Page 250 - Make Your Own PCBs with EAGLE from Schematic Designs to Finished Boards

FIGURE 11-13 Creating a heater supply symbol.

Making a Device

We have a package and a symbol for our valve, but we have not linked the two or let EAGLE know
that the package actually contains two triode symbols. To do this, we need to create a device by
clicking on the “Devices” icon in the toolbar and then entering the name 12AU7 into the “New” text

field. In the view that then appears, we need to use the Add tool to add two of the TRIODE symbols
and one HEATER_SUPPLY symbol to the main editor area.
Next, we need to add the package, so, in the bottom right of the Editor Window, click on the
“New” button, and select “RETMA-9A.” The editor window should now look like Figure 11-14.