| 摘要 |
A protection device protects a terminal that can be connected to a jack connected to a local area network capable of providing a remote power feed to terminals. The protection device includes:capacitors (C1, . . . , C4; C1', . . . , C4') for preventing the propagation of a direct current from said jack to the terminal, and(R1, . . . , R4, ZD, LED; R1', . . . , R4', ZD', LED') for signaling to a user the presence of a remote power feed voltage at the jack concerned. Application to computer networks.
|
