i need to step 90vac (ballasted) to 300v any help or if 9-18vac 2a is easier
Question by R.A.T.M | last reply
Hi, I am looking to power some led's by USB. Problem is that the led's are 12v. Here are some example led's: http://www.ebay.co.uk/itm/12V-SMD-1M-60-LED-STRIP-LIGHT-RED-HOME-AQUARIUM-CAR-/290571186666?pt=UK_HomeGarden_Lighting_Lamps_Lighting_SM&hash;=item43a76471ea#ht_3932wt_1396 Would something like this do what i want it to do?:http://www.suntekstore.co.uk/goods.php?id=14002311&utm;_source=gbuk Also looking at the step up booster i have no idea where i would solder/connect wires to the device? Any help would be appreciated. ItzMar
Topic by ItzMar | last reply
I ripped apart one of those nice flashlight / black light things. You know, those florescent 6 inch black lights. Well, I was amazed to see it runs off 6V. Until i saw the transformer.Problem:I have NO idea how many volts. My 500V multimeter said O.L (overload) so way over 500VI'm not sure the connections after i .. Ripped it off. If i quickly rapid turn on the switch, it reads many voltage range off a 1.5V battery, but then goes to 0. Maybe hooked wrong?--My GUESSING hookup (4-Pin transformer Square metal frame, and coils in middle)Below!--The flashlight[url]http://www.selfdefenseproducts.com/spy_shop/images/bl2.jpg[/url]Any idea? :(
Topic by Killa-X | last reply
I've got to a certain point on my instructable (I've come back after a day) and when I typed up another paragraph and saved it, the text had disappeared? And no matter how much I typed it up and saved it again and again (my instructable is now published) the text doesn't seem to appear. Anyone else got this? My instructable is also a competition entry which is a problem!
Topic by FloFreek | last reply
I need a step up transformer to go from my average bench power supply (5v dc) to 18v dc (the same I would get from 2 9v batteries). I have an associates in electronics but it's from 10 years ago and I can't make the information come back into my brain. Any help would be appreciated.
Question by Random Point | last reply
Now, for WHATEVER reason, step one shows up in EVERY STEP YOU CLICK ON!!!!!!!!!!! Now that is the most useless and pointless thing I have ever seen on this site. I mean, WHY???? If you need to see step one again, just click on it!!!!! The step one thing gets in the way, and it is really distracting!
Topic by eulaliaaaa! | last reply
Is there any such thing as a device that will step up 5v from usb and convert it to something else like 12v? I say this because I have a solar usb charger that charges a 2600 mah battery and outputs 5 v at 800mah to usb. i wanted to step it up so it could be used for other things.
Question by XBLmonster | last reply
I need to convert 7.4v to 10.2v. I have a Li-ion battery pack that outputs 3700 mAh, and a (revision c) gamecube that requires a minimum of 10.2v to function. I would like to power the gamecube using this battery pack, and avoid having to buy more cells and a new protection circut. Can anyone help me make this step-up converter? (Preferably using a TI converter). Thanks!
Question by ryguy425425 | last reply
I have a 6v power supply from 4 D cells that I need to convert into 24v in order to drive a solenoid. Can somebody direct me to a switching regulator circuit that I could build? Alternatively, if someone knows of a semiconductor that I could obtain that would do this, that would be great. However, I have looked around quite a bit and have not found anything. Again, my request is for a 6Vin to 24Vout switching regulator circuit, with about 500mA - 1A output... Thanks!
Question by raykholo | last reply
I have a permanent magnet motor which i found in my store (old gemini gate motor) i have built a small wind turbine that works well, so here is my question, i need to make this turbine generate enough power, to power my hot water electric geyser. i hope there is somebody that can help me i am really novice to this, i have read about inverters etc (even bought a book - electronics for dummies - great book i might add) to help me but i am not coming right ! i really hope someone can help me
Question by nicobotha12345 | last reply
I want to know, I am just curious where a combined transformer would be used.
