Isnt a car alternator just an electric motor that is acting as a generator? is there anyway to put two old matching ones on a base, attach tires, and power them with a car battery?
Question by hellstudios | last reply
hello im writing the best english i have ,cause its not my natural language can u say me alternatives for the MAX756 that have this caracteristics imput voltage: 1.5vDC ( an AA battery) output voltage: 5vDC @ more than 100mA the IC needs to be DIP ( no SMD please! im very noob soldering)
Question by Delta25
Hi, i cant find 2n1613 transistor here in my city. i want ur help in letting me know of any alternating transistor that i can use for my project. i'm making a mini variable power supply using this transistor but because of the shortage i'm unable to complete my project. i need ur help asap. THANKS
Question by pizzadox747 | last reply
Hi all. i'm pretty new to the electronics thing, and i'm just getting started with Arduino. i've decided to move on to motorized projects, such as IP cars and such, but i can't seem to find any decent motor controllers. as far as i can see, i need an L293D chip, but can't find one anywhere in south africa. are there any alternatives i could try? my appologies for being a noob. Thanks :-)
Question by dasta | last reply
On top is a joystick like an NES joystick. It registers 8 different directions: up, down, left, right, and the in-betweens of those and is controlled by the thumb. Then there are 4 buttons, one for each finger. The joystick replaces the trackpad of a laptop and hopefully is also 'clickable' to act as a 'left click button. I'm not sure what would do the right click button. Combinations of button presses and joystick directions would replace the keys on a keyboard. I only have the use of my right hand. I initially thought of this as a device for handicapped people like myself, but it would also be good for people lying in bed. The concept maybe could be made into a cell phone case with physical buttons that would allow people to text without looking at their phones. The device is a lot like the nintendo wi remote, but not quite. Maybe a wii remote could be hacked to make a prototype. I wouldn't know how to do that and I wouldn't know how to program it, that's why I'm posting, to see if someone could tell me what kind of skills/knowledge would be needed to make this idea happen. Any suggestions or offers to help are welcome. Thank you!
Topic by avocadostains | last reply
In a 24V alternator i'd like to manually (and variably) reduce the field current (5A) to 1A (in order to regulate the alternator output) can i do it with a rheostat? what kind of resistance must it have (rheostat specs)? is output current linear to field current? 5A field = 75A output, 1A field = 15A output ? thank you!
Question by raedy07 | last reply
I have made a system where i have a car alternator attached to a stool. Attached aroung the wheel of the alternator is medical tubing wrapped around a wheel. This wheel is held up by two pieces of wood. I have attached handles on either side of the wheel. On the alternator where the power is dispersed, I have soldered wires to an 1.5 Volt light. I am spinning the wheel left and right. But, it will not light the light. So the questions that I am asking are, which way do I need to spin the alternator wheel if I was looking at the wheel from the front, and how fast I need to spin the wheel. Any help would be appreciated!!! Thanks!
Question by Goalie1 | last reply
I have a car alternator that has 3 wires. The colors of the wires are white, black, and yellow. The alternator also has a pin at the bottem that says "Bat" so im guessing that goes to the negative terminal of the battery. I was wondering if some one could please tell me how to wire this alternator up so that when driven by a motor it will charge a 12 volt car battery. If you could please also add a picture of the wireing schematics that would also be very helpfull. I have looked all over the internet and could not find one site that told how to wire up the type of alternator I have. Thanks, Stefhan
Question by Stefhan Albayaty | last reply
Question by niksa21485 | last reply
What is the alternative, and what are the pros and cons compared to the arduino
Question by sunny342 | last reply
It is always easy to understand the working of Direct current, but I need to know about Alternating current right from the basics till advance. I would be grateful if you could help me understand about Alternating current better.
Question by DeeptiR3 | last reply
I'm new to this forum. I just got my welders certificate. I've seen on the web some projects that convert an auto alternator to a 300 amp welder. I live in an apt. and don't have 220V. I have a new mig welder and it works super for thin and medieum guage metal. My buzz box needs alot of power, about 15 KW, and even used generators are out of my range. Can anyone help?
