FREE DOWNLOAD The Boy Electrician

Rawfire.torche.com/~opcom/ Scroll down to the electronics section on the above link, for a copy of The Boy Electrician, its a 40-Mb PDF download. Its not a great scan, but is readable. My copy right adviser has said The Boy Electrician copyright expired and was never renewed, new new material included with a copy, can be protected. This copy seems to be okay. As for my copy, I got the go ahead, and will be taking my time to do a really clean scan before I upload it to the Internet Archive, however, before that, I might upload the above mentioned copy as a stop-gap measure.

Topic by Lateral Thinker 9 years ago  |  last reply 9 years ago


need help from an electrician?

Ok, basicly i want to make a little green light. Basicly it will go from a (Solar Cell-and or-Motor) to a (Battery that will collect the electricity from the Solar Cell/Motor) then to a lot of (LED's for a light) ()-each part. what would i need to make this work?

Question by Deimos1 9 years ago  |  last reply 9 years ago


Electricians Qualifications and how we can get them

Electricians are those who concentrate in creating, working on and designing electrical systems. There are specific types of Electricians who concentrate on certain types of electronics work.

Topic by supreet 9 years ago


Acrylic Heating Element - Questions for an electrician and acrylic expert

I'm trying to build a heating element suspended 1" from an aluminum surface, and 2" below what will be a piece of acrylic (hopefully up to 1/2" thick) suspended by aluminum covered 2x4's. I want to have a rheostat (I think that's what they're called) for variable control of the heating element. The width of the element is undetermined, although 1/2" is probably close and this may be of little relevance. The aluminum case itself is 21"x6" and 3" deep So far, I've harvested a coil of Nickel Chromium from a cheap space heater but in trying to create a suspended piece, I've done little but destroy my NiChrom. It was cool, sparks and all, but I'd like to get it right this time. I do not wish to use a torch or heat gun as the pieces are to be wide and the heat must be even over the width to create an aesthetic bend. I will post some photos of the pieces tomorrow. Feel free to throw your hat in on any questions you want to answer. Electric Questions: How much NiChrom. do I need to heat 1/2" acrylic to around 400 degrees (F) for malleabiity? What is the best way to mount or suspend the nichrom.? What is the appropriate method to attach NiChrome to the wiring? (My home made coil using 1/16" copper wiring as a cast was sound in theory, but practice yielded sagging of the strip when active, and eventually sparky explosions at the mounts, after which time this question came to mind.) What kind of Rheostat do I need? What kinds are there? What's the difference? Can I get away with using a 120v/600w Dimmer switch instead (please say 'yes')? Acrylic Questions: What is the ideal heat for bending thicker acrylics? Would a fan below the heating element help disperse the heat evenly over the acrylic, or mess up the dispersion? Can a heating element such as this create sufficient heat to 'weld' 2 pieces together? Is this even possible? Thanks. I'm sure I'll have more questions before you can answer those. Peace - Ian.Wms

Topic by Ian.Wms 11 years ago  |  last reply 3 years ago


Attention Masons, Carpenters, Electricians, Plumbers, Farmers and Handy-Men

Attention Masons, Carpenters, Electricians, Plumbers, Farmers and Handy-Men We have a beautiful Farm in upstate New York. Looking for hard working, good, drug-free people to come work with us. In exchange for your labor we will share the harvest with you and your family! Work for natural ORGANIC food and meat. This is a LIFESTYLE opportunity. A way for you and your loved ones to benefit directly from the fruits of your labor. Eat what you grow! A new, clean, healthy and fulfilled lifestyle is just around the corner! Serious Inquiries Only. This is not a monetarily paid job. Email for more. 

Topic by eglenn3 8 years ago


Attention Masons, Carpenters, Electricians, Plumbers, Farmers and Handy-Men ect.

