| Popis: |
A sub-circuit can use an existing symbol, either by modifying an existing one, or by downloading from the Internet; or by creating one from scratch. And it can be useful to have a symbol for, say, a variable resistor, which we create from an assembly of lines and shapes that can be sized, rotated, moved and copied. We then add and name pins in the netlist order. We use the Symbol Attribute dialogue to assign a ‘Type’, ‘Prefix’ and optionally ‘SpiceModel’ to associate the symbol with a model file and ‘Value’ and ‘Value2’ fields to supply default values and then the ‘SpiceLine’, ‘SpiceLine2’ and ‘ModelFile’ fields to specify a library and optionally prevent it being edited. |