Topic by CraigLam | last reply
Here's one to challenge your creativity. I read a lot of blogs, engadget, lifehacker etc... and these are mainly long pages of text and images. I've become bored of using a plain ole mouse wheel to scroll down and so i'm looking to make something overall cooler or easier to use. Note the use of OR before reading the next bit. I've had an idea of one method. Get one of those realistic fake cats that breathes and put the scroller in it's back. Then you can cradle it in your arms Dr. No style and stroke it's back, all the while scrolling down a page of your choice. I also thought of somehow making the whole right side of my desk a massive scrollbar, but it would be a bit complicated for my liking. So what do you think? Do you have any good ideas for ways to scroll down a page? Think everyday actions that involve some sort of scrolling motion, and keep it work safe.
Topic by whatsisface | last reply
I need a something that plots graphs (three-dimensional is better), solves differential equations and counts integrals - Maple would be ideal - plus I think that learning to use it is a nice constructive thing to do in the summer before starting university, but it costs a lot more than I can painlessly pay... Any ideas? Probably some older versions are free or cheap, or there are any other programs? I looks like I'm only going to use it in the summer as they probably should give something to students... To be more specific, I'm trying to learn GTR and calculate some geodesics.
Question by gruffalo child | last reply
I am currently in the Advanced Photography class at my high school. One of the assigned projects is simply titled "Alternative Photographic Technique." Basically, we have to create an image without using 35mm film (not digital, either). The specific techniques that he recommends are:Photogram-arranging objects directly on the photo paper, without using a camera at allHolga- The teacher has a few Holga cameras with 120 film for class use to take artistically lousy imagesPinhole Camera- If you don't know what this is, you probably can't answer my question anyway.Cyanotype- a special emulsion is painted on watercolor paper, then exposed in sunlight under a large transparency. Search "cyanotype" to see what it is.Polaroid image transfer- an image taken with a Polaroid Two-Step camera is transferred from the film to watercolor paper-looks cool, but expensiveCan anyone suggest other interesting ideas? I'd like to keep it simple and inexpensive, and I have to have 8"x10" total printed image.Weissensteinburg? Are you there?Edit 5-12-08: I have printed some 5x7s with my cool new technique. I matted them today, and I turn them in on Thursday.
Topic by CameronSS | last reply
Allright im looking for information on a number of different ways to ignite thermite. sure we've all heard of magnesium and yes it's usually third or fourth time is the charm also potassium permanganate which is pretty cool too and the ever popular sparkler of course lots of companies have taken out the magnesium chlorates and perchlorates from these sparklers and are now selling crappy ones without hazmat fees for them so they don't work worth a crap. i read an article from a guy stating he used simple visco fuse to light it even though ive heard it won't work but perhaps it depends on the mesh as in much finer. i use the dark german aluminum about 625 mesh and it will coat any and everything it touches. really though guys let's come up with some ways to lite thermite outside of tradition and share these methods of doing so along with how to obtain materialsin conventional and unorthodox ways because without frst time reliable ignition it's just no fun. also the first fire mix, much like the thermite ignition mix at united nuclear what exactly is it made of and how are some ways the monetarily cahllenged can obtain it and of course the not so challenged.
Topic by pyracantha | last reply
Here is an alternator. 75 amp 12 volts. But i m not sure how to connect the 3 wires.. what i know is that screw in black plastic case is battery +ve and alternator body is battery -ve, Please guide me how to use other 3 wires ( green black and yellow). Thankx in advance ;)
Topic by SyedA58 | last reply
I have a 25hp china single cylinder diesel engine and a 25kw alternator of 80% power efficiency. I have a 15kw electric motor attached to a vegetables oil expeller that I want to power. Can I use the 25hp diesel engine to power the 25kw alternator to get 15kw out of it to power the 15kw motor?
Question by TyogaS | last reply
I am working on way to charge electronics at long festivals. There is no electricity and then my camera dies. My solution is to bring a car battery and charge USB devices using car power/usb power adapter. My questions is about charging car batteries. I noticed that the highest charge setting on my wall-power car charger is 6 amps. A car alternator on the other hand supplies 65 amps. Why such a huge difference? When you jump start dead car battery and then charge the battery with the car running the alternator is the battery really charging at 65 amps? That is 10 times more current than from a wall charger.
Topic by Noblenutria | last reply
If you have a battery powered vehicle of some sort, can you put an alternator/generator or something on the axles to generate electricity to recharge the batteries the vehicle runs on? When the axle turns, the brushes pass over the coil generating electricity which is then routed back to the batteries thereby recharging the batteries. Please pardon the bad Paint drawing, but something like this.