Question by nerd7473 | last reply
Even if I have to open it up can I run this on 5v using a buck converter or by modding the screen? The screen is a RCA DRC69702 that came with a dvd player and all I want to is power it freom a two port battery. one port will be hooked up to the monitor and one to the raspberry pi.
Question by nerd7473 | last reply
Hello! I was wondering how to use a transformer to step-up volage. I got one of those shocker fly swatters and took it apart, and saw that it used a couple of transistors, capacitors, and the main thing, the small 5-pin transformer. How does it work? How can I increase the voltage?
Topic by HavocRC | last reply
I am working on my first project that applies arduino to the real world and needed to know how to supply more current than the arduino can output to several components. There will be 4-6 of these components, each one needing 5V at 0.6 Amps. I need to know whether or not I should use a step up regulator or a transistor or other component to power the device. I will have an external power supply, most likely 1 or 2 lipo batteries to power the whole thing too.
Question by Garebear350 | last reply
I bought some RC Lipo battery packs to power a speaker system but since then i've moved and my new landlords have thrown a fit about me charging them on the premises because of the (small) potential fire risk so one possibility im considering is using a powerbank or 2 instead as they have no problem with those. my problem is that the amplifier requires 30V but most slim powerbanks put out a maximum of 12V so could i either safely step up to 30V from 12V or join 2 powerbanks to step up from 24V?
Question by ambientvoid | last reply
When I was editing a several-step long Instructable, I would click away from the first step to the next step, and all of the text description would be copied over (and the original was lost). It happened 3 or 4 times today.
Topic by LifegraphLabs | last reply
I need some help. I am trying to design a self contained non electrical hydroponic system & part of it will have a water wheel that is supposed to lift more water up to a collection bucket up top to start all over again. But the issue that I am having is that I have no idea how to design gears for 3D printing & I also am no expert in planetary gear workings. So I am looking for some help.
Topic by sofiadragon1979 | last reply
So I'm working at a TV repair shop but really we fix and work on almost anything electronic. In this situation we have a NEUROSIGN 100 which is used to tell the surgeon when he's near the nerve, but he needs the voltage spike to be recorded on paper when he touches the nerve. The problem is that the machine only gives out around 30uV-300uV as he is working and the electronic ghraph we have only startes recording at 1mV. We need a way to step up that voltage coming out the machine so that ghraph will record it. We tried a small audio amplifier but that didn't work at all so we're back to the drawing board.
Question by Jimmy Proton | last reply
So the reason i became a member of ibles was to get allsteps, only after signing up did i discover the amazing community we have here !I visited the site fairly frequently before signing up and i just clicked through the steps which was highly frustrating.Have i got this right ?No membership = NO allstepsfree membership = allsteps if you click the box on the instructablePro membership = Allways allstepsif that is right then speaking from experience, i have to disagree, i think the free-membership level should get allsteps preference, that way they can become a member, easily view the whole instructable and then when they realize how utterly awesome instructables is they can sign up for pro.If i had arrived at ibles today and signed up for a free account because i liked it, i would have seen the pro option and thought "ill see what they have to offer first" and then when i tried to look at an instructable i had to continually click allsteps or even worse click through all the steps, i fear i may have lost instructables in the depths of my bookmarks folder.Now i love instructable's i have many friends and lots of fun, and i totally agree with the pro accounts. I just worry that without allsteps preference, the free-members will be dissuaded to stick around and eventually sign up to pro..p.s. im not great at writing long things so just try to get the gist of what im saying :)p.p.s. pic unrelated..
Topic by =SMART= | last reply
The ''view all step'' on the bottom of each instructables doesn't work for me anymore, I need to click the one on the top of the page, but several time before it works…and sometimes it doesn't works soon so I just give up to see the complete instructable… It is just my computer or it happen to everybody?
