kOhm.

    Posted: March 18, 2004
    Due: March 25, 2004.

    Last modified: Saturday March 20 22:08:46 PST 2004.