Question by Zippomanonfire | last reply
I'm in need of some help, I'm working on a project including a steam powerer tesla turbine which I want to harvest surplus energy going into a boiler, it'll also serve as backup power generator in winter when the P.V.s slow down. I'm looking at a 2m long, 300mm dia boiler witha 100mm dia flue running through it, not sure what sort of pressures I'm looking at. This comes after a thermal mass rocket stove style combustion pipe burning wood. The tesla turbine will be ally plates in oil drum based housing (572mm, 22.5" dia). Any ideas what sort of alternator would be suitable and should I be thinking about any gearing?
Question by JohnA391 | last reply
I was looking through the MANY guides on the web for weldernators and I'm in the midst of putting it together. It suddenly occurred to me that my dad used to own both 5 and 3 phase AC welders and I thought "wait a minute, an alternator is 3 phase AC". I searched and searched but I'm doing a lot of searching on a smartphone because of a really long couple of work weeks, plus I suck at Google apparently. (If I wanted to buy one I could find that.) Anyway, I'm just not sure of how a 3 phase AC welder works. Maybe it just turns it into DC. They were just arc welders anyway.
Question by Andale_The_Great | last reply
What is the LM1778N IC and is there an alternative to it? Need two for this circuit: http://www.zen22142.zen.co.uk/Circuits/Audio/quad.htm Can't find anything about it online. Thanks, Edwin
Question by Eddiepers | last reply
I saw a post about an energy-generating device on shoes which generates electricity when walking. Piezoelectric transducers were used to generate energy but not enough to charge the battery full or even half full. Are there alternatives to Piezoelectric transducers that generates more energy than piezo? Thanks.
Question by charlotteferriols | last reply
I have a surplus of smartphones and a PDA/Kiosk device for store inventory. My question is, is it possible to use one or all of these devices and somehow create an UMPC? Maby flashed to Ubuntu? I am a massive cheep skate and if this is possible it could be as strong as my desktop that I assembled from freebies...
Question by GunzoZabuza | last reply
I was wondering if there was any other method to power the firing coil of a single stage coilgun without using capacitors. My main reasoning is to try to reduce recharge time, and to also avoid making massive groups of capacitors and finding a place to put them. It needs to be able to be powered by some form of battery, meaning I could connect voltage to this circuit (1.2 volts up to 12 volts. I'm not picky) and shouldn't consist of hard to find components. I'm not looking for the greatest efficiency in the world, just making a step (okay, maybe a stomp) toward building a 'capless coilgun'.
Question by Madrias357 | last reply
I was wondering if anyone knew of any lego nxt controllers apart from the supplied program? I'm not looking for r/c program, just something that, when given a command, will move the nxt motor in a certain way. I am trying to build possibly a 3D printer, but I would like it to be able to print from a 3d file.... Such as a lego CNC (if you search it on google you get a few). I would like to do this without codeing, but if i must, i might be able to learn. So anyone know of a program that can read 3d files and correspond them to lego motors? It can be windows/mac, im not picky. Or if there is a way to control the lego nxt from code, i might do that :) Thanks!
Question by astroboy907
I would like to know if it is possible to use a simple dc motor as an alternator in an rc car. i know i would need a diode, but i don't know if it would work or not. would it?
Question by zack247 | last reply
From questions I have read and step by step’s I have read a question came to my mind. How powerful of a motor do you need to run an alternator? I checked the Delco Remy alternator series from 10SI in 37 Amps, to the 40SI durable brushless model, in 240, 275, and 300 Amps. All their performance charts show rpm’s at the alternator not the motor. The pulley on the crankshaft is considerably larger than the pulley on the alternator, giving you more rpm’s at the alternator than at the motor. All their performance charts show rpm’s from 1200 to 8000 rpm’s. All their performance charts show at 3000 rpm’s you get 13/16ths of max power. The last 5000 rpm’s only gaining 3/16ths of power. The thing is none of the performance charts say the horsepower to drive the alternator. I decided to approach the problem from a different direction Typical alternator efficiencies are in the 54%-60% range. Brushless alternator efficiencies are in the 60% 70% range. A typical 12v 60 Amp alternator produces 720 watts at 55% efficiency. It needs just 1310 watts to drive it or a little under two horsepower at 1492 watts. This does not account for mechanical efficiency of connecting the alternator to the motor. With this in mind a three horsepower motor should drive a 12v 60 Amp alternator. This is just an educated guess but I would like a horsepower chart. 720 watts would do well at charging a battery bank while you sleep; however I could not run my microwave and charge batteries at the same time.
