Circuit for the protection of telephone lines

Details Circuit for the protection of telephone lines Circuit for the protection of telephone lines

1977-12-12

1981-03-03

Salce, Patrick R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Load shunting by fault responsive means

361 91, 361111, 361119, H02H 320

Patent

active

042544424

ABSTRACT:
Arrangement for protecting telephone lines and electronic circuits connected thereto from overvoltages. A first pair of diodes clamp the voltage of each wire versus the supply voltages in cooperation with a current limiting impedance. A second pair of (Zener-) diodes, separated from the first diode pair by means of a current limiting impedance, clamp the forward "transient" produced across the first diode pair versus the same or slightly different supply voltages.

REFERENCES:
patent: 3181033 (1965-04-01), Bakker
patent: 3372285 (1968-03-01), Blazek et al.
patent: 3558830 (1971-01-01), Bender
patent: 3633093 (1972-01-01), Templeton, Jr. et al.
patent: 3793535 (1974-02-01), Chowdhuri
patent: 4023071 (1977-05-01), Fussell
patent: 4066918 (1978-01-01), Heuner et al.

Affiliated with

Also associated with

Rating

Circuit for the protection of telephone lines does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Circuit for the protection of telephone lines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit for the protection of telephone lines will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-82743