What would cause an electric motor, running a table saw, to suddenly start running at a faster speed than normal?
Topic by tablesawguy | last reply
I've got a couple of love birds in a big cage in my porch.But the things is that,this ugly black cat keeps constantly appearing out of nowhere and frightens these poor birds.The cat also makes attempts to grab them.I am asking for aid here cuz I know something a bit buzzing can keep the pussy off,anyone any bright ideas?(probably a helpful instructable).A security system which detects the villain and alerts me can also be effective.Any help would be greatly appreciated
Question by Adarsh_tronix | last reply
Hi, I came up with a new way of doing lighting and would like to post it as an Instructable. There's only a slight modification of existing components and standard electrical hardware is used, but I'm concerned I may be called out for possible electrical code violations. Are these checked by the Instructables crew or every project is treated with a warning that anyone using each project needs to be aware of electrical code issues? Thanks.
Question by aeyring | last reply
Hello. I have an apartment with no ceiling lights. I want to reroute electricity from the outlets to the ceiling. Is there anyway I can do this without breaking the wall or using molding? I basically want to get my wires together, electric tape them in place, plaster and paint over them. I was told to do it with surface wires but i cant find any more info. Help!
Topic by NataliN | last reply
Im am a novice at electics, i think that a coil of wire through a magnetic field will generate a charge, Yes/no? if so would a number of coils passing through one magnetic field be more or less efficient than 1 coil passing through many magnetic feilds?
Question by QSDR | last reply
Alright, so I'm working on a project, which I won't disclose at this time, and I need as many different ways to generate electricity as possible. Any and all ideas are welcome, nothing is too weird or unconventional. The on requirements are it needs too be portable and smallish, in theory it should be easily carried on say, a hiking trip or something. It also needs to be able, even with some circuitry, to charge a battery. Ideally 2 AA batteries in series, but higher than 3v is OK as well. So, I will compile all the ideas and, if they will work for my purposes, I will include it in my instructable I'm working on. Any suggestions are greatly appreciated and all ideas are welcome. Fire away!
Topic by dudes | last reply
Is there any components that set the minimum energy to pass through? When the energy is lower than the fix amount , no energy will be passing through. I'm trying to make a project. I'll put a dynamo on my bicycle, and it will be connected to 3 LEDs. When I cycle in low speed, only one LED will light up. When I increase my speed to certain level, 2 LEDs will light up and if it passes a certain speed all LED will light up. Any idea?
Topic by GohC | last reply
So I have made two different versions of this spark generator, one used a Marx generator design and the other with a voltage multiple design. Both are working well, but when I expose a lighter fluid soaked wick to either one neither can start the fire. So the only thing I can think of is that while I am generating the spark it isn't hot enough or I am generating the spark before the vapors can achieve the correct oxygen/fuel mixture. Any ideas? Both use a modified Flyswatter circuit.
Question by Jayccob | last reply
Good day!I have a special problem and I am not even sure this is the right place where to ask for help... I have carpet in my office and by walking around I get charged like a battery (electrostatic)...Often I touch someone and I get a shock! (Also the other person, at least I am not the only one...) This is pretty strong some times and annoying most of the times so I thought maybe I can make (or maybe it exists already) a bracelet or a ring or anything with a LED or with any kind of resistance that I could wear and it could "decharge" me. I think I can figure out how to make something fancy but I am not that, lets say, skilled in electronic and I don't know what would actually do the job. Am I the only one with such problem? Does anyone have any idea?
Question by RicKami | last reply
I am going to make an electric vehicle so my question is that how to calculate cost per unit,cost per mile for an electric vehicle? and ways to overcome weight issues so that when a person sits on the vehicle, the speed does not reduce or less. I am asking this because i want to make a vehicle that will cover many miles with less battery efficiently. I hope that everyone understands that what i am trying to ask
Question by yaseen_123 | last reply
I have an electric bike that has a 24 volt 450 watt motor, running on the back wheel. would it be possible to fit a front hub motor on the front wheel to ether help with charging the battery's while using the electric motor to run the bike or be able to power the motor when you have started to move. If this is possible what size hub motor would I need in the front wheel and what modification would I have to make.
Question by AlanV23 | last reply
Hey guys I am planning on building a semi cheap electric mountainboard. I would like 20+mph(25?) and am thinking that this is what i will need: Board: http://www.amazon.com/ATOM-91115-Atom-90-MountainBoard/dp/B002ZFBYYY/ref=sr_1_1?s=sporting-goods&ie;=UTF8&qid;=1315867971&sr;=1-1 Motor: http://www.batteryspace.com/DC-Motor-Heavy-Duty-24V-DC-Motor-750W-2600RPM-28A-rate.aspx ESC: Im not sure on this one, HELP! I would like a rc esc not a scooter controller. Batteries: 2x http://www.batteryspace.com/nimhrechargeablecellcsize12v5000mahwithtabs10pcs.aspx OR 2x http://www.batteryspace.com/sealedleadacidbattery12v75ah20hrsforupsseascooterande-bikes.aspx Transmitter/reciever: http://www.hobbyking.com/hobbyking/store/__10608__Hobby_King_GT_2_2_4Ghz_2Ch_Tx_Rx_.html (Or something like this, I'd rather not buy from Japan for shipping costs.) Will a rc esc work and talk with my motor? They are both DC but idk if they will. I know battery type doesnt matter as long as the esc gets the power. So I was wondering if you could help me find a suitable brushed 24v 28a+ esc... Thanks I hope this will be a fun project!!
Question by chopstx | last reply
Would you believe, electric cars that are winning against their gas guzzling cousins? ...drag racers are enabling small electric vehicles to beat gasoline-powered Corvettes and VipersCharles J. Murray, Senior Technical Editor -- Design News, May 25, 2009Drag racing Electric Cars
Topic by Goodhart | last reply
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 | last reply
I would like to make the LEDs in the pre-wired controller in the first picture shown blink to music using the formula in the second. I was thinking that I would need to leave the +/- coming out of the controller on different power than the LED strips this way you have constant power to the controller and therefore the remote to control the colors. Anyone know how I can incorporate this?
Topic by chunkyblamm | last reply
I have the disc motor out of a Polaroid portable DVD player, and would like to use in one of my projects. However, it doesn't have an indication of what power it needs on it. There is a serial number or item code on the side, but no manufacturer to check for a data sheet, and Googling the code (TM2458 on the top line, GG54 on the bottom line) yields no results. I need enough information to power the motor using either a battery or Arduino. Please help?
Question by Levitationist7 | last reply
Hello guys I thought you could help me out with this a little bit. So I went to the dollar store looking for some. I'd like hack some to what I want, but first I need to know how it works! Um want to know what these things are on the board and what it is. So, I want to know what that black blob is on PCB and also that barrel shaped thing and why is the siren hooked up to that barrel. Thanks guys!
Topic by HavocRC | last reply
I came across this AC safety info and found it useful enough to share. Link: www.cdc.gov/niosh/docs/98-131/overview.html FTA: 1 mA Barely perceptible 16 mA Max current an average person can grasp and let go 20 mA Paralysis of respitory muscles 100 mA Ventricular fibrillation threshold 2 Amps Cardiac standstill and internal organ damage 15/20 Common fuse or breaker opens circuit I later found this DC info... Link: www.allaboutcircuits.com/vol_1/chpt_3/4.html FTA: "AC ... is 3 to 5 more dangerous than DC of the same voltage and amperage." Slight sensation felt at hands DC Men: 1.0mA, Women: 0.6mA 60 Hz AC Men: 0.4mA, Women: 0.3mA ... Painful, but voluntary muscle control maintained DC Men: 62mA, Women: 41mA 60 Hz AC Men: 9mA, Women: 6mA ... "In industry, 30 volts is generally considered to be a conservative threshold value for dangerous voltage. The cautious person should regard any voltage above 30 as theratening, not relying on normal body resistance for protection against shock."
