the ratio of output signal to input signal of two port network). In the definition of noise figure in Multisim, no is the output noise power, NS is the thermal noise of signal source resistance, and G is the AC gain of the circuit (i.e.
Noise figure analysis: mainly used to study the influence of noise parameters in component model on circuit. The total noise is the sum of the respective noises at the node (expressed in RMS).Ħ. In the analysis, it is assumed that the noise sources in the circuit are uncorrelated, so their values can be calculated separately. Noise analysis: noise analysis is used to check the noise power amplitude of electronic circuit output signal, and to calculate and analyze the influence of resistance or transistor noise on the circuit. If there are several AC sources in the circuit, the fundamental frequency can be set at the least common factor of these frequencies.ĥ. In other words, the time-domain change signal at the measured node is taken as the discrete Fourier transform, and the frequency of the AC excitation source in the circuit is generally set as the fundamental frequency. Fourier analysis: used to analyze the DC component, fundamental frequency component and harmonic component of a time domain signal. In the transient analysis, the DC power supply keeps constant, the AC signal source changes with time, and the capacitance and inductance are energy storage mode components.Ĥ.
That is to observe the voltage waveform of the node at each time in the whole display cycle. Transient analysis: transient analysis specifies the time domain response of the selected circuit node. Therefore, the output response is also a function of the AC frequency of the circuit.ģ.
#Multisim transient analysis generator
If other signals of the function signal generator are taken as input excitation signals, they will be automatically input as sinusoidal signals in AC frequency analysis. are in AC mode, and the input signal is also set to sine wave form. During the analysis, the DC source in the circuit will be automatically set to zero, the AC signal source, capacitance, inductance, etc. It is necessary to select the circuit node to be analyzed. AC analysis: AC analysis is used to analyze the frequency characteristics of circuits.
DC operating: during DC operating point analysis, the AC source in the circuit will be set to zero, the capacitor will be open circuit, and the inductor will be short circuited.Ģ. The circuit analysis methods of Multisim include DC working point analysis, AC analysis, transient analysis, Fourier analysis, noise analysis, distortion analysis, DC scanning analysis, Sensitivity analysis, parameter scan analysis, temperature scan analysis, zero one pole analysis, transfer function analysis, worst case analysis, Monte Carlo analysis, batch analysis, user-defined analysis, noise figure analysis.ġ.