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CIRCUS. A DIGITAL COMPUTER PROGRAM FOR TRANSIENT ANALYSIS OF ELECTRONIC CIRCUITS-USER'S GUIDE.
BOEING CO SEATTLE WA
CIRCUS is a digital computer program which simulates the time domain response of an electronic circuit to an arbitrary forcing function. Although it is coded in FORTRAN IV for an IBM 7094 computer using the IBSYS Version 13 monitor system, the code has been converted for use on several other computers. CIRCUS uses a charge-control parameter model to represent each semiconductor device. When given the primary photocurrent induced in the semiconductor devices, the transient behavior of a circuit in a radiation environment con be determined. The results from CIRCUS have been very satisfactorily compared with those from physical circuits, both in the laboratory and in intense radiation environments. In this volume, a complete description of input required by the code is given, along with a discussion of the options which a user may employ in his circuit analysis. Examples of a CIRCUS analysis of several circuits demonstrate the use of this program. In Volume II, the theoretical foundation for CIRCUS is presented in some detail. Macroscopic and detailed flow charts, a description of major subprograms, and a listing of program variables are included for those who wish to have more than a casual understanding of the code.