Hazardous voltage protection circuit

Details Hazardous voltage protection circuit Hazardous voltage protection circuit

H - Electricity

04

M

317/11, 379/67

H04M 7/00 (2006.01) H04M 1/74 (2006.01)

Patent

CA 1146290

HAZARDOUS VOLTAGE PROTECTION CIRCUIT Abstract of the Disclosure A circuit for protecting telephone lines from AC hazardous voltages. The circuit includes an amplitude dis- criminator triggered at a predetermined voltage level con- nected to the telephone lines, and providing an output pulse for each zero voltage crossover of the hazardous voltage. A digital pulse counter counts a predetermined number of output pulses from the amplitude discriminator, which in turn oper- ates a switch after the predetermined number of pulses are counted, opening the telephone lines between the central office and the telephone instrument until the hazardous voltage has been removed from the lines.

364061

Affiliated with

Also associated with

Rating

Hazardous voltage protection circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-525171