| 摘要 |
An alternator for a motor vehicle comprises an excitation regulator circuit comprising a controlled switch (Tex) in series with the excitation winding, and a freewheel component (DL) which is connected to the terminals of the winding, and a circuit (10, 20, 30) for delivering information (Is1; Is2) representative of the state of excitation (Iexc) of the alternator. According to the invention, this circuit comprises: a means (10) for generating, while the switch is in the on state, a first signal (U1) proportional to the current (Iex) flowing through it; and a means (20) for generating a second signal (U2), this means being capable, while the switch is on, of generating the second signal on the basis of the first signal and, while the switch is off, of generating the second signal by storing (CD) the first signal which existed before the said switch was turned off. |