Attention Masons, Carpenters, Electricians, Plumbers, Farmers and Handy-Men We have a beautiful Farm in upstate New York. Looking for hard working, good, drug-free people to come work with us. In exchange for your labor we will share the harvest with you and your family! Work for natural ORGANIC food and meat. This is a LIFESTYLE opportunity. A way for you and your loved ones to benefit directly from the fruits of your labor. Eat what you grow! A new, clean, healthy and fulfilled lifestyle is just around the corner! Serious Inquiries Only. This is not a monetarily paid job. Email for more. 

Topic by eglenn3 8 years ago


Electrician help! Dimmer Switch says 'do not use with less than 60 watts'. Why? Answered

I'm looking to run some screen lighting for my projector - but its only 30 watts total (among 5 lights tranformers, tolerant of funky AC)... Will the triac inside not fire properly without load?

Question by frollard 10 years ago  |  last reply 7 years ago


Creative Electrician or Consultant Wanted for Short-Term Project (Good money.)

I'm the owner of a 3-story commercial building in New York City. I basically have 2 tenants: One using the ground floor and basement, the other using the 2nd and 3rd floors. I am trying to sub-meter the electrical use of each tenant so they can pay for their own usage (and have an incentive to conserve). For the last several months I have been interviewing licensed electricians. Apparently, though there are two separate fuse boxes (It's an old building.) they each have both upstairs and downstairs circuits mixed up in them. This, I have been told, will make sub-metering a more complicated and expensive job than it should be (potentially over 5 figures.) as it will involve rewiring. Now, in my experience, most licensed electricians think Arduino is a kind of pasta. They are not hackers, not creative, and never look for unconventional solutions to solving problems. (I'm not knocking the guys, but this is what joining the rat race for survival does to people--especially in NYC.) It never even occurred to me that there might be an unconventional solution to my problem until I spotted this 'ible. If you: Have the skills to implement an adaption of this set-up, or have a proposal of your own as to how to solve my problem; are close to New York; and would be willing to consult with a licensed electrician and myself, you may very well be able to save me $5k or $6k, 60% of which would go to you if the plan was adopted and worked. (Otherwise I'd still compensate you for your time at a rate we both agree in advance to be fair.) Anyone interested please PM me.  Thanks. PS I don't think of myself as a businessman or landlord. I inherited the building, would sell it in a heartbeat if my brother (who I co-own it with) let me, and I'd rather be writing and making stuff out things I find dumpster-diving than collecting rent checks. But since I'm currently stuck in the role, I'm trying to make the building as green as I can.

Topic by joachimboaz 7 years ago  |  last reply 7 years ago



How do I power my 50 red 3-watt LED's and my 20 blue 3-watt LED's without using resistors to make a panel?? PLEASE HELP

I am no electrician and am having no luck searching the internet on how to power the LEDs. I am trying to build a grow light with 50 - 3 watt Red LED lights and 20 - 3 watt BLUE LED lights. The total power consumed would be 210 watts. Specs for Blue lights: DC Forward Voltage (VF): 3.2 Vdc ~ 4.0 Vdc DC Forward Current (IF): Typ 650mA Specs for Red lights: DC Forward Voltage (VF): 2.0 ~ 2.8 Vdc DC Forward Current (IF): Typ 650mA I know a lot of things on the internet call for resistors but for this project, resistors would give off far too much heat. I know that an LED driver can be used in place of the resistors, but I don't know anything about voltage or amps. I have found a few 200W LED drivers that connect to an outlet and convert the power to a 24V DC, which is usable by LED's. I just don't know if that's all I have to do: connect the driver to the LEDs in a parallel circuit. Actually, I don't know how to find the Constant Current Module that I need at all. PLEASE HELP ME!

Question by ammakrom 8 years ago  |  last reply 4 years ago


Unique Job Opportunity - deadline Friday

Are you a plumber or an electrician with a sense of adventure, few ties and a willingness to work hard and play hard?Then this could be the job for you!The British Antarctic Survey is looking for both jobs, to start as soon as possible, for contracts up to 18 months long.The salary is relatively low (roughly $50,000 per year), but accommodation is provided, living costs are extremely low, and the experience would be unrepeatable.If you think you're up to the challenge, you need to complete the online application before the 12th September.Plumber vacancyElectrician vacancyUPDATE: The BBC also covered this story.

