2.3 Exercise: drawing a schematic in national instruments multisim

Exercise: drawing a schematic in multisim

Approximate time to complete: 20 minutes.

This exercise provides a general introduction to Multisim’s schematic capture. You will build and wire a basic circuit in Multisim using a variety of means to access parts,experiment with the wiring and run a basic simulation.

Objectives

• Understand the difference between real, virtual, ideal, and interactive parts.
• Build and wire a basic circuit (including virtual wiring).
• Become familiar with and set wiring options.

Procedure

• Build your own version of circuit 40kFILTER1_Complete.ms9 as pictured below. Select the required components from the MasterDatabase (Place/Component) and the In-Use List. Set component values as identified below. Note: Components R1, R2 and C2 are allvirtual parts.

• To wire your circuit, point at a component terminal so that you see the cursor changes to crosshairs and left-click. Move thepointer (while dragging the wire) to the second component terminal and left-click to terminate.
• Using the Replace function by right clicking on the R2, choose Replace Component(s) and substitute the virtual resistor(R2) with a real resistor (Basic/Resistor) of your choice.
• Double-click on the virtual components to see how they can be used to set variable parameters.
• Rotate and move a component within the circuit to see how movement of components affects the wiring. Components can also berotated while being placed from the database.
• Select the virtual capacitor from the In-Use List and place it between Points A and B in the circuit. Notice the how it isautomatically connected, and has a capacitance of 270 pF.