Topic by milsorgen | last reply
Question by mgandhiraj | last reply
I saw an electric lady in a travelling sideshow. The type where she throws sparks from the hands, makes paper burst into flames and causes bulbs to light by holding them. I'm assuming they are using a high frequency power supply (very low amps), and I was wondering if anyone has built one and if there are any good schematics on line?
Topic by Divet | last reply
I want to run electric back to a cabin in the woods its about 740 ft from power source. What cable do I use and do I need a step up transformer to get more amps back to cabin? What size wire for at least 20 amps + to reach cabin? Power source is 30 amp
Question by MichaelM352 | last reply
Question by kiwiblue | last reply
Is it possible to make a 100hp electric ac motor? I have a workshop so all tools are available. Using ndfeb magnets or electromagnets which are efficient for this electric motor any one know about this plz help even small help is admirable .....................
Topic by kacarot | last reply
I am working on getting all the supplies together for my first instructable. The item I am building (not giving out many details) will have 5 different motors on it. I think all motors will be the same model. However I want one motor to run quite slower. Can I do this without having to run it off a lower voltage power supply. Now that I think of it I suppose there is plenty of room in my item for a 2nd power supply. But this will still be good information for me to have in the future. Oh and the main power supply for the item will be either 3 - 6 volts I believe. AA batteries in case this matters at all. Thank you in advance for your help in this matter.
Topic by jcaresheets | last reply
I am looking for a timer, much like the kind often used for lamps when you are out of town... set up a timing loop and it cycles power off/on to a device plugged into it. My problem is that all such devices I can find operate on intervals near 1 hour (the quickest I have found has a minimum 15 minute off/on cycle). I need to switch off a device for a few seconds, once each hour or so. My current rough estimate is to go ~59 minutes 40 seconds on, then ~20 seconds off. I may need to tweak that though so something programmable would be great. I am not an electrical pro, but neither am I a stranger to circuits or house wiring. I know all the safety precautions and can solder/assemble components... I would just not be able to come up with my own schematics to create something like this. If anyone is aware of an existing device, I could purchase it... but I would sortof like to DIY it anyway.
Topic by karossii | last reply
I would like to find a electric wheelchair/electric wheelchair motors to make a RC snow plow for one of my disabled friends. any ideas of where i could get one dirt cheap \ free round the northern MD area. any ideas would be greatly appreciated.
Question by bigbodysmallbrain | last reply
Electricity Transmitter and receiver. is there anything such as that. simple though. when i press a button it transmits a signal and the receiver receives this signal and releases electricity. heres a little diagram: O------T B-R-----M O=Button T=Transmitter R=Receiver B=Battery M=Button -=Wire =Air? the receiver is powered by the battery
Question by pkataria1 | last reply
I have a rather old guitar (ibanez jx70tbs1301) and i have connected it to a computer via 4 inch to 3.5 adapter to record in audacity. I get a static sound and if i touch the right side of the pickup or press on a key on a key board it gets louder or annoying. I tried dryer sheets. Im confused. Would it be the patch cord?
Question by Mattchelor | last reply
Dear All... Please help me to know aluminum powder is conduct electricity ??? Because I have bough ALUMINUM metal POWDER 99.7% Lab Chemical 425 mesh µ35 on EBAY. for making conduct electricity paste But when measured with my digital meter at 20 meg ohm with 1mm distant I don't see any resistant .Thank you in advance for your time. Best regards HAPPY NEW YEAR
Question by lam | last reply
For a project in school we are designing a simple electric generator using copper wire and a magnet. The output i'm aiming for is 15V .The fixed criteria for Faraday's law as followsE =( NBA ) / T T= 3 seconds N = adjustable A = adjustable B = Neodymium 1.32 T so how do i chose my copper wire? what diameter? what kind? how do i keep the design not so BIG . How do i increase my voltage output by using a double coil system?
Question by CharithH4 | last reply