1. Construction and use of Multisim simulation software

1.1 Features and advantages of Multisim

MULTISIMIt is a virtual simulation software that completes the principle circuit design and circuit function test; it is often used in college experiment courses and some circuit designs.

Features (Understanding)

The component library of MULTISIM provides thousands of circuit components for experiment selection, and at the same time, the existing component library can be newly built or expanded; its test instruments and meters are complete, and there are general-purpose instruments for general experiments, such as oscilloscopes, multimeters, and function signals. Generators, DC power supplies; there are also instruments that are rare or not available in general laboratories, such as distortion meters, spectrum analyzers, etc.;
MULTISIM has relatively advanced circuit analysis functions, which can complete transient analysis and steady state analysis, time domain analysis and frequency domain analysis of circuits, linear and nonlinear analysis of devices, noise analysis and distortion analysis of circuits, AC and DC sensitivity analysis, etc. Circuit analysis methods to help designers analyze the performance of circuits;
MULTISIM can design, test and demonstrate various electronic circuits, including electrical circuits, analog circuits, digital circuits, radio frequency circuits and some microcomputer interface circuits.
Various faults can be set for the components in the simulated circuit, such as open circuit, short circuit and different degrees of leakage, so as to observe the circuit working status under different fault conditions;
While performing the simulation, the software can also store all the data of the test points, list all the components of the simulated circuit, store the working status of the test instrument, display waveforms and specific data, etc.

Advantages (understanding)

The design and experiment can be carried out simultaneously, and the experiment can be carried out while designing, which is convenient for modification and debugging;
The components and test instruments for design and experiment are complete, and various types of circuit design and experiments can be completed;
It is convenient to test and analyze the circuit parameters;
Can directly print out experimental data, test parameters, curves and circuit schematic diagrams;
etc. . .

Multisim14.0 installation package and the network disk link of the installation tutorial are as follows:
Link: https://pan.baidu.com/s/1-y7vxpPJSjcnv-0lrc7vgA
Extraction code: dpep

Second, the use of Multisim

2.1 Multisim work interface

insert image description here

New file
①
insert image description here
②

2.2 Component List

①
insert image description here
②

2.3 Component database (example part)

insert image description here

Master database:
used to store the component models that come with the program, and a large number of more accurate component models provided by Multisim for users are placed in it.
Depending on the version, the number of simulation components contained in the database is also different.
Enterprise database:
only valid in the professional version, used to create a shared component library when multiple people jointly develop projects
User database:
used to store component models developed by users using the editor provided by Multisim

power bank
insert image description here

Power supply, signal voltage source, signal current source, control function module, control voltage module, control current source, control component library
The components of the source class are all regarded as virtual components, so the component editing tools in Multisim cannot be used to modify or recreate their models and symbols, and only relevant parameters can be set.

Basic component library
insert image description here
Connectors, fixed value virtual components, sockets, switches, relays, ordinary resistors, ordinary capacitors, inductors, transformers, nonlinear transformers, variable capacitors, variable inductors, potentiometers, etc.

Diode Library
insert image description here
All kinds of diodes

Transistor library
insert image description here
All kinds of transistors and MOS transistors

Analog Components
insert image description here
Operational amplifiers, Norton op amps, comparators, broadband op amps, special function op amps, virtual op amps