Topic by marcellahella | last reply
I'm working on updating some of my instructables, (https://www.instructables.com/id/Solar-Cockroach-20/) (https://www.instructables.com/id/Solar-USB-Charger-20-21/) and one of the things I'm doing is removing some of the steps. In Chrome, in the editor I click the X to delete a step, and confirm that I am sure, and it pulls up a "Confirm Navigation" dialogue from Chrome which says "You have pending form responses. These form responses will not be saved if you leave this page. Are you sure you want to leave this page?" and I can click stay or leave. If I stay it will pull up a dialogue from Instructables saying "We hit an unexpected Problem. If this problem persists, please contact us about what happened." So here we are. The same thing happens in Safari, but the first dialogue is "From 'docs.google.com" instead of "Confirm Navigation" I sent a message to email@example.com a month ago and have heard nothing back. Does anyone know what's going on?
Topic by BrownDogGadgets | last reply
I have a GB Instruments dmm i got at a Hamfest (Ham Radio Fest) in Peoria, IL a few years back for like $6. It's great, and its more accurate than my father's Craftsman from Sears that he paid $40 for about a year ago. I have replaced the 9 volt battery twice in it. 9 volt batteries are horrible for capacity, and I use this DMM so much it's almost a high drain on the 9v. I know that a standard 9v holds 500-700mAh. I have a whole box of old AAA batteries that have about 1.4+ volts still in them from a stupid car toy that drained an AAA .1v-.2v and called it dead. A standard AAA alkaline battery (E92 or equivalent) holds 1,200 mAh or 1.2Ah@1.5v. 4 alkaline AAA batteries holds 4,800 mAh@6v. I can fit 4 AAA batteries in the 9 volt holder in my DMM snugly with a piece of foam for anti-rattle. That's only 6 volts. The DMM will power on very dimly at 6v, so is there any circuit to make up for the lost 3 volts without adding a bulky power pack? There is a LOT of room in the DMM for mods n stuff. Thanks for any help Is there any way to step up
Question by lilpepsikraker | last reply
The estimated max my (DIY) panel would have put out was 5.0V, but It's 5.65 in the brightest sun nearly exactly 90° So I wonder is 5.65 outside the input limit for a typical "_ to 5V" step up usb connection? I have learned that if I had a really wide voltage that I would a boost-buck converter to step it up or down depending on the input. I just don't know if I need that here. What happens if you over-volt a step up?
Question by Phoenix17
Hello, I need a 12V 0.2A(min) power supply for a project... I don't want to use any kind of strange or expensive battery because it's a gift for someone. I was planning on using a 9 volt battery, is there any easy way to build maybe a step-up transformer for it (needs to be very compact)? Or could I use AA batteries? I don't want to use 8 AAs though, I do know that's be 12 volts... Thanks, any help is appreciated.
Question by j.hawkins | last reply
503c org need to be chartered. board of directors location? sponsors? anyone ever tried to hold a large event? not as the boss but have been on boards for things like this.2000 to 8000 people show up,worst than not enough interest is too much ,ever ordered 200 portable pottys?what if food venders back out at last min? or the bands get into fights? sounds like fun ,need some help?
Topic by bikerbob2005 | last reply
I want to Build a flashlight as small and bright as possible but it doesn't need to last long. I allready got a case i want to use, it has enough space to fit 2 rechargeable AA's and 2 1000mA LED'S + cooling thingy. But to build it I need at least 7-8 Volts (12 woud be better). I only need it for like 10 Minutes between recharging so I don't really care about efficiency. Every schematic and formula will be helpful :) Oh and it would be nice if it's cheap ^^ Thanks from Germany :)
Question by Yakumo | last reply
When I go to continue my step-by-step instructable, instructables has this gray rectangle that says: "Updating...", and I can see the things that I did popping up, but everything is there (I think...?), and the little rectangle is not going away... What's going on here???
Question by soldeir 9 | last reply
I just spent 4 hours writing up a really kick butt guide using the new editor. I went to publish. Published it. I had something like 15 steps written out, and then I had three. Just three. The rest were gone. No idea why or how. What happened is that I started writing in the "old" editor, but stopped three steps in before switching to the new editor. Seems as if the system didn't like that. Oh well. Looks like I wasted four hours of my time.
