240V DeWalt charger on 110V UK building site voltage doubler rectifier adaptor
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- Опубліковано 26 сер 2024
- In the UK we have 110V on building sites for safety. this poses a problem if you wanted to use a 240-volt battery drill charger. Just making a straight adaptor doesn't always work. My DeWalt charger will not operate on 110v. I will show you how to make a simple voltage doubler circuit, that allows you to use 240v battery chargers on 110v. If you have different tools from different manufacturers it doesn't make sense to buy a 110 volt chargers for all of them😉👍
#electronicscreatos
Thanks for this. As I have 3 Festool 240v chargers already, I am going to see if I can build the circuitry right inside the charger.
Just test if it works on your festool charger before you go "all in". You may have to increase the cap size for your specific needs. I have not tested with the festool brand of charges yet.
Awesome video it’s a great solution it’s just some of the sites won’t allow it I am afraid
I guess you can always get the 110v charger then.
awesome video man, you answered all my questions lol
Please remember to only use this voltage doubler on chargers that don't mind DC to power them. So nothing with a traditional heavy transformer. Most cordless tool chargers use switch mode power supplies these days, and they can handle DC with out any problems.
I think only flyback topology supplies can work on 100-250. This topology is usually limited to
I didn't check if it was flyback, but if you use a voltage doubler rectifier it should work on on most SMPS.
Pretty much all laptop power supplies are universal voltage and those go up to 300W. For that matter, full size computer power supplies are as well, and those easily do 2 kW. It’s basically just that universal supplies aren’t quite as cheap.
No surprise. Many electrical devices have been dual voltage and dual frequency for quite a while.
It should work on 110v and 230v like most modern appliances. But in this case they want you to buy the 110-volt version. It simply won't work on 110v. That's why I came up with the voltage doubler adaptor.
I was looking for a way to make my bench grinder run at half speed. Would it run on a transformer?
Hi I was wondering if you could help, I would like to convert my Makita DC10WA from 230v 50hz (normal UK England supply) into 110v so I can use it at work on the building sites. I'm an electrician by trade, just a bit uncertain when it comes to electronics. Hopefully you can help,
Many thanks
Andy
Have you tried powering it directly on 110Vac. Some chargers will work on different voltages( 80v to 250v). If it doesn't work then you could try my voltage doubler circuit, from this video. I have not tried on your charger yet, but it should work. You might have to increase the capacitor values a bit, if it's getting a bit of volt drop. Remember the output voltage of my circuit is a doubled and rectified DC voltage. It's the same voltage that you get on the capacitors inside your charger. About 325VDC. This is the normal internal DC operating voltage.
Hi, I really liked your video, you are great. Can I put two capacitors of 200v 1500 uf or one 450v 10-30 uf?
The circuit is called a voltage doubler rectifier and it needs 2 capacitors to function. The 200v capacitors should work for a 120Vac input ( higher voltage capacitors would be better for extra safety). 200v 1500uf are very big capacitors but should be ok , you will have a big initial inrush current as the caps first charge up.
Just plug the charger into the 240v supply that the site transformer is plugged into
Alot of site transformers aren't plugged in, they're hardwired on an armoured cable into a distribution board. You generally won't find 230v sockets anywhere On a uk site other than in the site office
@@grahamnew5068 haha just splice onto the armoured and put a socket
Can a 110v compressor be changed to 240 buy adding a plug
No it won't be possible using my method. This circuit was designed for tool charging.
The site transformers have a 240v plug on the other end as it steps the voltage down from 240 to 110v so just plug the charger into the same 240v supply that the site transformer plugs into
If you can get the the other end then yes
Hello nice video, I have festool M class 240v.
Will this adapter work? If yes can I buy please 🙏
I haven't tested with it with a festool charger, but I see no reason why it shouldn't work. The component values might have to be tweaked ( bigger capacitors). Unfortunately I just don't have the means and the time to build these things at the moment. Maybe in the future I might start building and selling my projects.
Can i put them right inside the charger?
Is guess it can be done, if there is enough room inside for the capacitors and rectifier bridge.
@@MyProjectBoxChannel can you please tell what capacitors and rectifier bridge have you used? My charger it's a bosch and have a loot of room inside.
@@bogdanulici1857 have you tried powering it from 110V? Sometimes it can work on both 110V and 230v, if you are lucky.
@@MyProjectBoxChannel no I haven't tried, im afraid it my blow up or something to be honest. Ive seen online people switching bigger capacitors on the US charger (110v) to work on 220v. I was wondering if its not working the other way around on the 220 one, swapping the bigger capacitors to lower ones.
@@bogdanulici1857 using a 230v charger on 110v, the lower voltage won't harm it(but it might not function). But running a 110V appliance on 230v could be bad. A lot of devices will work on both though.
will 200v caps work?
200v caps should be ok for 110v AC input. I would prefer to use 400v caps for extra safety and robustness ( just in case you accidentally put 230v on the input)
I Tried this method with a 240v Makita DC18rc charger… it didn’t work….it reacts with alternating green red blinking lights to indicate battery fault. Can the makita charger sense the dc feed voltage? Or is and circuit in the battery sending the fault?
