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Software Engineering/Physical Sciences SWITCAP-PC
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SWITCAP-PC |
| Price: FREE |
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This version, SWITCAP-PC, runs on MS-DOS for Windows platforms except Vista. It is a PC version of the old Switcap 1 program, but can only handle switched-capacitor circuits of limited size (e.g., a filter up to fifth order). It handles only linear circuits, and provides basic transient response, frequency response, and spectrum analyses. 1. SWITCHING INTERVALS
An arbitrary number of switching intervals per switching period is allowed. The durations of the switching intervals may be unequal and arbitrary.
2. NETWORK ELEMENTS
The program can simulate linear SCN's containing the following types of ideal analog components: ON-OFF switches, linear capacitors, linear voltage-controlled voltage sources (VCVS's), and independent voltage sources. The waveforms of the independent sources may be continuous or piecewise-constant. The switches in linear SCN's are controlled by periodic clock waveforms only.
3. TIME-DOMAIN ANALYSIS OF LINEAR SCN'S
The program provides two kinds of time-domain analyses. One is only applicable for linear SCN's and it computes the transient response of linear SCN's to any prescribed input waveform, in order to afterward compute the steady-state values for a set of dc inputs for t <0.
4. VARIOUS WAVEFORMS FOR TIME DOMAIN ANALYSIS
Various time-domain waveforms such as pulse, cosine, piecewise linear, and dc sources are available as the input for transient analysis.
5. FREQUENCY DOMAIN ANALYSIS OF LINEAR SCN'S
Since SCN's are time-varying networks, a single-frequency sinusoidal input can produce a steady-state output containing many frequency components. The program can determine all of these output frequency components for both continuous and piecewise-constant input waveforms. Z-domain quantities can also be computed.
6. BUILT-IN SAMPLING FUNCTIONS
Both the input and output waveforms may be sampled and held at arbitrary instants to produce the desired waveforms for time- and frequency-domain analyses of linear SCN's. The output waveforms may also be sampled with a train of impulse functions for z-domain analyses.
The features of Switcap 1, on which Switcap-PC is based, and the algorithms used in it, are discussed in [, , , , , , , , ]. |
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