How do I create a triangle wave source?
A triangle wave source can be created using the Voltage Source component available in the Waveform Sources group of the Analog Primitives section in the Component menu. When the source is placed in a schematic, select the Pulse tab. Set the PW (pulse width) parameter to 0. The TR and TF parameters will define the rise and fall times of the triangle source respectively. Due to the zero value of the pulse width, the result will be a triangle waveform. For a current triangle waveform, select the part called Current Source, available in the same group, and follow the same technique.