How can I convert HD AVI movies to Full Screen 16x9 . We are running Ubuntu 10
Question by emit 8 years ago | last reply 4 years ago
I make the rwilsford07 boost converter, but it doesnt work. The mosfet start heating and only gives 2v. I check the oscilator and is working perfectly, I try diferent things butit doesnt work. Before I make 120v, but I dont know how it stop working, I nad rebuild the circuit like three times but nothing happens. Can you help know why is this happen?
Question by Kurt Gerhard 7 years ago | last reply 7 years ago
I am making the rwilsfor07 boost converter, I already have the timer but the mosfet isn't working; I think that didn't work but I am not sure. Should I buy another one or buy a IGBT: http://www.ebay.com/itm/IGBT-Power-transistor-FGL60N100-1000V-60A-180W-TO264-/170643487614?pt=LH_DefaultDomain_0&hash;=item27bb24fb7e#ht_2150wt_758
Question by Kurt Gerhard 7 years ago | last reply 6 years ago
I need to convert a bird sound from the audible level to the ultrasonic, close to the the 20khz level. as long as we human cant hear the sound. My question is, what is the best method to convert this file? thanks in advance
Topic by bujuk 8 years ago | last reply 9 months ago
I recently purchased a normal set of white LED christmas lights for my apartment. But recently I saw similar units that run on solar energy. I was wondering if there was a way to convert the sets that I have into either battery powered or solar powered.
Topic by mrshow555 11 years ago | last reply 11 years ago
I am trying to find a practical way to build a device to convert magnetic energy into electrical energy, some kind of generator or other device, there are several ways in which this might work in theory but actually building the device would be more difficult to figure out.
Question by thedriftcore 7 years ago | last reply 2 years ago
Hello, I want to connect a portable solar powered rechargeable to 2 DC fans of 12v to cool my car. 1. I have 2 options of portable solar powered: (A) 1500mAh, outputs: 5.5V / 800mA (B) 2000mAh, outputs: 5V 500mA which one is preffered to connect to those PC fans? 2. most of the PC fans are working at 12v. I don't quite sure if I'll build simple 5v to 12v regulator it will works and produce enough airflow. Thanks.
Topic by ashakif 7 years ago | last reply 5 months ago
Question by kfattoum 5 years ago | last reply 5 years ago
Anyone know how to convert an AC to DC without using the Neutral Cable. Just a Single Live wire. Is there a way to split the incomeing Live wire to positive and negative phase and convert to DC from there? ANyone have any ideas?
Topic by Paradigm812 9 years ago | last reply 9 years ago
I've been looking around and it seems like most catalytic converters have palladium in them. I think palladium is mostly inert but palladium salts are highly toxic. I would like to open up a catalytic converter and use the substrate to make a thermoacoustic engine stack. So do you know if it would be poisonous to me to open a catalytic converter? Thanks!
Question by snotty 7 years ago | last reply 7 years ago
Can I convert the coilgun into a railgun by replacing the firing tube with two rails? Should the current pass through the rails only for a moment (as in the coilgun)? Which can accelerate a projectile to a higher velocity?
Question by coilgunfreak 5 years ago | last reply 5 years ago
I have an old TV that I want to convert so that it's able to be used as a monitor for my camcorder. The TV however only has an antennae and screws on the back for a circular UHF antenna. It's an old RCA Model EJR 291S black and white tv. If anyone has any ideas let me know.
Topic by mrshow555 11 years ago | last reply 11 years ago
Hi ppl, for electronics A level coursework i am hoping to build a DC to Dc converter to use to power high power leds. As far as i understand it will convert DC to AC, use PWM to alter the current out, and then convert this back to DC giving a constant current out. These are available in devices (known as buckpucks) but for my coursework i hope to build a similar thing on Breadboard. This is really a question for the engineers and if they could give me some advice on anything to do with this it would be great! Thanks ppl
Topic by drummer ian 11 years ago | last reply 8 years ago
Anyone have info on converting a bike to a trike? My disabled son has balance issues but wants to ride with the family, however we can't afford a new adult tricycle or one of the expensive conversion kits. He's much too large for training wheels to work. I'm hoping to find a way to convert an old bike with minimal expense and no welding.
Topic by valr 11 years ago | last reply 2 years ago
I need a dc-dc boost converter that will step 25.9 volts at 2600 mah up to around 388v at 360 ma will I need a battery back with a greater amp output I can get up to 12000 mah at the same voltage any suggestions I am trying to charge a .1 farad cap bank that consists of only 10 caps Any help is appreciated -TDC
Topic by ThinkDesignConstruct 4 years ago | last reply 4 years ago
I am trying to convert an electric string of LED lights to 12 V battery power. (I am using them on my golf cart, which has a 12 V battery and would like to run the lights using a switch that is attached to the battery.). How do I do this? I have attached a photo of what I have.
