Cadence PSPICE SCHEMATIC Bedienungsanleitung PDF herunterladen (Seite 10)

Figure 11: Dialogue box for changing the value of a component, VDC here.

• Move parallel to the grid, horizontally or vertically.

• Left-click again to create a corner if necessary.

• Left-click again to end the wire, usually on another component or an existing wire.

• interconnecting wires can be repeated until the wiring is complete. Exit the wire drawing

mode as usual with Esc or right-clicking and choosing End Mode. Unwanted wires can

be highlighted and deleted.

Your circuit should now resemble ﬁgure

12 on the next page. Here are some tips for wiring.

• Capture adds blobs to junctions where wires are joined. You can see one for the ground

connection in ﬁgure 12. There should not be blobs anywhere else – on the ends of

components, for instance. If there are, remove them with the Junction tool from the

toolbar or Place > Junction.

• Join wires in threes at T-junctions, never with four wires in a cross. The problem is that

one of the four wires may not be connected but you can’t tell. This is standard practice

for circuit drawings.

• Always join components with wires, not by placing them next to each other so that their

pins overlap. Again you can’t tell whether the connection has been made correctly.

Now the circuit is drawn and it is time to simulate it.

3.4 Simulation of a single situation – bias point

The ﬁrst step in a simulation is to create a simulation proﬁle, which contains the instructions

to PSpice. Choose PSpice > New Simulation Proﬁle or use the button, which brings up the

dialogue box in ﬁgure 13 on the following page. Each proﬁle needs a name, which is used to

identify the plots. Leave Inherit From as none – this is used if you want to base a new simulation

proﬁle on an existing one. Click Create and you will see the Simulation Settings dialogue box

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Cadence PSPICE SCHEMATIC Bedienungsanleitung Seite 10