transformer

  1. S

    Alternative dimmable transformer with dual input

    Please help! A number of my mother's lights in her kitchen are no longer working and I suspect the transformers need replacing as I had a similar problem in our kitchen that I fixed by changing them. I took a couple of her spotlights out to see if she could use the same transformers as I have...
    • sarahm
    • Thread
    • alternative dimmable input transformer
    • Replies: 2
    • Forum: Lighting Forum
  2. D

    Is this box my bell transformer?

    Hello All Always risky posting a picture especially this one with the cables not clipped nicely etc. Can only assure its not my work and was done 20+ years ago. Anyway, caveat out of the way ,is that black box the transformer for the bell? And is it being fed by that socket outlet plate...
    • Deleted member 112675
    • Thread
    • bell box transformer
    • Replies: 21
    • Forum: UK Electrical Forum
  3. J

    Transformer neutral reading 28v

    I’ve seen a 110v control transformer reading 28v on the neatral to earth and 67 on the other leg. Why would this be?
  4. J

    Can you Change a 55v 0v 55v transformer

    Can you Change a 55v 0v 55v transformer to 110v by just connecting the earth to one end of the windings on these type of transformers?
  5. F

    Need Help: Mechanical Chime Won't Ring After Transformer Replaced

    Hi. Here's some background info. I am located in the United States, and have had a Nest Hello video doorbell working perfectly for a couple of years. It's powered by a 16V 10va transformer. I also have a mechanical door chime that rings when someone presses the button on the Nest Hello. The...
    • ftresi
    • Thread
    • after chime doorbell help mechanical need help replaced ring transformer won't
    • Replies: 14
    • Forum: DIY Electrical Advice
  6. O

    What transformer is needed for these lights please?

    When I set up my Christmas outdoor lights this year, i realised that I must be using the wrong transformer as half the lights on the string are not powered or dull. Looking at the label on the lights, I can see it says 36V ac 11.52 W. The white plug you can see the lights going into on the image...
  7. N

    Neat doorbell transformer

    Customer needs a transformer for a new fancy door bell. Current transformer and chime mounted on wall next to door so nice and easy but my question is... Is there a din rail mounted chime I can put in an enclosure with the new transformer, thus swapping the wall mounted chime and tranny with...
  8. K

    Looking for old transformer

    Hello- please help! Got the Xmas tree up which has inbuilt lights but can’t find transformer. Searched on line and still can’t find. Photo of details attached. Not sure what to do. Is this a lost cause? Xmas tree is 15 years old. Any help gratefully received. Thanks
  9. sajeel

    transformer tripping mcb

    Evening peeps, Got a question i need help with a friend of mine has an american food processor the unit is 1000w 110v i purchased a 3000 w 230 to 110v step down and stepup transformer have set to 240v on input and using 110v output. I am finding due to surge sometimes on start up the...
  10. C

    Feed a 10KVA Site transformer

    Hello People, I have a 10kva site transformer with a 32a 2P+E plug with a 3G4mm2 H05VV-F(yellow) as input. A temporary DB will feed him and a socket with the same characteristics will be provided but not sure if I still need to keep the same cable colour( DB is on 230v). Thank you
  11. E

    Using a transformer with a smart plug

    I recently had some landscape lighting put in and wanted to hook up the transformers to a smart plug so I can control them with my phone and have them on a timer etc. Currently, as setup by the electrician, the two transformers are in a double adapter plugged into a normal wall socket and it...
  12. togggo

    Halogen Transformer

    Hi, I'm hoping someone can offer me some advice. The transformer for the lights in our bathroom has gone and I'm looking to source a replacement. However I can't find a like-for-like one to replace it, so looking for some suggestions for which one to get. The current one is a ring DET-200...
  13. F

    buck boost transformer hookup....

    I have a 45kva GE transformer in the pics https://www.facebook.com/photo?fbid=10218414252692170&set=pcb.10218414261612393 and https://www.facebook.com/photo?fbid=10218414252972177&set=pcb.10218414261612393 here. Its set up for 480 to 208, i need to wire it for 250v to 208v. When I hook it up to...
  14. M

    Can my step-up/down transformer be repaired?

    Hello there, I brought a 5000W step up/down transformer with me for my appliances when I moved back from the US earlier this year. I'm living in an old house, don't think the wiring is up to much, and from the beginning the transformer would trip the circuit board switch, though I could just...
  15. K

    Help on wiring multi-volt transformer

    Trying to wire up an outdoor flood light, I have a 240 volt line in (two hot one ground) any guidance on how to connect to terminal block?
  16. Dartlec

    Flush mounted enclosure for ring transformer

    Had a quote today at a new build where they've not bothered to put any facility for a doorbell. Customer has purchased a Ring Wireless Pro, which comes with it's own 24VAC DIN rail mounted transformer. Given the location of the CU, it is not the simplest path for a cable run, so looking at...
  17. T

    Swap a 3 stage LED transformer.

    I fitted this light in my hall: https://www.lights.co.uk/concha-led-wall-light-28-cm-switch-dim.html?sku=9005749&&utm_term=b_%7bAdId%7d&gclid=CjwKCAjwkJj6BRA-EiwA0ZVPVtXVCCKS9lZFra7xUkXhozOrULFhD9n6b2FelZiWJn9Sqn7mpbSAkhoCgzEQAvD_BwE&gclsrc=aw.ds It has 3 modes 100%, 50%, and 25% brightness. To...
  18. C

    Please explain this transformer from a scientific instrument

    First post, DIY. I harvested this heavy transformer from an instrument that we took out of commission. I live in a 220v country and I want to know if I can use this safely to run 120v tools (like routers etc). 1. It states 2kv. Is this ~2000 or ~4000 watts? (i.e. do I multiply by 120 or...
  19. D

    I need help with how inductance works in a single phase transformer

    I currently have this, Primary inductance on an AC transformer will determine the magnetizing current on the unit. Usually inductance is relatively high so the magnetizing current can be as equally low. This inductance can be seen as part of the magnetizing current; however, it will not be seen...
  20. UKMeterman

    UK DNO transformer + switch missing HV earth

    An interesting sign has appeared on a local DNO distribution transformer, earths missing from Transformer and HV switch. Is this what is meant by a hot site?

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