dicfle lujvo

f1=d1 is an electrical current / flow in / on / through f2 = d2 flowing in direction to / towards f3 from direction/source f4.

Cf. dicflecru, dicka'u. dicka3 is not sensical.

In notes:

dicflecru
c1 is a transistor / electrical regulator which allows electric current c2 = df1 to flow under conditions c3 in / on / through df2 flowing in direction to / towards df3 from direction/source df4.
dicka'u
x1 is an electron.