Topic by Kiteman 10 years ago  |  last reply 10 years ago


Connect a wind powered generator, producing AC power, directly to my house?

What is needed to connect a wind powered generator, producing AC power, directly to my house? I've been looking into wind generators that use F&P Smart Drives. But all of the information I've come across is how to set up a DC system. Based on what I've read, and I'm no electrician, the F&P Smart Drive should be able to produce enough AC power to reduce my electric bill substantially. I'm hoping to find a list of parts, equipment, or a kit that an electrician would need to complete the AC connection. Thanks in advance

Question by bgdecker 10 years ago  |  last reply 10 years ago


how to repair a remote ?

 i tried to change the conducting pad but it  was a failure  . all my buttons of the remote are not working. it had started with 1&2 but now all are not working . i tried to take it to take it to the electrician but he said that they don`t repair small things . so please help....

Question by Simon92 6 years ago  |  last reply 6 years ago


Switching

Hi, I am new to electronics although I am an electrician by trade. I need to know if there is a way to switch a load electronically. It needs to switch from one load to another. I also need to know if there is a way to monitor current flow so that it switches when it hits a specified current. Thanks in advance Edd

Topic by eddcole 10 years ago  |  last reply 10 years ago


how do I get broken piece of plug out of an electrical outlet?

A plug for a portable radiator burnt out and part is stuck in the electrical outlet. The other portion of the outlet is occupied by the washing machine plug. Is there a simple, and safe way to remove this piece without calling an electrician?

Question by 10 years ago  |  last reply 1 year ago


scratches on polished marble,granite?

Hi, An electrician put a five gal. pail with tools on the tub surround and put surface scratches on it. The surface is polished to a shiny sheen.The marble co. I asked about the repair said they'd send a 2 man crew-I don't need the expense right now- Any suggestions? Thanks

Question by timesaverhandyman 9 years ago  |  last reply 7 years ago


I have a "dead" line wire in my GFCI outlet. What now?

I used a tester to find the line wires in my GFCI outlet.  I have a live black wire but both of the white ones are dead.  Does anyone have a suggestion or do I need to call an electrician?

Question by SherryH16 3 years ago  |  last reply 3 years ago


How many led lights can I power with 5v 2000mAh power bank?

I'm a guy who tries everything. Not an engineer or electrician but I would like to make a DIY camera light using LED strip and one or 2 5V powerbanks. Please advice on how to go about it.

Question by ShingaiG 2 years ago  |  last reply 2 years ago


Any tips for running cable (speaker wire, Cat5) behind drywall?

I have an attic and no basement and there is blown insulation all over. I am an electrical engineer but that only helps with the planning part. The actual work is something I plan to get help with from one of my electricians. Any tips would be helpful and appreciated.

Question by jnixon21 10 years ago  |  last reply 10 years ago


Make a Generator

Alright so here is what I am looking for. I need a small generator that could fit inside of a box-fan. I've seen things about stepper motors and all but I need the absolute most simple generator you can come up with. I'm no electrician and I don't own a soldering iron, can anyone help?

Topic by reedz 10 years ago  |  last reply 10 years ago


Question about USB powered Fan.

Hello! I saw this tutorial... https://www.instructables.com/id/E5EU54XP26EP2871HG/And I'm not an electrician or an engineer and am not familiar with ohms or watts or whatever. But I read in the comments that USB has a 5v power output. Uhm, is it possible to get a 12v Led Fan cooler and power it via USB? Becaue I can't find anyone selling 3pin molex connectors that converts to USB.

Topic by YOHAN 12 years ago


how to test neon transformers? Answered

I got 4 neon transformers on a dumpster dive. 2 are rated 6000v and 2 are rated 7500v. my multimeter only goes to 750v ac. i have insulated tools (im and electrician) can i just arc the output wires? if anybody is interested in them to build something cool i might be persuaded to give them to you for shipping costs.

