Cadence PSPICE SCHEMATIC Manuel d'utilisateur télécharger pdf (Page 8)

Figure 9: Dialogue box for adding a library to Capture.

that the libraries are in the pspice folder and navigate to it if necessary. Select analog.olb

and click OK.

This library contains basic analogue components such as resistors and capacitors.

• Repeat this for the source.olb library. This contains ‘sources’ such as batteries. Almost

every analogue circuit needs these two libraries.

After adding the libraries, click on the ANALOG library in the Place Part dialogue box, scroll

down the Part List and choose R as in ﬁgure 8 on the preceding page. This is a resistor of

course. The corresponding symbol is shown at the bottom right; it is a zigzag rather than the

blank rectangle favoured by the IET. Click OK, which takes you back to the Schematic window.

The resistor moves around the workarea with the mouse until you left-click on the mouse

to secure it in place. Once positioned in the work area, the ﬁrst resistor assumes the name R1

and snaps to the grid, which is just visible as a faint array of dots. You can place successive

resistors by repeatedly left-clicking. Here it would be useful to have the second resistor vertical

rather than horizontal so right-click and choose Rotate before left-clicking to place the second

resistor. When you have placed both resistors, right-click and choose End Mode. Alternatively,

hit the escape (Esc) key.

Each successive resistor will be numbered in sequence, even if you delete an earlier one.

Although each component must have a unique name (number), it can have any value you like.

You can move and rotate components after they have been placed. Select a component by left-

clicking near its centre, which causes the component and labels to turn magenta. You can then

move, mirror or rotate it with the contextual menu.

Now add the battery. This is called VDC and is in the SOURCE library. Finally, add a

ground connection. This is a bit different.

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 24 25

Pas de commentaire

Cadence PSPICE SCHEMATIC Manuel d'utilisateur Page 8