Topic by BrownDogGadgets | last reply
Topic by Incrxtc | last reply
Question by HammadA | last reply
I recently made a very small wind turbine using a dc motor. it generated a .2 volt current and i want to sted it up
Question by Coolboyme | last reply
Hey fellas..I am having problems with joule thieves especially with the toroid part.... First time I wound my Ferrite Core and the joule thief ran smoothly... But recently I had to unwind it to try other wires which didn't work.. So i again wound up the toroid just like the first time when it used to work but unfortunately this time it didn't work... I have checked everything and found that the only problem is that the toroid is not helping to step up the voltage.. When i applied 9V across it, the LED glowed but for 1.5V it didn't. So there is a problem with the toroid.. But what it is and why is it happening I don't know..I mean for the same core and same style of winding once it worked and now it doesn't, Why ?? Can anyone help me ??
Question by Arijit Chatterjee | last reply
Planning to build a guitar amp that runs off a battery, need to get 22v to the plate. can i build it to wire straight into the circuit? also where can i find a miniature output transformer that can mix voltages and be suitable for audio use. i want to build a 0.2w tube amp running at 8ohms off 12v and low amps.
Question by iNeedGuitarAmp | last reply
I've been using the mc34063 in boost converter manner to build an external battery circuit for 3.7v->5v DC-DC conversion, but within few minutes of operation the chip and the inductor begin to overheat beyond touchable (light smell of burning components too), occurring with both circuits that I had. I've tested using the following devices: ipod touch 2G, ipod touch 5G, kross g6 tablet, all of which had the circuit overheat. The power source is 4 cylindrical cells in parallel @ 3.8v ~9A with protection circuit. The batteries do not overheat and I'm guessing the protection circuit regulates the current to an extent. I've tested the current draw of the ipod 5G to 100mA while the circuit is wired for 500mA. This is what the schematic looks like: http://www.eeworld.com.cn/uploadfile/dygl//201210/20121025102243965.png I would like some help in troubleshooting the overheating of the circuit, Thank you.
Question by Ahyku | last reply
Hello everyone.I've had an instructable that has been up for a long time with electrical drawings detailing a wiring modification. I get comments from time to time asking for better images of the drawings and I end up emailing them to the person. I tried to upload the images again and they still have reduced resolution when I look at them in the instructable. Is there a way to ensure the images are not compressed when added to the -ible?BTW, the originals are about 400kb - 500kb.Thank you!
Question by mofoya | last reply
Hi Everytime I try to add a step in my instructable, the new step shows up, but it is not empty. It shows the same data that is in my introduction. If I add several steps, the same things happens. if I try to delete any information from any of these steps, all of the steps show the same change....
Topic by EngineeringShock | last reply
I just saw this video via Laughing Squid's Twitter feed. It's a small robot from Boston Dynamics (the people that brought you the Mule walking pack-robot) that can jump 30 feet straight up. Now, imagine if they combined that leaping technology, and the ruggedness to survive the landings, with the terrain-crossing a flight capabilities of a Mini-Wheg MMALV, and you've got a robot that can get anywhere - as soon as the terrain gets too rough to clamber over, jump 30 feet straight up, and then either glide or fly under power to a better location! Come on, roboteers, get to it!
Topic by Kiteman | last reply
Hello ladies and gentlemen. Im looking into buying a laptop powerbank charger for my Lenovo X1 carbon that charges at 20v 4.5A 90w fast charge with upto 80% charge in 1hr. But it will also charge at 65w and maybe 45w I've read. But this will not give me the full power of the processors and gpu etc. Unless I charge at 90w 4.53A there are are some powerbank that are around £100-170 for sale but these don't give full 4.5A. Mainly around 2-3.5A so will maybe or maybe not charge she give me full power of the laptop so I'm thinking about making me own using 18650 batteries. Good Samsung or LG 2500maH plus cells. Prob around 3000mah. Im thinking I could either use a buck down or step up and use the batteries on series from 3S to 8S and then 3-4P to give me around 10000mah. I'm looking for the best efficient output so I'm not sure whether to use higher input or lower input to give me 20v. Or or maybe I could go the inveter route using a 12-24v 150w inverter?? Efficiency is the main thing here. What is the best option do you think. Should I use 12v or 24v for max effecient conversion. Ive searched the instructables for such devices but cannot seem to find anything like this. Or would I be better to buy one??? I would want to add USB and USB c also. Defo USB 2.0. Could you you please help me choose and find the answers please? I fancy the DIY route because I'm looking into solar and battery power storage and also boost my range wifi range through either ptp or directional attenna. These projects will come after the laptop powerbank. Any my help would be appreciated a lot. Kind regards. Scott.