Question by RobinL91 9 months ago | last reply 9 months ago
I came across a CATV CONVERTER Jerrold 550 model # DP7113 and when i tried to hook it up to my TV i got a blue screen . channel 4 was the only channel that was somewhat visible . if anyone can please give me some basic instructions i would appreciate it very much thank you
Question by rottieowner90 8 years ago | last reply 8 years ago
I have a single phase 3.5 hp AC motor, I would like to convert to a 12 volt DC.I'm no electrical expert but I think it can be done.From watching youtube vids and asking Mr. GoogleI understand a DC motor runs slower say 1750 rpm,where my AC motor spins at 3,450 rpm.I also understand a DC motor has brushes.Besides the speed being different, and changing the cord out,is there any reason WHY this couldn't be done?Any potential drawbacks?Any help or knowledgeable advice would be much appreciated.Thanks guys,skip
Question by xhdskip 1 year ago | last reply 1 year ago
Basically, I want to power a small AA device from a usb port, preferably terminating in something that will fit snugly into the two-AA receptacle. I searched the archives, but couldn't find an equivalent project. Any assistance would be appreciated. Thanks.
Topic by J0ub3rt 2 years ago | last reply 2 years ago
Hello, It Is Now Summer where I live, and it is getting VERY hot. I Want to put in an Air Conditioner, but whenever I do, My electric bill goes through the roof! I have an old car part (Cannot remember what it is called, its the part that uses the turning engine to charge the battery or something like that... I Cant remember) and I would like to use that (made into a mini wind turbine) to charge my spare car battery, and use a DC to AC Power Converter to power the air conditioner... I Have an DC - AC converter, but its not powerful enough... I Need To Build One That Can Power The Air conditioner.... Soon... Its Starting To Get REALLY hot... Thanks...
Question by Tuckoguy 4 years ago | last reply 4 years ago
Hello, One year later, I found that video on youtube about a japanese scientist who converted plastic back to oil : Source : http://ourworld.unu.edu/en/plastic-to-oil-fantastic/ I waited for a convenient version for home use but still the smallest system weight 50Kg (100 pounds I guess). For what I read on the subject it's a kind of catalytic pyrolysis (whatever it means for such a non scientist as myself...). As any of you have an idea on how to make this kind of system for everyday use?
Topic by hypelike 7 years ago | last reply 6 years ago
There's been a huge increase in spam in the past few days....mostly by dalacjack but some by others with permutations of the name.....it's all "how to convert" such and such....and they've all got links in the post that actually point to various mortgage sites etc....i've flagged them all...but i think the guy's account needs to be revoked
Topic by crapflinger 10 years ago | last reply 10 years ago
Hello guys of instructables! I'm writing on this forum, because I think you the only guys that can help me! My situation: I'm from Europe (Nordic part), and our voltage/hertz is 230v 50hz - I think. What I'm trying to do is using american clippers here in my country, but what I've experienced is that it really going to work because the magnetic motor in the hair clipper is going to make alot of noise and overheat, even tho if you used a stepdown converter (230v to 110v) My request: But yesterday i saw a guy on youtube which said that he had made a revolutionary stepdown converter, that would solve the problem and make american clippers anywhere in Europe - without overheating and noise. Here is the video: http://youtu.be/I2Ybj1BKjYk?list=UUpnyPxtX9XwOJZbN8qwVoLg And here is a ebay link of the converter: http://www.ebay.ie/itm/181496829039 I think its a bit of a overprice (119.3575$) and I was wondering if there is an alternative, where can either make it myself or buy one as good as that one with same specs and quality.. I hope you guys can help me, I'm a bit of unexperienced guy when it comes to electronics so bare with me.. - josh
Question by joshua1993 4 years ago
So what do those of us with old surround sound receivers with no HDMI inputs that we either don't want to part with because in every other way they are just awesome pieces of equipment or we simply can't afford to replace them do? It seems that no one sells an affordable, quality HDMI to RCA converter that can easily go between modern components like Blu-ray players and older receivers. So what can we pirate one from and what would be the best way to do it? Ideally it would split out all the surround channels or convert to a single digital RCA cable. I'm more concerned about sound, because TVs wear out and get replaced faster than receivers, so odds are we have an HDMI ready TV. I don't object to video as part of the project, it just isn't necessary (for me).