I'm not sure. I have not tried on that type of charger. Maybe the capacitors need to be a bigger value. You could be getting a voltage drop with the battery charging. On your DC side you should be getting around 300v DC even under load. Also this won't work with older transformer (Heavy) based chargers.
Makita they selling 110v charger
You should sell these!
Maybe I should sell them 👍, but I just don't have the time to build them.
So, for safety, building sites want you to use a power supply that has nothing higher than 55 vac, with the 110v centertapped, on extra robust CEE plugs. And then you turn it into 340VDC on a regular plug.
If you bring this into a building site you should probably be thrown off the site.
I get your point. But what do you think of the "rectified DC voltage" inside a "110v site type" dewalt charger is? Answer, it's the same! Over 300 volts DC on the filter caps! Just a bit of moisture on your plastic casing of the charger, and then voltage is exposed to your hand. The charger has little slots for cooling, so it's not sealed in any way.
@@MyProjectBoxChannel you said the exact word that is the difference: “inside”. No, you’re not going to track a measly few hundred volts just because of “moisture”.
Also, a SMPS that is running on 110V and does not have a physical 110/220 switch will never have 340 volt inside, it’ll be 170.
@@JasperJanssen I guess you're right. Simple "multi-voltage" flyback topology SMPS, simply rectify and smooth the mains voltage. Some very old fashioned type computer power supplies had a switch that engaged the voltage doubler. I've also seen this voltage doubler being engaged electronically. Sometimes they double the voltage for power factor. So that the sine wave can be loaded evenly. And there are various different ways of doing clever active power factor correction. The UK's 110 volt center tapped to earth seems to be unique in the United Kingdom on building sites. But you would think with good RCD protection this is kind of redundant. Modern residual current devices operate incredibly quick, and the risk of electrocution is almost zero. I do admire the UK's belts and braces approach(55v 0 55v). I just think it's way over the top.
@@MyProjectBoxChannel I kind of agree that the UK is a little OTT on all of that. Re:RCD, I’m not sure that temporary building site supplies are always equipped with (let alone working) RCDs.
And let’s be fair, the type of usage that is charging batteries is not exactly high-risk. But if you’re gonna do this I really do think you should put it inside the charger’s case and replace the cord with a thicker one with a yellow cee plug, rather than making it an adapter. Particularly given that that socket is not designed for a high-ish DC voltage, and people are bound to plug other shit in it no matter how well you label it.
Do you have one available?
I have the one from the video it was promised to a friend of mine. I could always build another one for him. You have to let me know if you interested is £50 okay?
@@MyProjectBoxChannel is that posted? I am in London.
And I can use it with any charger, right. I am on makita/festool platform.
@@cabobila it should work theoretically with any modern charger (not the old-fashioned heavy transformer type) I've not tested on Makita or festool, but Milwaukee drill charger worked fine. I don't see any problems.
@@cabobila so I'm in London as well, but it's postage charge extra ( royal mail.)
Could I pay you to make me five of these if that's okay? Thsnks
I'm not currently making these for anyone. I might build a couple of these in the future, If there is enough demand. However I don't want to be liable for anyone's equipment getting damaged. My work will not be able to be electrically certified, in any way. People can build this circuit at their own risk. The thing works great, and nothing bad should happen, but you could void the warranty of your device.
@@MyProjectBoxChannel I don't think I'm too worried about avoiding the warranty on my 1990s lights 😂 No worries. I thought I'd ask. Seems like a really great bit of kit you've made
@@cdpointless6819 no worries 👍. By the way what were you planning on using it for. It's kind of designed for cordless tool chargers, or other small "switch mode power supplys" only 🤔. It won't work on the older style "transformer type" power supplys(heavier)
For less than 50 you can get a fast charger from America that is 110v .just swop the plug . this is a waste of money
You're right you could just get the US version. But If you handy with a soldering iron, the whole thing cost me just £3 to build. it's also universal. So if you have multiple different tool brands chargers, it's a handy thing to have in your toolbox. As a bonus you can build them in less than 20-minutes, and you don't have to wait for the shipping time from USA.
If I had more than one type of charger I would probably do like you did
@@MyProjectBoxChannel Could you run a chop saw off of it?
@@sycbeck652 unfortunately it won't work 😥 it can't supply enough current for your chop saw. You would need much beefier capacitors and rectifier diodes. in theory it would be possible, but I would need to know the exact specification of your chop saw.
But they working only on 60hz I don't know will work
You shouldn’t run AC things on DC!!
I have done that many times😉 DC is making a big comeback ua-cam.com/video/Au3wURws_Bg/v-deo.html
You can run switch mode power supplys directly on DC. But you can't put DC on the older transformer type power supplys, it simply won't work. Most LED light bulbs are OK on DC. CFL bulbs are fine aswell. Induction motors don't work on DC, but brushed motors (universal) are normally OK.
🐝💤💥💫👍
Please make me one,
I just don't have the spare time at the moment😮💨. And I'm currently not based in the UK.
@@MyProjectBoxChannel ok,
Thanks anyway.
@@PeakyBlinder If enough people show interest I may build a couple
Nice work, I have one question tho..
I thought yellow 110v were Two phase 55v A/C?
So what you did first wasn’t enough power @ 55v (one phase of the two)
and what you did next got you 110v output not 300ish?
Did you measure the output voltage?
Just trying to get my head around it.
Thanks for the great video.