• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Using Valves Library in EAGLE CAD

Help please... I'm using the Valves library in EAGLE CAD to design a tube preamp. In schematic mode when I add a valve such as a 12AX7 it places V1A and then V1B but no heaters... If I try to add the heater separately it treats it as another valve. Can someone explain what I'm doing wrong? And or guide me through this?

Thanks in advance.

Steve