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Ramasabarinathan - 27th February 2015 (14:07 GMT)
why in BTS eqiupment use only DC voltage?
can you please give informations in briefly.
Tadele Haile - 21st February 2015 (08:24 GMT)
Thank you for your informative answer to my burning question that i heard from interview question.
i hope we will be in touch.
james - 8th February 2015 (07:30 GMT)
what does pulse and lightening to do with -48v DC?
swati kumari - 15th January 2015 (09:47 GMT)
Why dc is given to bts ,why not ac?
sri - 9th January 2015 (06:56 GMT)
the standard lead acid cells or others are of 12vdc. Mulitiples of 12 gives 48V.
manzer aquil - 28th November 2014 (12:57 GMT)
why use -48 volt why not -50volt in BTS
Vasuki soni - 18th October 2014 (07:22 GMT)
Can negative voltages be used in other domains like power systems preferably to protect equipments from lightning and noise as has been identified in above comments..
gyan - 5th August 2014 (16:02 GMT)
It is -48 V D.C cause of the commercial battery stack available. Commercial battery stack is available in -12 V, -24 V or - 48 V. For info, actually any telecom equipment or for that matter any sophosticated equipment runs on a range of supply voltages by using their own inbuilt SMPS and it is very difficult to maintain a constant voltage by the power source.
BIBHUTI BEHERA - 3rd August 2014 (15:22 GMT)
1* In negative voltage due direct current less noise occurs... As a result telecom equipment gives high output..
2* corrosion less on eqiupment
3* It protect the equipmet fom lightning.
Abid Hussain Khan - 1st February 2012 (05:40 GMT)
Thanks to all for clear my confusion about why telecom equipment use -ev voltage but my question is why it is 48vDC (2*24), why not 50vDC (2*25)??
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