DEVICE FOR REMOTE POWER FEEDING TERMINAL IN TELECOMMUNICATION NETWORK AND CONCENTRATOR AND REPEATER INCLUDING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a remote power feed device for supplying a remote power feed to a terminal in a telecommunication network. SOLUTION: The remote power feed device includes a first resistor and a second resistor which is connected in parallel with the first resistor and has a lower resistance value than the first resistor has. The device compares the voltage at the terminal of the first resistor with a first threshold voltage and the voltage at the terminal of the second resistor with a second threshold voltage. The device further includes a switching device which connects the first resistor in series in a remote power feed circuit when the device detects that a remote power feed current is smaller than a third threshold current which is between first and second threshold currents. When the switching device detects that the remote power feed current is larger than the third threshold current, the device connects the second and first resistors which are connected in parallel in series in the remote power feed circuit.