Question by dannemillerd 7 years ago  |  last reply 7 years ago


I'd like to run a 230V pump from house current (US). Answered

I bought a March 809-02 pump on eBay and sadly didn't pay attention to the voltage for it.I got it to transfer hot water in my brewing projects. I have basic skills but I want to be safe about it. If this is a thing best left to a truly qualified electrician, I will do so. Thanks in advance.Sean

Question by tireswing 8 years ago  |  last reply 8 years ago


How do you get surface scratches out of marble or granite?

Hi, An electrician worked at the house and put his 5 gal. pail of tools on the tub surround and put scratches on the polished surface. The marble co. says they have to send a 2 man team to fix it,obviously that would be very expensive. Any suggestions to avoid the expense I don't need right now? Thanks

Question by timesaver 9 years ago  |  last reply 9 years ago


Home DIY Questions

The house i live in is falling apart at the seams. I fix every problem as it arises but a few things have stumped me or I've just never tackled them before. Any advice? 1. Gaping holes in Brick/Plaster walls left by electricians? 2. Panel from door punched through and sticky taped in good dodgy tradition. An attempt appears to have been made before to repair but the material has swelled with moisture (bathroom door). ? Cheers.

Topic by terielise 6 years ago  |  last reply 6 years ago


The "Ask a Question" feature activity is down ( substantialy LESS ) in recent memory

There used to be a lot more traffic activity in this  Ask a Question  area of instructables. Since changing the access to this feature there has a marked decrease of new adult questions ! Now we mostly see many youngster Padawan electricians and some old guard members. Maybe the old access button could be returned to the more prominent position of years ago. That would please me.:-) Maybe I am venting about a trend due to expanding social media. Thanks for reading, Alex....

Topic by iceng 5 years ago  |  last reply 5 years ago


Voltage increase after a 100 meter cable?

Hi all  So in one project we have an MDB that with a voltage of L1 : 243 L2 : 245 L3 : 243 , these values are normal in my country but the problem is that in the SDB that is around 100 meters away with around 4.5% voltage drop ( the schools electrician knew what he was doing apparently ) and the voltage at the SDB is L1 : 246 L2 : 250 L3 : 247 , i am a bit confused is why the voltage increased where the voltage drop is high and should be lower at the SDB than the MDB . 

Question by ShadiG1 2 years ago  |  last reply 2 years ago


Arduino Metal Detector[HOW TO]?

Hello. I LOVE treasure hunting, but I don't have enough money to buy a metal detector.. Yesterday I bought an Arduino Duemilanove on ebay, the only thing I know is taht its an Atmega 328. Does anyone have any tutorial on how to build it? Please don't give me schematics because I have a bad time reading them, as I'm a mechanic not an electrician. So, I need a tutorial that explains the circuit and the code too. I know I ask much but I really want this metal detector really bad..

Question by dsirotic 5 years ago  |  last reply 3 years ago


how to reverse the polarity of a DC motor using a DPDT relay, limit switch, and timer?

Ok, i am not an electrician and understand very little, but here's what i want to do.  I have a reversable 18V cordless drill I have taken apart to get at just the motor.  What I want it to do is turn on automaticallly with a timer in one direction and shut off (with a limit switch?) after about 2 seconds.  About 14 hours later I need the opposite action. Both actions automatic using a timer with AC power.  The application is a door opening and closing veritcally (chicken coop door).

Question by StevesBees 7 years ago  |  last reply 2 months ago


LED/PCB mods. I adapt cheap led lights. Will gooping the pcb to weatherproof it shorten life? Answered

I'm an old electrician obsessed with LEDs and selling them to my old customers. I build custom landscape fixtures and have been purchasing cheap led lights and bastardizing them for parts. I've had several that moisture got to the pcb and it died of various causes. I've been gooping the supply wire solder points among other things to increase durability. If I goop the entire back of the board the smd is on, will it cook itself?  Any other ideas to increase durability without shortening life expectancy drastically will be greatly appreciated. Zappenfusen 

