Altough you can draw these with any vector drawing software (like inkscape, Illustrator, Corel Draw...) graph drawing applications (Visio, yEd...) or general CAD (AutoCAD...). You should also consider using some suitable Electrical CAD application for this as well as latex features such as Tikz
ECAD applications give you a benefit if you need to do further work on your design. First they offer libraries of symbols. But symbols are not just mere pictures to these CAD applications but have actual meaning. This means that the ECAD can validate your design, tie the schematic to
a physical layout, calculate values needed, simulate etc.
The other good option since you are using Latex, is to use Tikz. Tikz is just Latex you can find examples of electrical drawings done in Tikz here. The benefit of Tikz is that it respects your document styling so if you change it later the drawing also does so this means that reusing your image is easier in future.