English to French Tech/Engineering Electronics / Elect Eng high grm structure with low drive field

contexte
"The Transpinnor has characteristics similar to both transistors and transformers. Like a transistor, it can be used for amplification, logic, or switching. Like a transformer, it can be used to step voltages and currents up or down, and the
input is resistively isolated from the output, i.e., the only connection between input and output is inductively through a magnetic field so there is no low-frequency résistive path between input and output. Unlike ordinary transformers, a transpinnor has no low-frequency cutoff; the coupling is flat down to and including dc. The gain is proportional to the supply voltage (or current); doubling the supply voltage (or current) results in doubling both voltage output and current output."