Recently I found the need to draw electrical circuits to show the relation of neural models to them. For this I found a tool within python that lets you draw most common circuits by defining them line by line. It’s called SchemDraw, and you can find it here.

%matplotlib inline
import SchemDraw as schem
import SchemDraw.elements as e
d = schem.Drawing()
V1 = d.add( e.SOURCE_V, label='10V' )
d.add( e.RES, d='right', label='100K$\Omega$' )
d.add( e.CAP, d='down', botlabel='0.1$\mu$F' )
d.add( e.LINE, to=V1.start )
d.add( e.GND )
d.draw()

circuit

As you can see, you add elements to the circuit one by one. The standard elements are contained in the module SchemDraw.elements, and the position of every element is given by a start and end point:

print(V1.start,V1.end)

[ 0.  0.] [  1.83697020e-16   3.00000000e+00]