LAN interface with simplified overcurrent protection

Details LAN interface with simplified overcurrent protection LAN interface with simplified overcurrent protection

1994-02-14

1996-08-20

Gaffin, Jeffrey A.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

361 18, 323277, H02H 300

Patent

active

055484670

ABSTRACT:
A local area network (LAN) interface port with a simple overcurrent protection circuit which isolates the power supply connection for the port from fault conditions on the LAN. The circuit has a normally-on field effect pass transistor in line with the load terminal. The pass transistor shuts off when a fault condition is detected. Such a condition is detected when the voltage across a sense resistor becomes greater than the voltage across a reference resistor. A current mirror is made up of a transistor array and the sense and reference resistors. The current mirror compares the two voltages, and a bipolar transistor switches the gate voltage of the pass transistor on when the fault condition is detected. The design is particularly useful with the LAN system specified in ANSI/IEEE Standard 802.3, commonly known as Ethernet.

REFERENCES:
patent: Re33941 (1992-05-01), Lorinez et al.
patent: 4404473 (1983-09-01), Fox
patent: 4860154 (1989-08-01), Fazlollahi
patent: 5181155 (1993-01-01), Beg et al.
patent: 5245523 (1993-09-01), Juzswik
patent: 5319515 (1994-06-01), Pryor et al.

Affiliated with

Also associated with

Rating

LAN interface with simplified overcurrent protection does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with LAN interface with simplified overcurrent protection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and LAN interface with simplified overcurrent protection will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2334985