Question by zappenfusen 9 years ago  |  last reply 9 years ago


LOVE or HATE

Ever spend time with someone and can't remember how many times they say or do something that you HATE? How about making a small push button device that allows you to push the button each time you want to say "I hate/love/ whatever", along with a sound and a visible counter for number of times the button is pushed? Easy way to decide at the end of the day if you really like this person or not............ The components must be small enough to be able to carry the device in your hand for instant counting. Just a thought...smile :) Any ideas on how to costruct this idea would be appreciated: P.S......I'm not much of an electrician or engineer so the simplest of plans is a neccesity. Thanks in advance Sam s.p.in.imperial@hotmail.com

Topic by samdotcom 6 years ago  |  last reply 6 years ago


110v to 12vdc conversion

Ok so long story short i want to make a serious home theater system. i have all the amps and speakers, but they are from a car. so i will need to run them from 12ish volts from my home outlets. so i cam wondering what kind of adaptor i should be making or using. i see pre-made ones that have an output of 12v with their amps ranging from 3-15 and watts from 3 to 300. i am no electrician and have little electrical experience, so i am wondering if i should go with more or less amps and watts, i dont need to fry anything as the amp and speakers i have are expensive! THANKS!  

Topic by mrmoose87 6 years ago  |  last reply 6 years ago


Coming soon :) The Man Cave

Most of my instructables have been a couple of hours from start to finish because I'm absolutely useless at finishing something off once I've started it.  Well this has taken about six weeks so far... My friends and I are doing something hush hush since I moved into a new house - outside we had an old outbuilding - a dilapidated recording studio.  I got permission from my wife to turn it into a man cave  What is contained in a man cave... you'll have to wait - electrician and plasterer coming soon and I've ordered all the equipment! Very excited! But it does explain why I've been quiet on the posting front till just now!

Topic by tim_n 8 years ago  |  last reply 8 years ago


Going green : Saving the planet project : Come here !

Hello everyone. Looking at the rising of all the awareness programs of saving the planet and going green. I thought why not we here at instructables could gather and make a small team of engineers, electricians, high voltage people, hobbits, and project builders to share ideas on how to save the planet and go green. the main purpose of this topic is to discuss and design new gadgets, machines and mechanisms to save the planet to carbon emission and use of fossil fuel. So if you have a idea people over here could evaluate it and try to test is out......who knows it could be a future source of energy to the world. So your ideas and suggestions are welcomed.

Topic by arylic 10 years ago  |  last reply 10 years ago


USB generator

I am building a small crank-powered generator for a college electronics class that will power a USB port. I know a USB port supplies 5V DC, and that my generator will obviously produce AC current, but I'm not sure the best way to convert AC to DC, then how to step my voltage up to 5 volts. My generator uses 6 wire coils in a circular pattern. 12 neodymium magnet rotate over the coils. This doesn't seem like the most efficient design ever, but that part is a stock university kit, the wiring is up to me. I've only been able to test each coil at a time, and each one produces .5-.7 VAC. Do any electricians out there have some tips? When all is said and done, I'll definitely be posting an instructable on this.

Topic by fortneja 11 years ago  |  last reply 9 years ago


how are the pins on a ic numbered?

I have been trying to make cylon light bar thing. http://www.evilmadscientist.com/article.php/CylonOLantern but it isn't working, all the wires an connections are done according to what is said and i asked my neighbour to have a look he is a electrician and he was surprised it didn't go as well. its the NE555  i put it togther. looking down on the plastic.     ______ 1-| o  U    |-8 2-|            |-7 3-|            |-6 4-|_____|-5 was that the wrong way? i have seen other circuit diagrams and the pin numbers where not like that. thank you oh and also is some solder non-conductive? and can you burn wires and make them useless? i don't think i could have fried the chip i getting pro at quick soldering.

Question by Scotty3000 8 years ago  |  last reply 8 years ago


I need help creating a telephone network!

Hey! I was wondering if there's any clever people out there who can help me with my ambitious project. I'm doing some creative direction for an event and aim to create a telephone network within the venue. I want to put phones on tables and use the table numbers as the phone numbers... I also would like a way of recording everything thats said over the course of the night through the telephones? I have a very basic understanding of how these things work, I've made circuits before- but i am an artist, not an electrician so please be kind and explain to me like you would a child! I've got my hands on a load of old phones, so I just need to rewire them I guess?  Thanks!

