Weyl semimetals are a recently discovered class of materials that present unique topological properties. In the last years, they have been a topic of great interest for research, but few applications have been proposed to exploit their unique characteristics. The transport properties of Weyl semimetals make them very promising for applications in electronics, especially at low temperatures. This work is focused on the interaction of these materials with an electric field, with the aim to study the behavior of gated devices with a Weyl semimetal channel. The first model studied was the one of a Klein tunneling transistor, a device where the effect of the gate is to shift the energy bands of a portion of the channel, creating an energy barrier that reflects some of the incoming carriers.