The 300V direct current is turned into pulse current through the auxiliary power switch tube, and two sets of AC voltage are output through the auxiliary power transformer. One way is regulated by a rectifier and a three-terminal regulator, and the output is + 5VSB, added to the main board as the standby voltage; the other is rectified and filtered to output an auxiliary 20V power supply for PWM and other chips to work. With auxiliary circuits, the computer can start and shut down the software.
Computer Aided Circuits
DC operating point analysis, AC analysis, transient analysis, Fourier analysis, noise analysis, distortion analysis, DC sweep, sensitivity analysis, parameter sweep, temperature sweep, zero-pole analysis, transfer function analysis, worst-case analysis.
The simulation method is practical, the selected components and measuring instruments are very close to the actual situation, and the interface is visual and intuitive. The components, instruments, and meters required for drawing circuit diagrams appear in the form of icons, which are convenient to select and can expand the component library. It is possible to set faults such as open circuit, short circuit and different degrees of leakage for the components in the circuit to observe various states of the circuit for different faults so as to deepen the understanding of the circuit principle. While carrying out the simulation, it can also store all the data of the test point, the working status of the test instrument, display the waveform and specific data, and list the components list of all the simulated circuits, etc. There are a variety of input and output interfaces that are compatible with SPICE software and can be converted mutually. The circuit files generated by Multisim can also be directly output to common printed circuit board layout software such as Protel, Tango, Orcad.
View: Adjust the view window.
Place: Place nodes, components, buses, input/output terminals, text, subcircuits and other objects in the editing window.
Simulation: Provide various devices and methods for simulation.
Conversion: Transmit the built circuit and analysis results to other applications.
Tools: Use It can be used to create, edit, copy, delete components.
Options: Set the operation and interface of the program.
The role of auxiliary circuit
300V direct current through auxiliary The power switch tube becomes a pulse current, and the auxiliary power transformer outputs two sets of AC voltage, one is rectified and stabilized by a three-terminal regulator, and the output is +5VSB, which is added to the main board as the standby voltage; the other is rectified and filtered, and the auxiliary output 20V Power supply for PWM and other chips to work. With auxiliary circuits, the computer can start and shut down the software.