Topic by kittyjrt 6 years ago  |  last reply 6 years ago


FIRST Robotics Competition

Has anyone heard of the FIRST Robotics Competition? It was started by Dean Kamen. Instead of me repeating what their philosophy is, check out their website: FIRSTI'm on the first team from Nebraska, and this was our rookie year. We just finished up our regional competition in Kansas City, MO, and it was a blast. It is one of the only programs that I have found that encourages involvement in science and technology. The build process is almost similar to an engineering internship.If you happen to be in high school (or not yet there) or you are a professional engineer, electrician, programmer, or hobbyist (basically anyone who uses Instructables!), I strongly encourage you to get involved. Find a team in your area and contact them. There are over 2000 teams in the country, so there may be one near you.If you are already involved, let me know! I am interested in hearing what people have to say.

Topic by intoon 12 years ago  |  last reply 8 years ago


How do I bend elect. conduit?

I have a 5" radius 1/2" emt bender and 100' of 1/2" emt. I need to make three bends in each piece, 1- 90 degree in the middle and 1-45 degree bend on each side of the 90. Here's my problem: I need the "legs" (sides - picture a doghouse with a 90 deg peak and straight up and down sides) to be exactly 27" apart INSIDE measurement. Now, where do I make my marks on the pipe and what direction do I bend (facing the 90 or facing away from the 90)? I need these measurements to be precise so I can make all ten pieces of pipe the same. How 'bout you Journeyman Electricians? Anybody. Any help will be greatly appreciated.

Question by Jusme_Newby 10 years ago  |  last reply 7 years ago


External smartphone Monitor using old laptop LCD display.

  Hi there, I am currently working on a project on reverse engineering. I wish to attempt at somehow using an old laptop lcd, as an external display for my smartphone. As an amateur electrician and computer programmer I would love it if someone could direct me and tell me which goals I have to accomplish to make that happen. I understand that the signals coming out of an lcd display are different then on a cell phone so I had found a control board that will transpose the signal into a VGA signal which can then be directed to a computer. But is there a way to send the signal to a usb port for a smartphone to plug into. Granted a program, software and drivers for the monitor ets would need to be created but that aside, could something like that be possible? Please indulge me. Thanks for your time.

Question by Ahakimi2012 7 years ago  |  last reply 2 years ago


How do I create a phone network?

Hey! I was wondering if there's any clever people out there who can help me with my ambitious project. I'm doing some creative direction for an event and aim to create a telephone network within the venue. I want to put phones on tables and use the table numbers as the phone numbers... I also would like a way of recording everything thats said over the course of the night through the telephones? I have a very basic understanding of how these things work, I've made circuits before- but i am an artist, not an electrician so please be kind and explain to me like you would a child! I've got my hands on a load of old phones, so I just need to rewire them I guess? Thanks!

Question by kittyjrt 6 years ago  |  last reply 6 years ago


Rewiring my house to reduce electricity consumption

I am getting ready to rewire my house and want to do so in such a manner that a motion detector or timer shuts down most of the outlets in a room so that the phantom use of electricity or the abuse of same by teens is reduced (I am being realistic here). The Electrician thinks I am short a few bricks of a load so to speak. Lights he understands, plug load nada. I've seen something similar done in Europe when traveling where your hotel room powered down when you weren't in it and powered up with your key card in the slot when you were in it. I want to shut off all the power in the room when it is empty during periods of sleep except for one outlet which would power the clock/lamp and of course fire alarms. Help me out here.

