Results 1 to 11 of 11

Thread: UPS help please???

  1. #1
    Registered User
    Join Date
    Nov 2003
    Location
    Dublin, Ireland
    Posts
    24
    Thanks
    0
    Thanked
    0 times in 0 posts

    Arrow UPS help please???

    i'm looking for a UPS system for a webcam [with built-in modem]
    it IS NOT for a pc, only the cam.

    my question is:
    can you get ups's for this low a power demand?
    and, where are they?
    it also needs to be pretty compact.

    please help,
    dave

  2. #2
    Senior Member
    Join Date
    Mar 2004
    Location
    Cork
    Posts
    1,467
    Thanks
    0
    Thanked
    0 times in 0 posts
    You mean you just need to power the webcam/modem? Does it have a 240v input or is it powered by a transformer/voltage regulator?
    Presumably a normal PC UPS will not do or is too expensive although it depends how long you want to run it without mains power. A normal PC UPS would run something like that for a long time though.

  3. #3
    Registered User
    Join Date
    Nov 2003
    Location
    Dublin, Ireland
    Posts
    24
    Thanks
    0
    Thanked
    0 times in 0 posts
    5V, 0.3A, 1.5W.
    comes with transformer.
    only need it to run unpowered for about 1 hour.

    i was also gonna look into the systems that house alarms use
    when the power goes out.

    views?

  4. #4
    Senior Member
    Join Date
    Mar 2004
    Location
    Cork
    Posts
    1,467
    Thanks
    0
    Thanked
    0 times in 0 posts
    Hmm doesnt take much power. The actual circuitry that is used to work a UPS seems rather unusual in every day applications and i doubt youd find something designed for an application so low powered. You could always make it up yourself if you have any electronics experience all youd need would be a smallish (preferably lead acid) battery and a relatively simple circuit on the low voltage side of the line. If you were willing to keep the battery charged yourself you could get away with just a few diodes i think.

    I should imagine you could find designs for such a thing on the web.
    I dont know about house security systems but they are probably decent sizes ie to power all the sensors alarms etc for possibly longish periods.

  5. #5
    Registered User
    Join Date
    Nov 2003
    Location
    Dublin, Ireland
    Posts
    24
    Thanks
    0
    Thanked
    0 times in 0 posts
    i'm spec'ing this for a few hundred units, so diy soldering is not an option.
    i'm looking for a "black box" solution [pre assembled]

    i found this, which is close to what i want:
    http://www.apc.com/resource/include/...sku=BF350%2DUK

    but i need a single plug version.


    dave

  6. #6
    Senior Member
    Join Date
    Feb 2004
    Posts
    887
    Thanks
    0
    Thanked
    32 times in 29 posts
    You can get upgrade kits to turn an ordinary flourescent luminaire into an emergency luminaire so that it remain on in the event of a power failure. A emergency luminaire conversion kit looks nothing like what you want but it is similar in function. Good luck.

  7. #7
    Senior Member
    Join Date
    Mar 2004
    Location
    Cork
    Posts
    1,467
    Thanks
    0
    Thanked
    0 times in 0 posts
    I found this which is relatively small but i couldnt find any decent specs probably only works on 110V or so.

    This seems a bit more promising. It is small and works on the low voltage side of your circuit so no big sockets etc. (maybe that would be a disadvantage for you). The problem is you would need to pair it with a battery such as one of the smaller lead acids from herehttp://international1.farnell.com/a2...jhtml?PAGEID=1 and then put the whole lot in a small case which im sure you can also get from farnell. It would be a bit of work but still possible for c 100 units.

  8. #8
    Registered User
    Join Date
    Nov 2003
    Location
    Dublin, Ireland
    Posts
    24
    Thanks
    0
    Thanked
    0 times in 0 posts
    This is another option, which would get rid of the adaptor supplied with the webcam.

    http://www.maplin.co.uk/products/mo...4486&Products=2

    not enough info on this page, so i emailed asking for more info... we'll see.
    anyone else knoe if this would be suitable?

  9. #9
    Senior Member
    Join Date
    Mar 2004
    Location
    Cork
    Posts
    1,467
    Thanks
    0
    Thanked
    0 times in 0 posts
    Link doesnt work i'm afraid.

  10. #10
    Registered User
    Join Date
    Nov 2003
    Location
    Dublin, Ireland
    Posts
    24
    Thanks
    0
    Thanked
    0 times in 0 posts
    search for
    "6V 4Ah Batteries and Charger"
    on maplin.co.uk

    1st one in the list

  11. #11
    Senior Member
    Join Date
    Mar 2004
    Location
    Cork
    Posts
    1,467
    Thanks
    0
    Thanked
    0 times in 0 posts
    Yeah looks the job. But if all it is is a battery charger you might have trouble in that youll have to draw power from the battery at the same time that it is being charged which could confuse the charger. Ie the charger could be fooled into overcharging the battery because of the drain on the battery circuit during the charge or normal operation of the device.

    I see what you mean about the provided specs I dont how anyone could buy it with just those!!

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Nasty Pop up's and extra web pages!!
    By Jimmy Little in forum Software
    Replies: 13
    Last Post: 08-04-2004, 10:19 PM
  2. UPS, how do I hate thee...!
    By nichomach in forum General Discussion
    Replies: 4
    Last Post: 01-02-2004, 08:36 PM
  3. UPS incompetance?
    By streetster in forum General Discussion
    Replies: 5
    Last Post: 29-01-2004, 07:07 PM
  4. yes im tired of all the pop ups HELP!!
    By CrapshoT in forum Software
    Replies: 10
    Last Post: 27-10-2003, 01:58 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •