Never Replace Batteries Again! Convert Battery Device To Wall Adapter!
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- Опубліковано 28 чер 2024
- Do you have small battery powered devices that constantly need fresh batteries? Stop spending time dealing with buying or charging and changing batteries, and convert that device it to run off of an old cell phone charger!
#NoMoreBatteries #LessHassle #NeverNeedsToCharge
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CHAPTERS
🕐 0:00 Introduction
🕐 0:57 About The Tree
🕐 1:37 Be Safe!
🕐 2:04 Determine Voltage
🕐 2:31 Find Power Supply
🕐 3:01 Verifying Power Supply
🕐 3:32 Making The Connections
🕐 4:59 Testing and Conclusion
🕐 5:20 Bloopers
You can help me with future projects!
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Man, that was awesome. Right to the point. No mumbo jumbo or annoying background music.
Thank you. 👍👍👍👍👍
Glad you liked it!
YES!!!!
I was gonna say that. Learned how to do this in 5 minutes.
Can I put two 10 light strands that require 2 AA each in parallel so they then require 6 volts from an adapter (since it’s hard to find one that puts out 3 volts)?
I love mumbo jumbo, back off
I did this for my automatic trashcan, which normally needs 6 D -size batteries. The DC power supply cost less than a pack of 6 D-size batteries. So worth it for things that don't need to be moved around often.
Heya Ninja Guy - that's a perfect place to use something like this. Nice job!
I'm here watching this video because of this same exact thing... I'm replacing those batteries in my trashcan at least every 2-3 months. Such a waste.
One of the best DIY channels on youtube. Simple and useful.
I am a complete novice, but this was AWESOME. Really clear instructions and use of tools!I especially appreciate the re-use of cords from the thrift store! ( although I probably have a whole box of appropriate abandoned cords in my house already😁)
Awesome, thank you!
Did a search and this is EXACTLY what I'm looking for. I have 3 pre-lit fairy light Christmas wreaths that hang outdoors on a fence and they eat through batteries fast! I will do exactly how your video explains as I have the same set up. Now I just have to figure out how to get all 3 to an outlet. I will use extension cords of course, unless you have a better suggestion? Also, I followed your tutorial on adding LED lights to a snow blower powered by a Dewalt battery. PERFECT! I got it to work and thanks to your video, the install looks factory! Now we just need some snow so I can use them! Thanks again for your time making these excellent videos!
I'm so glad that you were able to add lights to your blower - that's awesome! As for your wreath lights - an extension cord is about all I can suggest... though I do recommend protecting the power adapter from the elements in a waterproof junction box or something similar. Good luck!
Solid advice and is one of those life hacks that seems to have been forgotten. I have been reusing old "wall wart" sty,e adapets for years and as long as you keep the voltages correct it works like a charm.
This is great and so appreciated. I've been looking for something like this for a long time. Thanks.
Glad you found it helpful, Rey! I'm happy to answer any questions that pop up for you when you do a similar conversion. Good luck!
Had the exact same problem with my seasonal decorations. Just had it all converted within minutes thanks to your video. Thank you so much for sharing your knowledge…you rock!🤘🏻
Great to hear!
I'm doing this research to power a motion-sensing outdoor light that for some reason is powered by batteries and doesn't offer an adapter option. Notes to people attempting such a mod, battery compartments could be in series or parallel or a combination. Like, 4 AA batteries could output 1.5v in parallel or 6v in series or something in between. Also, consider the resistor you need to replicate the batteries' resistances. I think a AA battery has about 0.1 ohms. I suppose the adapter may account for that, but for delicate electronics I would want to cover all my bases. Its one thing to convert an outlet-powered device to using batteries, its a whole other to do the opposite. Don't burn your house down.
Hello. We're you able to convert your light to power? I have one that I want to do just the same and the label says is 4.5V. Is a pain in the behind changing batteries every 2 weeks. Please let me know.
Awesome! I've just recently got into soldering and circuts so this is definitely a project I'd love to try!
It's a quick and easy one that is perfect for a beginner. Good luck!
Thank you for this! I have two keepsake Christmas decorations that have long lost the dc plug. They work better than ever now!
That's awesome, Jennifer!
Awesome explanation of what needs to be done! I didn't have a clue how to convert my holiday snowman who runs on batteries to a plug in - so much better! Haven't done it but will be doing it soon. Love the explanation of how to calculate what is necessary.
Nice! I’ll be using this idea for sure
Making it look easy! Great vid
I am very novice at messing with electronics and i found this so easy to follow and helpful. Great video.
Glad you enjoyed it!
ty sir thats what i figured but i wanted to make sure i was right, the findding out the power requirement helped for sure.
Thank you for this info very useful calm and soothing presentation.
You're very welcome!
Beautiful. Thank you. Merry Christmas!!!
Merry Christmas to you as well, Michael!
Well done. I feel I can do anything 👍
Excellent demonstration
Love it! Simple and knowledgeable 😄
Good tutorial! 👍 A small tweak to take the finished result up a notch would be to use a small rubber grommet in the hole that was drilled in the base that has the same inner diameter as the wall adapter's wire. I did that for another project and it looked good and also helped hold the wire in place.
Great idea!
thank you for this. So tired of forgetting to turn off my holiday decorations and only getting a day out of the batteries!
Glad I could help!
I recently discovered your channel.......and am I glad that I did. Thank you, keep up the good job.
Disclaimer: Accept this compliment at your own risk, I am not responsible for any happiness on your behalf that may result from reading this.
I gladly accept all risk of happiness that results from your comment. Thanks for watching!
thanks a lot, i did that to my guitar amplifier that only ran from battaries, it works like a dream
I have the same little tree and it's the reason I went looking. Grateful viewer!!! Thank you!
Glad it was helpful!
This is AWESOME! Thank you!
Glad you like it!
Thank you for sharing. My dad recently passed away and he did all these things for me to do with replacing battery with power supply. I never understood how he did it. Miss him so much. Thank you for sharing. I’ve learned a lot from this video and I’m going to endeavour to try it.
I'm sorry for your loss.
Neat! I have some string lights that I was going to put across my window and realized they won't last long since they're battery operated. I might look into getting the supplies to do this since I've soldered lights exactly like these before to repair them and it doesn't seem any harder than that. It might look a little funny comparatively, but it'll be worth it so I can actually enjoy them!
Great, I converted my elliptical curve with this simple trick.. I used to change 4 batteries every month.. felt good my fix is working good.
Thanks for detailed video
Nice work!
Thank you for this great idea!
Thanks for watching, Charles!
Awesome. Exactly what I needed.
Great to hear!
Awesome 😃❤ I will do the same to my automatic chicken door. Thanks alot ❤
Thx, just what I was looking for
This is great. They also sell adapters on Amazon that have dummy batteries and an adapter.
I often return here just for the blooper reel. 🎬👏
Thank you
Great video. We got a kaleidoscope projector light thingy that shines on the ceiling for 99 cents. Creates a nice effect but I didn't want to eat up AAAs with it. I saw that adapter kits with dummy batteries are $15. I chopped the end off an old USB cable and dug out the soldering iron. Working great. Thanks.
Very cool!
Nice! I can't wait to do this to my RC car!
Kidding, but definitely something I've considered doing with various battery-powered items around the house. That decoration is quite the perfect use for this modification!
Congrats on reaching 100K subscribers!
Thanks Cars Simplified!
@Cars Simplified - Don't laugh, I use to have an RC Car with wires connecting to the hand-held power supply and steering. It was the 80's, times were simpler. As a young lad, I wasn't aware that RC actually meant Radio Control. And even if I did,... I still wouldn't know what it actually meant. However, I do remember my first OFFICIAL 'Radio Control' vehicle. Except, Christmas day was RUINED that year! Because my brother and I got the EXACT SAME RC Truck from Radio Shack. And they BOTH had identical frequencies. So, we could only use one at a time.
@@CovertRadio You've brought up some memories for me as well! My first RC car was the "Lobo II", sold at Sears. I begged and begged for it for my birthday, and managed to break it during the first drive. Jumped it over the curb in front of my house, and it broke one of the axles. 😂 Good times.
Useful info
I just threw a adapter in the trash, after seeing this went and dug it out and going to use it to convert my tree just like yours. Thanks for the simple instructions.
Nice!!
I love your videos very informative. And I like your vice grip garage hat too.
Well, I'll be dipped!
Cool vid. Thanks very much
Brilliant!!!
I ❤ u. Thanks just what i was looking for.
Thank you for the bloopers!
Hey man, the structure and overall purpose of your video is great! I am definitely subscribed and will be sharing AmplifyDIY any chance I get. Thank you for not only showing safely how to achieve the desired conversion, but also emphasizing the importance of being educated and familiar with electricity before modifying or altering anything.
Thanks, Dustin!
Thanks🔥🔥🔥🔥🔥
Great video! Cool tips and links! Great blooper track XD!
Thanks so much!
Thanks my man.
Excellent mate
Many thanks!
just what I was looking for! ... no annoying droning on about some unrelated drama... lol
.... gotta luv a guy that knows how to get to it with good info. (signed, mrs. nathanderthal)
Thank you Mrs. N!
So dope.
Blessings From Texas 🤠
Howdy, SSG Wright - and thanks for watching!
L❤L ❤ the style and simplicity of your video
Thank you so much!!
Thanks!
Hi Mona - THANK YOU! You are amazing!
Would have loved seeing this particular example converted to micro USB. 5V should be within tolerance.
Interesting idea, Dakota! That would make things only *slightly* more complex in that you'd have to install a micro usb receptacle in the housing of the device...and soldering something that small can be a bit fiddly. However, I have several other little devices kicking around that may be good candidates for such a conversion. Thanks for the suggestion, and thanks for watching!
Can't wait to do this
Awesome!
Nice job, and well worth avoiding frequent battery changes! Maybe some ideas for future videos:
Sometimes instead of an A.C. adapter, I'll use a battery holder for larger batteries. I.e. your 3x AA decoration will likely run for weeks on 3x D cells, which could get you thru the season without changing batteries.
If 3 AA rechargeable don't work well, 4x might do better.
Another option is a USB powerbank. 4.5v being "close enough" to the 5v put out by said USB powerbank, just wire it up like an adapter, but now you have a big battery.
Final option if you know how to safely work with "raw" LiIon cells, 4.5v is "close enough" to use a single 4v LiIon cell with a simple single-cell BMS and TP4056 charger module (get one with "battery" and "load" terminals and wire the decoration as the "load" so the board can turn it off when the battery is depleted).
I lied, there are more options but they get more complex. Such as using a LM2576 step down (or "buck") DC:DC converter connected to a power tool battery and adjusted to output the desired voltage for the gadget.
Fantastic ideas! Many of them are outside the reach of a typical homeowner, but for a hobbyist or advanced tinkerer these are great. Thank you!
Thank you Les! You made this so easy that I converted all of my small tree ornaments to DC! Now my only problem is that I'm running low on outlets.
Glad it worked out for you!
Hi! I have Christmas ornaments and led lights too. But they all have 2 batteries only (3V in total) and I have 5V phone chargers and I can’t find 3V ones. Do you think there could be issues ? They do shine a little brighter but other than that they seem fine. Than’ you for your help
Yes, thanks Les, now, along those lines... if I had a series of packs (each of the same input requirement), could I power multiple units from a single supply, or would I need a converter for each unit.
@@albavel consiter using a zener diode to lower the voltage to your 3v target. This way you are not overdriving the lights. I learned to use a 0.3v variance per AA(A) battery as a rule of thumb.
@@jimbosander if the converter's amperage is high enough to support it, then runing the different packs in parallel should not cause any issues.
thank you ssssoooo much😊
You're so welcome!
Great video. Goodwills are a great way to source the adapters. Batteries are way too expensive to keep replacing them for these sort of things.
One thing to note is how many milliamps the power supply outputs too. A 1000mA unit is ideal for anything that has a larger load. Some phone chargers only output .1mA and sometimes that isn’t enough current to run certain items.
This is a good point. Make sure you read the label on the power supply carefully!
Nice job
Thank you! Cheers!
Awesome video Andy. Thanks!
Awesome!
I wanted to do this also to my door bell (AAx3) device itself, I even found the same EXACT wall adapter that you used (LG 4.8v | 0.9A) multi meter shows 4.83v so it's good...but, once I did a test run...nothing happens, any ideas?
FYI: Door bell one with 30 pre-programmed rings in it, button on device you click to go threw them all. With the batteries in, I quick click on the button and the door chimes just fine, but with wall-power, once I let go of the button it stops sounding...and ideas? I even tried a 5v|1A power wall adapter, same result ;(
Hmm... the only thing that comes to mind is that the doorbell may possibly be drawing more amps than the power supply can provide... but then it would eat batteries very very quickly - so I doubt that's the case. Still, I'd try finding a 5v 2A supply and see if that makes any difference. Also make sure you don't have any loose connections....
Good luck!
i want this done to my BB POD
I'm a great big chicken so would never do this myself, but I have to thank you for your very clear instructions and those fabulous bloopers included at the end!
I love bloopers! 😆
Thanks for watching, Diane!
Thank you! I needed a good laugh 🤣😂🤣😂
Sorry I posted this on wrong post. 😬
LOL. :-)
Good tip. Can I use a 5 Volt adapter, For a Xmas Dec that is 4.5 V = 3 AA batteries?
Hi Karen - yes, a 5V adapter should work fine for your situation. Good luck!
Awesome tutorial! I have no idea what I’m doing, but I’m gonna try! (My brother in law said he would supervise… even at 47, I should be left alone with sharp objects or hot-touchie things… okay… I’ll be honest… I shouldn’t be left alone, unsupervised, EVER) LOL
Anyway! Great video, and love the outtakes 🥰😂
You've got this, Jacqueline!
Can't argue with results
Thank you very much for making this video. I've been searching for a way to convert my little battery garlic blender to something like this. Just to confirm, at 4:08 when you were testing to see if the light will turn on, you plugged in the travel adapter at this moment right? is there anything to be cautious about at this step? Thank you.
Very Nice , I like It :)
I’ve seen another video where they used a resistor for string lights, which is what I’m looking to convert. If you use a power supply that is exactly what I need do I still need the resistor? I didn’t see you use one here so I’m not sure if it’s necessary, thank you!
Hi Chloky - You've got the right idea: if you use a power supply that is matched to the voltage your batteries usually supply, there is no need to add a resistor. Amazon has lots of power supplies to choose from, in all kinds of voltages and amperages. You should be able to find something that matches exactly. Good luck!
I dont know how dangerous 4.5volts is 😅 could maybe pop a capacitor in the dc power supply if you short it maybe. But you should also check how many amps you need. It's also good to check if rhe batteries are series or paralell. As 2 batteries may not mean it takss 3volts. It may be 1.5v using multiple batteries for higher amperage.
Hi, great guide! quick question: Can I exclude the entire box and keep my led strip directly connected to ac power? I noticed there is a resistor connected to the switch but I dont really need it as I will have it plugged to smart plug?
Hi Adam - No, a resistor will not convert the mains AC power to the lower voltage DC power that a typical LED strip needs. You *must* have a DC power supply that matches the voltage requirements of the LED strip. Good luck, and thanks for watching!
@@AmplifyDIY Thanks for the feedback. I connected 5V to a strip that was powered by two AA bat - works fine. Thank you again, and be well.
**goes hunting around the house for stuff to convert** 😄
That's a very cost effective hack
Good job! If i wanted to hookup 20 fairy lights to the same power supply, would i need to add up the volts? What do you suggest?
Hi William - when you add more lights, do it in parallel. This will increase amperage, not voltage. You need to make sure each light is getting the correct voltage supply, and the light will draw as many amps as they need. Bang around on Google for parallel vs series wiring if you are unsure of what I mean. Good luck!
Great tutorial. I have a great small flashlight that has a focusing zoom lens. I’d like to convert the flashlight to a plug-in but not sure if that’s possible. It takes one AA battery. The body of the flashlight is metal so not so easy to take apart. Would like to use for shooting film and animation as the spot on it is so great. Any idea if this is even possible?
Hi Judgeworks - sure, it's possible... but likely will be pretty tricky. You'll probably need to just solder directly to the battery contact points in the body of the flashlight. Look for a 1.5V power supply.
Good luck!
There used to be adjustable power supplies. Now everything seems to be converging on 5V or 12 V. How would you easily step the voltage down for something that takes 2 cells?
There still are adjustable power supplies readily available, or you can just buy a very cheap power supply at the exact voltage you need, if you don't already have one. Thrift stores can be handy for this as I showed in the video, but they are also pretty cheap online:
Adjustable power supply: amzn.to/3rL0P6J
3v (2 cells) power supply: amzn.to/3Fbc37A
Hey buddy great video. Would a 5 volt adapter would be too much for a device calculated for 4.5? It is a LED lamp...Any comments?
5V would be just fine for that. Good luck!
i have a decorative statue that has a total of 5 little LED lights and runs on two AAA batteries... what ya reckon ac adapter i need..
Heya Android:55 - AAA batteries provide around 1.5v each, so with 2 you'll need a power supply that can put out 3 volts. Here is an Amazon affiliate link for one that would work well: amzn.to/3LZ28ni - though you may also be able to find one at your local thrift store, if you have the patience to do some digging. Good luck!
waw it is good!
Looking to convert a rechargeable microscope battery system to external battery backup system. Tight now when the unit stops charging, I don't know how to fix it. Any Ideas thanks. Other options, or opinions to help. Maybe converting to a wall outlet.
Without seeing more details on the microscope and the circuit, I can't really offer much advice. If you'd like to email me directly (maybe with some photos of what you've got set up now) I'll be glad to see if I can help: amplifydiy (at) gmail (dot) com. Best of luck!
Could you possibly connect to the battery terminals if the wiring isn't exposed? I have some battery operated candles that only let you get at the battery terminals. Amazon has these ready-made conversion kits, but at $15ea. per 3x AAA device, that can get expensive for what it's worth.
Yes, you can solder directly to the battery terminals if you can't get access to any other parts of the circuit. Good luck!
Can I replace my speakers 3.7V li-ion battery with a 5V power supply?
Can I take a power supply plug and make it battery power? Also, 12 v car battery options that are legit and not dangerous? A video on those two would be great. Thank you for sharing.
Good ideas, thanks squareglow!
What about multiple items? My wife has a dozen candles that all take 2 AAA at 3v. Can i wire all of them in series with a plug like you would with wall plugs on a circuit or will the require a parallel circuit?
Hi Tri - yes, you can wire them all in parallel (wiring in series would drop the voltage a little with each candle, in parallel, all candles run at the same voltage) - the only caveat is that you would need a power supply capable of a little higher amperage. However, bear in mind that each candle likely draws next to no current... I'll bet that a single candle runs for at least 24-48 hours before the batteries are depleted, right? Some quick back-of-the-napkin math:
1 AAA battery likely stores around 6-800 mAh of power. Let's be conservative and use 500 mAh as an estimate. For a single candle, you have 2 batteries, which combine for 1000 mAh of power. With this estimate, if the candles drew 1 full amp at 3V, the batteries would last right around an hour. But as I said above, I'm guessing they last for several days. Let's go with an estimate of 36 hours of runtime per candle with 2 fresh batteries. 1000 / 36 gives us an estimated current draw of around 27 milliamps (let's round up to 30, to make the math easier) per candle. If you have a dozen candles, running at 27 milliamps each, you'll need a power supply capable of 3V @ 360 milliamps. I'd err on the side of having a beefier supply, and get one capable of 500 milliamps or even 1 amp. Here's a 1 amp supply available on Amazon for less then the cost of a cheeseburger: amzn.to/3WRKLd9
TL; DR: I'm sure someone will come correct me if my math above is incorrect, but yes, you can wire them in parallel. Just get a strong enough power supply.
Good Luck!
Do you have to use a 110 adapter? Can I just take a junk extension cord and cut the male end off and connect the lights to the ext cord?
Hi Mike. Definitely DO NOT just connect an extension cord to a small string of lights that expects to run on a low-voltage DC circuit. If you have a thing that runs on a couple of small batteries, and you connect it directly to mains power, you'll let the magic smoke out of the thing for sure... and possibly risk starting an electrical fire. YES: You need an adapter. Good luck!
Hey, can someone help with the following question:
What if you had 2 of those light trees and you wanted to wire them in series so they use only 1 adapter? Do I keep the same voltage but look for bigger amp?
Also does length of wire affect the output and if yes, what should we look for?
Thanks!
Yes, stick with the same voltage, and grab an adapter with a little higher amperage rating. The length of the wire can affect how much voltage drop there is... but if it's just a few feet it should not matter. If you are planning to do more than, say, 15-20' though, then you really should just get a separate adapter and wire them separately. Assuming you are trying to convert a little 5V thing, you'll have too much voltage drop due to the internal resistance of the wires. If you are only adding less than 10' though, don't worry about it. Good luck!
I wanna do this with my hot wheels track launcher. It takes 4 D batteries. So I just need a 6 volt adaptor?
Hey Dale! A hot wheels track launcher would be a perfect match for something like this! Yes, a 6v adapter is what you are looking for. Something like this would likely be a good match: amzn.to/3vGSFe4
Good luck!
Is there a way to do it the otherway around? Convert wall plug to AA battery? I have a mini lamp id love to be battery powered.
Theorhetically, sure. Do you know the power requirements of the lamp? Do you have a battery enclosure you could repurpose for this project?
@AmplifyDIY yes im planning on using an old Cheap video Game battery enclosure, My Led Lamp is 5v1A
I have 3 outdoor sets of mini string lights that go around my deck, each string runs on (2)AA batteries. Would I need to make three seperate 3V adapters or could I wire all the sets together and then use one 9v power adapter?
Great question, David! Each string needs 3V, so you'd only need a 3V adapter even to run all 3. The voltage does not need to go up with the adapter, but the ability to supply amps will need to increase, as each string will pull a certain number of amps. I'm guessing that each string pulls less than 500 milliamps @ 3V, so if you had a power supply capable of at least 1500 milliamps (or 1.5 amps) then you'd be just fine. You should have no problem finding a power supply that can handle 2+ amps at 3V.
Good luck!
@@AmplifyDIY thank you much for your advice, and glad I found your great video!
I have a decorative tree that I turned into an art doll and I want to alter its power source this way. My question is, since it is now a year later has there been any negative effect on the LEDs on the tree from being plugged in for longer times? The tree in question is in the first one or two demo videos on my channel. Since the universe had you choose a decorative tree to convert to a plug I thought I should ask you first before attempting this.
Hi Linda! I'm glad you found this project useful. We've had this tree wired up this way for 2 holiday seasons now. It comes out sometime in November and stays plugged in and lit up all the way until the first week of January when we take our holiday decorations down. So far, no ill effects to the tree or individual lights at all.
However: LED's do have a lifespan... it's hard to predict how long yours will last, but it should be several years, at least.
Good luck!
Thank you. It will be plugged in from time to time, not constant. But it is good to know that yours, as you mentioned , was an older decoration and still has lasted through longer periods being plugged in multiple years. I will definitely keep in mind that it will later longer if not used like a night light. Lol Thanks again.
Do a clean washing machine tub specially a Samsung Washer tub
Great video. If I'm following this correctly, you were able to bypass the on/off switch? Correct? Will this work for a (3) AA battery operated toy light sabre? Thanks
Depending on the toy, you can probably bypass the switch, yes. Not sure I'd put this on a light saber that will be swung around a room... having a wire dangling from something like that does not seem like the best idea to me. But good luck!
@@AmplifyDIY oh no. Its going on a Halloween prop
Thanks
This is VERY helpful. Quick question: is there an "ideal" range for the adapter voltage to be within for the battery total? For example: 3 AA's = 3 x 1.5 = 4.5 volts. Should you only use an adapter that is 4.5 - 4.8 volts? Or could you push it up to 5.6 volts? etc? You get what I mean. Oh and also how about the amps? How much does that matter? Thanks!
I'd like to know also
Hi Chris - in general, with lower volt stuff, being within 1 volt or so of the intended target is fine. So, if you have a device that uses 3 * 1.5v batteries, using a 5v supply will be fine (It's 0.5v more than batteries provide, but won't hurt anything). As for amps: Remember that volts are supplied, amps are pulled. So the amps will be drawn by the load - i.e, the device you power will determine how many amps are drawn. Again with low volt stuff, most things pull only a very small amount of current - on the order of a few milliamps. As long as your power supply is has a higher amperage rating than your load will pull, you'll be fine. Thanks for watching!
@@AmplifyDIY so very helpful, thanks
Old heavy power supplies were unregulated and output a higher voltage with a very light load, settling around the rating with a nominal current draw. These are better used with radios because they don't create noise other than AC hum. A fully charged fresh cell is 1.6V, so it's already a bit over.
@@j7ndominica051are you referring to the power supply used on this video?
Outstanding, no more tossing wall warts out that we "think" we no longer have the device it would have powered, with the added benefit of reducing the amount of batteries needed at least yearly for the vast number of decorations we have that require power. Now, where did i put that multiple outlet adapter....... :)
I have a drawer full of wall warts that came from who knows where. When I need a DC voltage, I just dig through that drawer until I find something that will work. If I can't find it there, my local goodwill has an entire section full of them. Thanks for watching!
@@AmplifyDIY additionally, since the manufacturers are assuming 20/20 vision and good lighting, they make the specs in miniscule tiny fonts with minimal to no contrast. I whip out my silver and gold sharpies and put the voltage and amperage on every wall wart as soon as I unpack. Also a not to what it originally showed up for attachment. Also, I make the same notations on the device itself. Amazing how difficult it is to see black text on black background. :)
@@jim7smith What an awesome tip, Jim! I'll be using the silver/gold sharpie trick from now on. (lately I have to just pull out my cell phone and use the camera's magnifier trick to read some of these things).
What happens if I put positive with negative cable. Doest it damage my house electricity?
Hi Jose - we need to be careful to make sure we are talking about the same things: Your house should have circuit breakers that will detect if you accidentally touch the hot to either the neutral or ground of your house wiring, and flip off the circuit before any damage is done. But... I suspect you are actually talking about touching the low-volt negative and positive wires from your wall adapter, not the actual house wiring. Touching those together won't hurt the house wiring, but depending on the wall adapter you use may damage the adapter. Most have protection to avoid damage if you accidentally mix things up.