Question by Josehf Murchison | last reply
I have a conversion van with 2 deep cycle batteries in paralle hooked to my . I want to add a 200w solar power set up with a 30 amp solar charge controller to charge my batteries in conjunction with the alternator. I only drive 20 minutes a day and I live in my van. Can I hook up the solar set up with the alternator set up? I also have a 2,500 watt power inverter hooked to my 2 deep cycle batteries. If you have any information on a set up I can do please help, thank you.
Question by Creighton43 | last reply
I want to make an attachment for my bike that generates and stores power when I ride it. I'm thinking of using and old car's alternator, but I don't know much about electricity, so I'm asking for help. Also, how can I store the power? In a battery? I'm planning on hooking up a plug outlet, which might be removable to save space. Thanks!
Topic by jaredsalzano | last reply
How does the car or automobile mechanisms work? How does a Car or automobile clutch work in motion?
Every couple weeks a new instructable comes up on some green energy thing or another, but one I am really interested in is wind. The problem I see is that with wind ranges from 5 - 25 mph, the voltage change is extremely problematic. When I see people putting permanent magnets on alternators for use with wind, it seems ridiculous. Even if you are using an inefficient battery-storage off-grid system, you still need to maintain 12-15 volts to charge your battery, and an alternator is made to do that by varying the magnetic power. Now I understand the extremes of a alternator's voltage regulator are likely fairly narrow, but still quite useful in generating wind energy. What I am looking at is 3-5kw of grid-tied power. This is great and all, and possible in for me, but I don't see how I could maintain a stable enough input for it to work. Most inverters are for solar power and aren't grid tied. The next most common are grid tied solar which take 12v DC and scale it to 115 ac across three phases. Finding a grid-tie 5kw 3 phase in and out ac grid tie inverter is extremely hard, but not impossible. The only thing that is impossible is finding one that can handle highly unstable voltages. So the options I am left with are using a variable transformer to bring the wind power down to 12v and then rectifying it, then pumping it through an inverter which leaves me with 70 - 80 % of the original power. My other option is to, like a car alternator vary the rotor voltage to maintain the desired end voltage. The one problem I see with this is that there is a large amount of potential energy not tapped. For example lets use 1 as the relative output as well as the input to generate a magnetic field. If the speed is 1 then both in and out are 1. If the speed is 2 then the in will be .5 now the out should stay at 1. But if the in had remained at 1, then the out would be 2 so essentially you are losing half of your potential energy. This isn't a problem in cars because they aren't tapping the maximum power possible. All the time, they don't need it. This is a problem with wind turbines, so is there a way around this? What wold you recommend to do for grid-tied wind power.
Question by jj.inc | last reply
Ok, biker boys (and girls), I need help. After sitting all winter, I fired up my '73 Shovelhead. I had a battery charger attached (charging 12v @ 6 amps). The bike fired up on the fourth or fifth kick (YAY!!!), but then promptly fried the headlight, the taillight, and caught the charger on fire (in the carport). What do you think is wrong? Defective regulator? Poor regulator ground? I want to ride this weekend, so help me ASAP!!!!?
Question by skunkbait | last reply
I have tons of NiCd battery packs and tons of (sometimes) corresponding cordless drills. Only with a complicated discipline, involving several chargers, I can count on enough performance for a hard day's work. I did rejuvenate the individual cells by zapping; some packs improved, some packs died. The 'electric hubcap' site : http://members.shaw.ca/Craig-C/, states that a home made NiMH battery battery pack (several chains of 10 cells in parallel) can be charged and re-charged hundreds or thousands of times, and have a better performance than Lead-Acid... Is it worth the investment???
Question by BobS | last reply
I've got these two motors that run on direct AC (120 V). I want to generate electricity with them. Will they produce AC electricity that i can then feed through a bridge rectifier? Could you explain how an alternator generates electricity?
Question by cdubnbird | last reply