Interested to Buy Any Domain ? << Click Here >> for more details...
Why -48V dc power supply using in telecom field?
- 7 Answers
- 23793 Views
- APC, Cisco, I also Faced
- E-Mail Answers
Answer Posted / r. d.
- 48 VDC is used in telecom to prevent corrosion or
electrolysis. If you use +48VDC there are free electrons
raging to go somewhere, as each electron is lost, you lose
what is part of a molecule of copper, thus the copper
corrodes away, lines corrode away until they break! -48VDC
wants electrons so it attracts molecule = no loss of copper
or corrosion/electrolysis.
| Is This Answer Correct ? | 36 Yes | 3 No |
Post New Answer View All Answers
Comment on the working principle of operation of a single-phase transformer.
What is the source of dependent source ?
What are the advantages of nichols chart?
In vapour absorption refrigeration machine fluids used are
what is the difference between earthing and unearth
You are of electrical field and you are going for software? Why
Which motor will you choose which can operate in both lagging as well as leading power factors?
what is the necessity of under ground cables ??
What are Contactors? How they works and what its highest rating?
A logic circuit that provides a HIGH output if one input or the other input, but not both, is HIGH, is a(n)?
what is the difference between Power and Distribution transformers ?
Dear sir, I have completed DECE in the year 1995. I have work experience in HT and LT LINE more than five years. Now i am doing BE in EEE from rajasthan university. After completion of BE,can i apply "C" Licence sir? Please reply.
if 12v battery get discharged for 2 months after if we put charge it will charge again?how much time it will take to charge?
What is lifting power for 1 wb/m2 and 1 A magnet?
For a stable system, where should the poles of a system be in a root loci plot?
