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  1. #1
    Junior Member

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    Default Voltage fluctuation: IS there a good voltage Stabilizing UPS?

    When I use my Netgear DG834G during day time, if there is a voltage fluctuation (low voltage), the power light goes off and it reboots. During night time(after 11 p.m. and before 6 a.m.) there will be hight voltage (because of it my router adapter went bad). Local JTO said that I shouldn't use internet during night time because there will be power in the neutral line as well. Is there a good UPS which will help me to get around this problem (both power backup and voltage stabilizer)?

  2. #2
    Platinum Member

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    Default

    There are a lot of them.. APC is the best i believe!!

  3. #3
    Junior Member

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    Default

    Thank you

  4. #4
    meetdilip
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    APC will be a wise choice.

  5. #5
    LEARNER

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    Default

    BUY "ONline " UPS.
    Power available from unit whether Electricity
    board power is available or not ( * time specified )


    online ups is a double conversion(dual) ups which firstly
    converts AC power to D.c ,then D.c to A.C .the stored D.c
    form of electricity remains within the batteries. in

    what is the difference between ONLINE UPS and OFFLINE UPS?
    online
    ups systems load is always connected to inverter. in online
    ups system the power supply goes to the end user through
    the battery,if there is A.c power cut ,then no harm or
    interruptibility occurs .

    APPLICABLE IN CRITICAL INSTRUMENTS LIKE C.T SCAN,X-
    RAYS,ULTRA SOUND,OPERATION
    EQUIPMENTS,SPECTROSCOPES,COMPUTERS ETC......

    by SAMEER HUSSAIN
    (M.E)
    SNA POWER ENG. PVT LTD LUDHIANA

    while in case of offline ups sytems the raw A.c supply is
    connected by a realy type of mechanism,then the battery and
    inverter is bound tothe msin supply. so when there is A.c
    Power cut ,the really needs a time gap of 3-5 ms to shift
    it to battery mode.

    Source :
    Google search term : onlineUPS offline UPS

  6. #6
    Junior Member

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    Hello essbebe, can you tell me what will be the price range of an online ups. I would go for the one which gives 20 minutes power backup?

  7. #7
    LEARNER

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    compared to a normal UPS
    ONline double conversion UPS costs almost five to ten times more.



    If you use laptop with battery backup,
    connecting the Modem directly to UPS battery,
    with suitable modifications,will keep your
    connection going so that you don't loose data.

    Mention modem model make and power required.
    9V or 12V AC or DC amperage about 1 amp.
    Polarity of plug ( Inner positive /tip usually ).
    or even a small 12V motor cycle battery will do !
    Last edited by essbebe; 6th September 2011 at 09:23 PM.

  8. #8
    Guardian Angel
    just4kix's Avatar
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    For a home setup, a standard 1 KVA UPS from a reputed company such as APC is more than sufficient. UPS have built-in stabilizer and the sine wave is also maintained at 50 Hz.

    If someone wants additional safety, buy a spike guard also.

  9. #9
    LEARNER

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    Update :
    DG834g -(minus) 12 V DC 1 AMP . Check polarity of plug.
    Easy to connect to Battery. ( no additional requirements) .
    Any UPS will do for the computer /desktop,
    as modem will not get disconnected due to transients .

  10. #10
    Junior Member

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    Netgear DG834g v4 requires 12 volts (DC adapter), and I use a laptop. When there is power fluctuation (low voltage) the laptop (dell vostro 1400) does not go into battery mode. Even If I use utstarcom mode, it also doesn't reboot. But when I turn on refridgerator or CRT tv, or if someone turns on electric water pump in our area DG834g reboots. I don't have UPS now, like to buy one.

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