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diff --git a/Windows/spice/docs/ANALYSES b/Windows/spice/docs/ANALYSES deleted file mode 100644 index 5b715be9..00000000 --- a/Windows/spice/docs/ANALYSES +++ /dev/null @@ -1,115 +0,0 @@ -12345678901234567890123456789012345678901234567890123456789012345678901234567890 - -ANALYSES -======== - -This file lists the analyses currently implemented into ngspice. - -Table of Contents - - 1 Noise analysis (NOISE) - 1.1 Small signal noise - 1.2 Transient noise - 2 Operating point analysis (OP) - 3 Operating point sweep Analysis (DC) - 4 Pole-zero analysis (PZ) - 5 Small-Signal distortion analysis (DISTO) - 6 Small Signal frequency response analysis (AC) - 7 Sensitivity analysis (SENS) - 8 Transfer function analysis (TF) - 9 Transient analysis (TRAN) - 10 Periodic steady state analysis (PSS, experimental feature) - - - -1 Noise analysis (NOISE) - - 1.1 Small signal noise - - The noise analysis does analysis device-generated noise for the given - circuit. When provided with an input source and an output port, the analysis - calculates the noise contributions of each device (and each noise generator - within the device) to the output port voltage. It also calculates the input - noise to the circuit, equivalent to the output noise referred to the - specified input source. This is done for every frequency point in a specified - range - the calculated value of the noise corresponds to the spectral density - of the circuit variable viewed as a stationary gaussian stochastic process. - - 1.2 Transient noise - - Time domain noise analysis during transient simulation is enabled by - providing voltage (and current) source options with white, 1/f and - random telegraph signal noise signals. - - -2 Operating point analysis (OP) - - The operating point analysis determines the dc operating point of the - circuit with inductors shorted and capacitors opened. - - -3 Operating point sweep Analysis (DC) - - The operating point sweep analysis determines the values of output - variables while one or two specified independent voltage or current source is - stepped over a user-specified range and the dc output variables are stored - for each sequential source value. Resistance and temperature sweep are - included. - - -4 Pole-zero analysis (PZ) - - The pole-zero analysis computes the poles and/or zeros in the small-signal - ac transfer function. The program first computes the dc operating point and - then determines the linearized, small-signal models for all the nonlinear - devices in the circuit. This circuit is then used to find the poles and zeros - of the transfer function. Unfortunately this code is (since its inception in - spice3) not free of bugs. - - -5 Small-Signal distortion analysis (DISTO) - - The distortion analysis computes steady-state harmonic and intermodulation - products for small input signal magnitudes. Not all devices are supported. - - -6 Small Signal frequency response analysis (AC) - - The ac small-signal computes the ac output variables as a function of - frequency. The program first computes the dc operating point of the circuit - and determines linearized, small-signal models for all of the nonlinear - devices in the circuit. The resultant linear circuit is then analyzed over a - user-specified range of frequencies. - - -7 Sensitivity analysis (SENS) - - Ngspice will calculate either the DC operating-point sensitivity or the AC - small-signal sensitivity of an output variable with respect to all circuit - variables, including model parameters. Spice calculates the difference in an - output variable (either a node voltage or a branch current) by perturbing - each parameter of each device independently. - - -8 Transfer function analysis (TF) - - The (small signal) transfer function analysis computes the dc small-signal - value of a transfer function (ratio of output variable to input source), - input resistance, and output resistance is also computed as a part of the dc - solution. - - -9 Transient analysis (TRAN) - - The transient analysis computes the transient output variables as a - function of time over a user-specified time interval. The initial conditions - are automatically determined by a dc analysis. All sources which are not time - dependent (for example, power supplies) are set to their dc value. - - -10 Periodic steady state analysis (PSS) - - The periodic steady state analysis computes solutions for oscillating - circuits. Currently only the autonomous case is implemented. - - |