Topic by mid_life_crisis 3 years ago | last reply 3 years ago
How does a Floppy Disk Converter work? Heres my problem. I have recently bought a laptop which has Windows Vista. I have an old desktop computer with Windows 98SE. I have no floppy disk drive on the laptop. I want to save the material on the floppy disks onto a USB memory stick. I bought a USB that works for Windows 98SE only to find that you need to download drivers for it from the Internet before it will work. So I plugged my Broadband connection (which is from Vodafone) into the desktop computer to get an Internet connection only to find that the Internet is too new a version for Windows 98SE to read so therefore I cant download the drivers. Also I thought I could save to CD and then put the CD into the laptop to save them to the hard disk but the desktop only has a CD-ROM whereas the laptop has CD-RW. So that wont work either. So I was wondering if a Floppy Disk Converter would be the answer to my problem. Like do you just insert a floppy and a USB into the Floppy Disk Converter and transfer the files. Do you need to connect it to a computer. Sorry for rambling on but I have so many questions about it and I really want to know before I go out and buy one only to find that it is also useless to me. Thanks
Hi everybody ! I'm currently working on a speaker project, and I want it to be powered by 4x 18650 3400mAh 3.7V batteries in parallel, but when they are recharged (with a separated 18650 wall charger), I want to be able to power my speaker from a wall power supply. The idea is to get the 5v power supply voltage down to something between 3.7v and 4.2v, in order to mimic the battery voltage. I already chose this one which is a 10amp-capable power supply in order to be sure to always give the speaker enough current (speaker current consumption is between 0,55 at medium volume and 3 amps a maximum volume). I first thought that i would use this board to convert 5v to 3,7v but it's only able to output 1.25 amps max so I need to figure out a way to convert 5v to 3.7-4.2v without loosing a lot of current. I've heard of low dropout regulator (LDO) but I cannot find one capable of delivering 4amps or more... Any help is appreciated ! Mahot
Question by boulou 4 years ago | last reply 4 years ago
Ok this is my first post on this site so forgive me if i sound stupid...i like to tinker with things so just to tell a little about things i have done...completely rebuilt a pc..wired up an adapter for an old xbox to work on pc...the easier things....fixing frayed speaker wire....rebuilt/and upgraded a zune 30gb to zune 60gb the usual stuff...my most proud is overclocking my amd 64x2 4000+ to 2.9Ghz.....everyone said it couldnt be done...........anyways on to my question.......i want to know what all i will need to convert Dc to Ac power for a set of old desktop speakers i found in my closet.......i have an idea of what i want to be able to do.......put them in a backpack and make it portable.....currently i have two old 7.2v 1200mah Rc car batteries that i would like to use to power it.....and i also have a charger for them...it can charge and discharge...its old but works....so now my next step is what else am i going to need to complete this project...i dont know a whole lot about electricity but know enough to follow directions...if someone has already done this or knows how to and could walk me through what i need to do i would greatly appreciate it....
Topic by Celestial_Artisian 10 years ago | last reply 10 years ago
Help. I want to convert the baumatic bw18 drinks chiller into a refrigerator. The cooler runs between 10c-18c. I need to alter it to run at 0c - 5c. Is this possible? What parts can I modify? Do I purchase or modify the thermistor? I think it is more involved than resetting an appliance timer. I need to convert this model specifically. Here is the product link. http://www.baumatic.co.uk/products/catalogue/refrigeration/winecoolers/BW18Thanks.
Hello all, I'm new to the forum but I love the site and have been inspired by it for a while now. So, I'm working on a project to do GMRS radio communications between my wife and I between our motorcycles. The radio and headset part are pretty well taken care of but the radios don't natively accept vehicle power - only batteries. This is a bit of a bummer if you're on the road for a couple of days or more so I want to tie them into the existing 12 volt power on the bike. The radios have no plug for this but I'm assuming if I can knock the bike power down to the 6 volts normally delivered by the 4-AA batteries, I should be able to tie that in to the terminals in the radio that normally take the battery power. So, what is my best option? Hack a cellphone charger? Build from scratch? Size is a factor as it will be stored in the tiny glovebox in the tail of the bike. Any thoughts or links to appropriate stuff would be helpful! Thanks very much. -Ryan
Topic by compassrose 10 years ago | last reply 10 years ago
To Linuxism. Please, hold your applause. ;-) A handful of you may know that I've been fumbling with Linux since early in this year, tried every distro known to man (and then some) and didn't get heads or tails of it. Well, it finally clicked. I don't know how and I don't know why, but it did. I'm running Ubuntu 8.04 Hardy Heron and I plan on updating to 8.10 when it comes out on the 30th. Out of all the distros I've found, Ubuntu's the easiest, and Hardy Heron is better than any earlier version I've tried. I customized it to look how I want, and installed some of my favorite programs. It runs off of my 2gb flash drive at lightning speed, but when I upgrade to 8.10 I think I'll install it on a 4gb SDHC card. Of course, this doesn't mean that I'm a Linux leet h@x0r or anything. Linux is a journey of knowledge, and I think I've finally got off on a good start.
Topic by Labot2001 10 years ago | last reply 10 years ago
I've read that catalytic covnerters use platinum and hydrogen fuel cell required platinum. So is it possible? and is it a cheaper/more affective way to make a fuel cell then by buy platinum to build the fuel cell or buying an actual fuel cell?
Question by Sun Gear 6 years ago | last reply 6 years ago
In a web search looking for 12v Christmas lights to run off my small solar system, I found this; http://www.fly.net/~thundt/xmas12v.htm This looks very straight forward and easy enough to do.Has anyone here tried this?I bought a small set of solar powered at Target ($14.95). Way under powered and last only a few hours. It's going back today!This looks like a way to get brighter, longer lasting lights and I don't have to run my converter. My 160 AH battery should power it up nicely, I would think...Think I found a project for this afternoon!
Topic by olddawg 10 years ago | last reply 4 years ago