Generic selectors
Exact matches only
Search in title
Search in content
Post Type Selectors

telecom

Viewing 10 posts - 1 through 10 (of 10 total)
  • Author
    Posts
  • #34909
    Venkat
    Guest

    why -48v power supply is used in the telecommunication networks.

    #34910
    jhon
    Guest

    hie venkat:
    48v dc power supply is used for electronic devices. these devices are more efficient at this voltage. in short it is ootimized value.

    #34911
    mk
    Guest

    well why negative voltage is used is still unclear.

    #34912
    krishna
    Guest

    noise will be induced in +ve level
    only.better to have +ve grounded to have less noise

    #34913
    MK
    Guest

    The Bell System pioneered -48VDC power sources for many reasons. One reason was the reaction of eletrons with dissimmiliar metals in a circiut. This is also called eletrolisis. Plus the information that krisha provide is also a big factor for -48VDC.

    #34914
    Venkat
    Guest

    i want to ask about telecom?
    all thing about it

    #34915
    Venkat
    Guest

    Mk’s reply seems to be technically correct.

    #34916
    Nic-Anb.
    Guest

    Thanks folks, this was very useful to me .. I use -48V in all our telecom equip…

    #34917
    VK
    Guest

    I would like to add to Mk,s reply.Also humans being +ve in nature when they come in Contact with +ve there won’t be any reaction and also humans can with stand upto 1A of current.

    #34918
    y
    Guest

    yes

Viewing 10 posts - 1 through 10 (of 10 total)
  • The forum ‘Telecom Design’ is closed to new topics and replies.