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Running 36v Xmas lights on 24v transformer

We've lost the original transformer for our Christmas lights, will there be any problems with running on a differently rated transformer? Lights are LEDs and both lights and transformer are rated at 1 amp.
posted by Kiwi on Dec 8, 2013 - 7 answers

Electronicsfilter: AC adapter compatible w/ off-brand (System76) laptop?

Can you help me figure out which affordable AC adapter would be compatible with a System 76 Bonobo Extreme laptop ? [more inside]
posted by foursentences on Nov 2, 2013 - 4 answers

Transformer in basement ceiling buzzing--what is it?

I heard this weird buzzing sound coming from my basement today, and I eventually opened up the ceiling and traced it to this transformer or something that's up in there. I tapped it with a piece of non-conductive material and it stopped buzzing. Tapped it again, it started buzzing more quietly, and then I tapped it again and it was silent. Anyone have any idea what this is, and why it's there? The house is from 1952 and doesn't have any electrical issues that I know of. Pictures: Pic 1 Pic 2 Pic 3
posted by Slinga on Oct 23, 2013 - 7 answers

Will my appliances work in Europe?

I'm moving to Germany in a couple of months and have a few questions about using various 110V US-purchased appliances on the local 220V power. Specifically the 50Hz/60Hz issue - how big of a deal is it? My understanding is that anything with a motor may have a shorter lifespan and run somewhat less efficiently (and of course anything that uses AC for timing will run slow), but any other issues? [more inside]
posted by photo guy on May 13, 2013 - 10 answers

This is why I can't have nice things

Hiya. I have a Transformer Prime tf201 that doesn't want to turn on. Please help! [more inside]
posted by grippycat on Sep 6, 2012 - 2 answers

How to dim 12v Halogen lights?

I have ten 30 watt 12v halogen lights connected to a transformer that is rated for 300 watts. The transformer seems fairly old. I want to be able to dim the lights. What kind of dimmer do I need and how do I wire it up?
posted by Infernarl on Jul 28, 2012 - 4 answers

Ring my bell

Where might I find a replacement (low-profile) doorbell transformer that is similar to this? It is about the size of a Matchbox or Hot Wheels toy car and has FRONT, REAR and TRANS connectors. The replacement transformer I bought looks like this, which is about the size of a tennis ball and has white, black and green wires, but no FRONT, REAR and TRANS connectors. Big chain hardware stores shrug their shoulders, lighting stores only carry the big TF I linked to, so where might someone go to find something like this, to fix an older doorbell? [more inside]
posted by Blazecock Pileon on Jul 15, 2012 - 5 answers

Help me make the most out of my Android Tablet

Help me make the most out of my Android Tablet [more inside]
posted by Cogentesque on May 23, 2012 - 8 answers

Case (like iPad) for a Asus Transformer Prime

I'm trying to find a slim case for Asus Transfomer Prime. Slimmer the better. I really like the iPad2 case. Silicon material like iPad case is preferred over leather. This would be ideal, but the reviews are not that good. Thanks.
posted by WizKid on Apr 19, 2012 - 2 answers

is a refurb Asus Transformer tablet worth buying?

Android tablet question. Is a refurbished Asus Transformer worth buying? [more inside]
posted by altolinguistic on Feb 12, 2012 - 9 answers

Help Installing Nest Thermostat on Millivolt System Using 24v Transformer

I just purchased a new Nest thermostat. My old thermostat gets power from an ancient millivolt system (thermopile on top of pilot light generates 0.7VDC). This is incompatible with the Nest, since the Nest requires standard 24VAC. Nest support told me they've heard some customers have had success using 24v step-down transformer. After lots of research, I think the wiring is supposed to go something like this: W from furnace (common, -0.7VDC ?) --> W on T-Stat 24 VAC power from transformer (+/- ?) --> C on T-Stat R from furnace (+0.7VDC ?) --> RH on T-Stat 24VAC power from transformer (+/- ?) --> RH on T-Stat As you can see, I'm still a bit fuzzy on the details. Questions are below the fold! [more inside]
posted by jesseendahl on Jan 22, 2012 - 17 answers

oh brother

Need a step-down converter for plugging a printer sold in the US (110V power) into a 3rd-world socket (240V power). I get the voltage part but watts and amps and such are a bit beyond my electronoobicity. [more inside]
posted by allkindsoftime on Jul 27, 2011 - 18 answers

What happens if I screw in a 110 volt bulb to a 12 volt power source?

I'm setting up my "off the grid" solar lighting system in my home, and I'd like to connect the battery to some LED lights. It's a 12 volt DC battery - Do my lights have to be 12 volt also? If they're LED bulbs, they'll have a transformer inside; will that allow me to use them, or do I have to have a voltage converter or something? I've got some edison-style LED bulbs around the house for 85-265 volts. Thanks in advance for any help. pictures and web links that can explain things simply are helpful. (An earlier, relavent post: http://ask.metafilter.com/182209/How-to-run-some-lights-from-a-solar-panel)
posted by eggrollover on Jul 5, 2011 - 4 answers

custom transformer figurine

Im a big transformer fan and i was wondering if anyone makes custom transformer toys ... optimally (lol) id like ones made out of metal but platic would do even a 3d model i could transform and make it do stuff would be fun maybe sit on my desktop on my pc and i dont mean repaints and newly made old toys i mean trans formers that i make up
posted by quseio on Nov 17, 2010 - 7 answers

Make an awesome kid's birthday wish come true!

Please help me fulfill my almost 4-year-old's only birthday wish: "a car that turns into a truck." [more inside]
posted by justonegirl on Sep 16, 2010 - 13 answers

Eject the core!

I'm looking to buy a silicon steel lamination core from a transformer. I frequently give presentations that discuss the design of these transformers and I'd like to have a sample to show the audience. Where can I buy this online? [more inside]
posted by Aanidaani on Feb 25, 2010 - 7 answers

Thanking Count Alessandro Giuseppe Antonio Anastasio Volta

How can I identify the approximate properties of an electrical transformer? [more inside]
posted by anadem on Feb 22, 2010 - 5 answers

Would a US dishwasher work on 220v with a transformer?

Bringing a US Dishwasher to a 220V-powered country, providing I have a well rated transformer will there be any issues? Bonus points for FUD-less answers :) [more inside]
posted by shimon on Sep 21, 2009 - 17 answers

Epson Artisan 800 All-in-One Printer bought in USA? How to use in U.K?

Just returned from fabulous 2 week holiday in New York. I Brought back Epson Artisan 800 All-in-One Printer from Staples costing $230. Unfortunately, I cannot use it in U.K., unless I plug voltage converter/transformer products. Has anyone else bought this set over there with more success? Any advice \ information appreciated. Please specify me What exact voltage converter product to buy & where to buy it from USA online store. Thanks. [more inside]
posted by omaralarifi on Jan 28, 2009 - 4 answers

Electronics geeks urgently needed in Aisle 4

I am packing my entire house and moving to the UK, and I'm hoping to bring my TV, stereo, and a few smaller appliances with me. Please help me figure out my US to UK transformer and voltage requirements! [more inside]
posted by Kevin A on Oct 18, 2008 - 24 answers

Bringing U.S. laptop to Buenos Aires

What king of laptop adapter/transformer do I need for Buenos Aires? I have a U.S. Apple MacBook Pro with a THREE-pronged grounded cable. [more inside]
posted by cookie googleman on Sep 29, 2008 - 5 answers

Is it safe to use a step-down transformer with a Hair Styler?

My girlfriend has a GHD hair straightener purchased in the USA, it's labelled "120Vac 35W", I want to use it in Ireland (where the standard voltage is 220Vac). Is it safe to use this with a step-down (220V -> 110V) transformer? [more inside]
posted by nfg on Aug 21, 2008 - 11 answers

How can I use this UK appliance in the US?

British appliance, US power: can they find happiness together? [more inside]
posted by bac on Dec 9, 2007 - 15 answers

Not That Kind of Transformer!

ElectronicsFilter: How do I drive a step-up transformer to get hundreds of volts out of an AA battery? They're only 1.5v. [more inside]
posted by spacewrench on Sep 3, 2007 - 7 answers

Help me help myself ROCK OUT

Follow-up-on-somebody-elses-post (filter): Okay, so I'd like to make an eBow from scratch. Here's the schematic available. Can you help out? [more inside]
posted by tmcw on Aug 2, 2007 - 10 answers

International voltage converters/transformers..

Advice on voltage transformers for using US kitchen appliances in Europe? [more inside]
posted by sdis on May 30, 2007 - 10 answers

I need a UK to US transformer for a rechargeable drill.

TransformerFilter: I've just relocated to the US and have a rechargeable drill that uses a 17V DC transformer. I need to replace the transformer, since the one I have runs on 240V power (and has the UK prongs). The problem here is that I can't find a suitable replacement at the likely suspect places: hardware stores, Radio Shack...

I know that the voltage must match precisely and that the amperage must be at least as high as the noted amperage, and that the polarity must also match. So where can I go to find a good transformer? I'm in NYC, but I prefer to shop online.
posted by yellowcandy on Nov 28, 2004 - 9 answers

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