Stage differential input of electronic equipment, comprising means for reduce the disturbances caused by a voltage or a common mode current

摘要

According to one embodiment, the means for reducing the disturbances caused by a voltage or current in the common mode comprise, on each of the channels, of the adders (s3, s4) in order to add to the input voltage of the channel considered a voltage of the other hand, - reaction (v1), a bridge (r1, r2), and an inverter (13) in order to provide the voltage of the other hand, - reaction, which is equal to half the somrne of the voltages (va, vb) respectively present on the inputs (a, b), with an opposite sign.