| 摘要 |
The invention concerns a device for monitoring a current flow in a load powered by a direct current source and a method using said device. The device monitoring a substantially direct current flow in a load (C) comprises, connected in series with the load (C), first means (2) for detecting the presence of an alternating current (IP), and further comprises second means (TA, TB; T1, T2, T3, T4) for interrupting the current flowing in the first means (2) while maintaining the substantially direct current in the load (C). Advantageously, the second means comprise at least a first electronic switch (TA; T1, T2, T3, T4) connected in series with the load (C) and with the first means (2), the first electronic switch (TA; T1, T2, T3, T4) being controlled so as to establish the alternating current (IP) in the first means. The invention also concerns a method for using said device which consists in: cyclically opening and closing the electronic switch while also cyclically making operable and inoperable the second means to maintain the substantially direct current in the load (C) and for allowing only periodically the current flowing in the load (C) through the second means. |
