electrical question

How do I rewire the power cord to a Thermadyne 38 plasma cutter power switch, not having a cord to begin with?

Question by tamban282   |  last reply


Electrical in code?

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


Electrical components

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


Electric scooter?

Has anybody made a electric scooter that is ran off of a drill motor that takes 7.2v?????

Question by TSC   |  last reply


Electric motor

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


free electricity

I have a free source electricity of 51.2 v from a phone line can i reduce it into 12 v to make a 12 v bulb glow

Question by faintedbrain_007   |  last reply


Wireless electricity?

How do I wire my tesla coil to power multiple receivers and how do I wire receivers if necessary

Question by wiccakingkamui   |  last reply


ELECTRICAL TRANSFORMER? Answered

20 AMPS 12-0-12 VOLTS  BOBBIN SIZE PRIMARY WIRE SIZE AND TURNS SECONDARY WIRE SIZE AND TURNS HELP ME ANY ONE  PLEASE

Question by imamfarid   |  last reply


Rerouting electricity

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


generating electricity?

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


electric motors

I am considering motorizing my bike for my work commute. However I don't have enough knowledge about motor output as in torque / rpms to be able to determine what kind of characteristic I should be looking for. For many of the electric motors I am finding online, it doesn't really say the torque output. Is there a spec such as watts that I can judge a motor by? What specs should I be looking for in a motor that can assist in moving my weight. Or an links to good knowledge sites would be great too. Thanks.

Topic by aeneas shrike   |  last reply


electricity generators

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


An electric fence?

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


Electric Ignition?

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


Electricity for the challenged

I have a US plug AC/DC power adapter and need to get a European version. The specks on the adapter are input: 120VAC 60Hz 24 W and the output: 10 VDC 1400mA. I really don't have a clue as to what all these numbers mean but understand at a bare minimum I need something with a 10 VDC output. I've looked around at some shops and can find adapters that say 9v 1000mA and others that are 12v 1500mA. Do I need to get the exact voltage (I presume the v stands for volts)? What about the amperes ( I believe that mA is some increment of amperage)? Can I fudge the numbers a bit to save money and time instead of trying to get the exact configuration of the original adapter? Thanks for any help in clarifying this for me.

Topic by Crackpot   |  last reply


Electric touch...

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



Electronic schematics?

I need a free electronic shcematics Program that checks my circuits.

Topic by OrIsIt   |  last reply



What is this electrical component? Answered

Can anyone tell me what this is? and if so a good site to by it. thank you!

Question by nfarrow   |  last reply



Electric shock device Answered

A friend of my fathers had a dry cell powered device with two metal handles you gripped while the operator slid a rod in a coil to increase voltage. the idea was to hang on till you couldn't. These drunks would hold on till the thing made their wrist muscles contract their hands into claws. How would you build this thing? Thanks, Zappenfusen

Question by zappenfusen   |  last reply


how to find DC capacitor for single phase active power filter?

I am designing single phase active filter, I want formula for Dc capacitor (inverter side) with explanation. Plz........

Question by ssawant4 


Battery Power Capability (C)

I'm trying to understand a little bit more about batteries. I've learnt so far: "Volts,  amps, and  watts measure electricity. Volts measure the “pressure” under which electricity flows. Amps measure the amount of electric current. Watts measure the amount of work done by a certain amount of current at a certain pressure or voltage." Now I'm interested in knowing the maximum amount of energy you can draw from a battery at any one time. I presume you can't instantly drain a batteries full energy capacity at any one time. I have read that: "The way the power capability is measured is in C's. A C is the Amp-hour capacity divided by 1 hour. So the C of a 2Ah battery is 2A. The amount of current a battery 'likes' to have drawn from it is measured in C. The higher the C the more current you can draw from the battery without exhausting it prematurely. Lead acid batteries can have very high C values (10C or higher) , and lithium coin cells have very low ones (0.01C)" Am I write in saying a 1.2V 1200mAh has a power capability of 1.2C? In which case I should only ever draw 1.2C or less to preserve the battery? How do I increase this amount when using 2 batteries, if I wire two batteries together does the power capability increase to 2.4C for the above example batteries? If so do I have to wire them in parallel or series for this to work? Thank you.

Topic by jakespikey   |  last reply


Convert magnetic to electrical? Answered

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


If a switch is rated at 50V 0.5A, can it handle more amps at a lower voltage?

If a switch is rated at handling 50V 0.5A, can it handle more amps at a lower voltage? could it handle say 3A at 8V? (50v/8v=6.25 x 0.5A = 3.125A)

Question by supramp 


I wanna frequency converter transformer ?

Hi Everyone I wanna to know where can i get frequency converter transformer that it's input is 2 wire (220v-50hz) and it's output is 3 wire where the voltage between any wire and com. is 110v and between the two wires is 220v

Question by MohamedE7   |  last reply


Anybody have any clue how to hook one a wind turbine to help power my home.? Answered

Ive been looking through a bunch of instructables but all the wind turbines only charge batteries. I would deeply enjoy if someone could explain how to attach it to a house on a grid. thanks.

Question by CrawdadMan   |  last reply


help me make an innovative thing?

Hai friends,                   i want to create an innovative thing. i am having the components as listed below 1.12volt solar panel 2. Breadboard 3.5v voltage regulator 4.batttery 5.inverter 6.mobile display. with th help of these what can i create. please give me some good ideas

Question by rbavithr   |  last reply


How can I regulate amperage from going over a set point?

I have a very expensive IP addressable thermostat and the relays can only handle .5 amps, not very much at all, but for a 24 volt thermostat it is plenty. The house was hit by lightning 1 year ago and now I am getting spikes of .75 amps and I have fried 2 more $400.00 thermostats, can I use a resistor or some type of regulator to control this?

Question by pioneer407   |  last reply


Can someone explain the workings of this charger schematic?

I took apart my Black and Decker cordless drill charger, and drew this schematic to my best ability. I am trying to understand it to my best of my ability and what each component is responsible and how it charges the battery. From my understanding D1 only allows energy to flow to the battery. But if the potential of the battery is lower then the charger's shouldnt that be not a problem? Since it will always be more and push the electrons to the battery? The resistor and the LED are understandable, but the job of NPN (might be wrong ) transistor is a mystery to me.

Question by Eax5   |  last reply


Electrical Circuit Help

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


wire electric in house?

Question by acherryl   |  last reply


electric shaver ideas? Answered

I have an electric shaver but the battery recently burned out, any ideas for what i can do with it or the parts?

Question by embochner   |  last reply


Turn a thunderbird into an electric?

Hey any ideas? It's a '96 with a v8 engine. Frankly, I'll be more impressed with an electric motor. I know it's not the ideal car to do this with, but I want to give it a try anyway.

Topic by firedragoon8605   |  last reply


about electricity generation?

I want to create a electricity by moving two wheelers ????how???tell me plz

Question by shashank999   |  last reply


FAST electric cars.....

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


ørst electrical conductor? Answered

Ørst electrical conductor can anyone tell me what this is. Google no help. The phrase comes from a patent application: https://www.google.com/patents/WO2010123903A1?cl=en

Question by rickharris   |  last reply


seized electric motor

I'm trying to fix a dishwasher. The pump motor seems to be seized. It doesn't __feel___ that stuck, and has spun for me 1 out of 5 times. Any ideas on how to fix it?

Topic by Toga_Dan   |  last reply


related to electric vehicle?

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


Electric bike generator?

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


Convert to Electric Car? Answered

Ok i had a powerful, fast, and great RC car, but the carb went out, i tried a different carb but it just wouldn't turn over, how can i convert it to Electric and still be fast?

Question by Yerboogieman   |  last reply


electric release latch

Hi! I'm trying to figure out how to go about creating a latch where applying an electrical current would release it. Probably something involving an electromagnet. I apologize (1) for the sudden flurry of board posts, and (2) if this is not the best board for this specific question - I know it's not exceptionally techy, but it looked like the best option. Thanks!!!!!!!!!

Topic by Purple Chez   |  last reply


Electric motor specs? Answered

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


What are these electric components?

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


Electric Mountainboard Build? Answered

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


Safety, Electricity and Death

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



Electrical timer for a water heater

I would like to have a water heater of mine turn on and off with a timer.Its important that the range of the timer is from 0 - 20 minutes. its also important that it can switch on an element that will draw 2000 watts. The timer must be a simple dial and knob type not a digital programmable. It can also be a press button for the amount of minutes example: press 7 times for 7 minutes? any ideas Dino

Question by jollyboats   |  last reply


how Accelerometer work in Electrical car to measure acceleration ?

I am working on electrical car sensor system . i have many sensors in car for different purpose. one of it is accelerometer. My task is to measure the acceleration of car using accelerometer or gyroscope by Microcontroller . Please give me some brief idea about it .

Question by RushitK   |  last reply