Topic by ScottL190 | last reply
I have posted a new instructable, but when I went into edit mode, to add a new step, there is no provision for doing so: Here's my instructable: https://www.instructables.com/id/How-to-Quickly-Field-Estimate-the-Weight-of-a-Stan/ I tried using Internet Explorer 8, Opera 12, and Mozilla Firefox 23, but to no avail. This is the first time this has ever happened with one of my instructables. And please, don't hesitate to be verbose with your answer, as others on this forum have posted the same problem, and the posted answers are not helpful at all. For example, others have answered "... click the add step button..." when the post indicated there was no add step button, or "... maybe the instructable was not set up as a step-by-step instructable" and simply left the problem still hanging there. Hey guys, these are not complete, problem resolving answers. And problem repetition (with lack of suitable answers) does clutter up our help section. Any help will be greatly appreciated. Thanks, shastalore
Topic by shastalore | last reply
For instance. Say I have a square wave of 9 volts created by a 555 timer at the frequency 1 kilohertz, and that is the input into a transformer designed to step up the voltage to 120 volts. Will the frequency be changed in anyway? Are there any changes besides voltage?
Question by Dirtie Hippie | last reply
I have a dell computer that I wiped of the Windows OS and installed Xubuntu 8.10, I am trying to intsall Ubunto. I need help installing it. I can not access the internet at the moment on that computer. I did go through the whole process of downloading the system last night before the internet went out on it. I did not get it loaded. It is just downloaded to the desktop. I also have a copy of it on my laptop to put on a disc. I put it on a DVD disc. Once I put that into the computer I did not know where to go from there. IF you can help me figure out the steps I would greatly appreciate it. I do not have a manual or any instructions. I am very new to Linux and firefox. Thank you for your help Mrs. Skunkbait
Question by Mrs. Skunkbait | last reply
If any1 does send me the link
Topic by knex gun maker | last reply
I have two 6V solar panels connected in series that are generating electricity which I plan to use to make hydrogen but I'm wondering if I can somehow use a transformer to increase the amount of voltage being supplied. I know a disposable camera does something similar and I have taken apart several of them before (to make sparks for potato cannons) but is there a way I can incorporate that into my own DC circuit?
Question by Ke-Bob | last reply
I have the ethernet cable hooked to my pc, and went to my networks and did the wizard just like instructables said to do but it keeps telling me something is wrong with my IP address. It says my IP address must belong to two or more other devices. I don't know what to do. Thanks for any help.
Question by septsher | last reply
Pictures used to display intermixed with the text of an instructable. Now all I see are the little 'icon' type pix for each step that are at the top of the instructable. The little pix are not enough to see the detail of what is being done in the instructable. How can I get the old display style back?
Topic by servant74 | last reply
OK, so it's a fairly simple task for homo artifex, but a robot is now capable of folding towels. It takes two minutes of sped-up video to fold the five towels (100 minutes in real time!!), but this is a huge breakthrough in robotics, because towels are not rigid, predictable objects. The towels are different sizes, different colours, and start off screwed up. You may be bored, but I'm impressed. Berkley Website article Still image from dot.Maggie
Topic by Kiteman | last reply
I have a xp system and a vista system and i was wondering how to set up the wires and how to change the setting on each computer if need be..im very new at this and do not know where to begin..step by step instructions will be best for me to understand as i am very new at networking, thabk you
Question by slimjmb22 | last reply