Topic by crickenwood 10 years ago  |  last reply 10 years ago


Playing with mains electricity

I'm of the belief that most of us have played, in some form or another, with mains electricity. Whether it be fixing the power cord we accidentally cut in two, or juicing up a computer psu... So. I'm wondering if any of you have an electrician's licence. Reason I'm asking is that in Australia, doing anything with mains power requires one. Playing with power sockets, power plugs or cords, installing lights etc. Firstly, do you have this problem in the US? I've seen a few projects which involve light fittings and licence-requiring activities, and I have to wonder whether you're all licenced to do this sort of thing, or whether you're all licenced. And just thinking that there could be a potential loophole in the regulations... If you hooked up two ac transformers to step down the step back up, so you're where you started, technically, you're not running off mains power... if you get my drift. anyway. you all ignore this little aspect of the law or what? cheers

Topic by infiniteregress 12 years ago  |  last reply 12 years ago


moved into an old house, desktop computers won't boot?

So here's the deal. I moved into an old house that has copper wire with no ground on the boxes. My girlfriend's laptop seems to run fine but my two desktops won't boot. The newer computer will come on then power down then come on again and then just sit. My older computer (some 7 years old) tries to do a POST then stops and starts beeping constantly. I looked up the issue and it said that there was an problem with either the power supply or the power coming into the PSU. I just moved into the house and this started so I'm sure that there is nothing wrong with the PSU in my PC. I thought that maybe there was noise in the system so I bought  UPS and put it between the computer and the wall and still the same issue. Has anyone else had this problem? cause I'm at a loss. I asked my landlords for help and to get the place rewired and they said they weren't willing to do that or even pay for the electrician.

Question by SeRiAl_H 8 years ago  |  last reply 8 years ago


Can a normally open on/off pushbutton switch close without the button being pushed?

Hi all,I'm not an electrician, now it's said.I'm building a device containing a small on/off (latching) switch. When the switch is pushed, the device is activated and remains active until the batteries run out. The device will only be activated once, and afterward it's discarded. This means that the switch will only be pressed once in its lifetime.The use of the switch is to press the button to make the spring drive the contact point to rotate and close the circuit.The device must not be unintededly activated as it could have severe consequences. The button is protected to prevent from this, but I need to know the probability that the switch itself closes, due to a failure.The manufacturer (Chinese) just tells me "don't worry" so I need a second opinion. Is there a way to estimate the probability over a 3 year period? Because if there is a risk at all, I might need to add an extra switch to create a "double commando".Thanks for your help./Karolina

Question by karolina81 11 months ago  |  last reply 10 months ago


I am in Australia and I wish to wire in an exhaust fan to my fluro light operated by the one switch. Answered

The switch has a red wire and a white wire leading to the fluro light. The fluro has twin and earth (red, black and green) leading from a previous light in another room and another exiting to the next light in the house. The fan has two wires, a brown and a blue. I attempted to parallel the wiring by connecting the blue to red and brown to white. Once the fuse was turned on, the fan operated automatically and the light flickered without the switch being turned on. I reversed the wiring (brown to red and blue to white) with the same result. Logic failed me. Given that it is two wires on the fan (pos and neg I assume) I figure I am better parelleling to one of the twin and earths, but which one? Electricians charge a minimum of $240 per hour here, with a minimum of 1 hour charge, regardless of it being a 2 minute job. All connections are 240V. Wire joins will be completed using BP connectors.

Question by weekendDIYer 8 years ago  |  last reply 8 years ago


Building integrated led rear mountain bike lights?

Hi folks ,as said above , would like to install a row of red high-power leds into the rear of my bike seat  post to give a hidden , high-tech look  :-). Elements of design to be considered ;  to run off  2-4 AA batteries , to use 5-7  5mm leds , to use        " off the shelf parts " , no hand built electronics , to have constant and flash modes , would consider adapting an existing product ( e.g. cateye light unit ) For the installation i intend to drill a row of 5.5mm holes , 25mm apart , with the led heads sealed in place just protruding the surface of the metal post. The led leads would be drawn up and out of the top of the seat post into the saddle area and is where the battery pack would be strapped in. Any electronics could be housed inside seat post or under saddle. A handle bar switch would be nice but not essential. I feel confident about the wiring and fitting of the components ( electrician by trade ) just need a pointer with the electronics. Cheers Pete.

Question by biff55 9 years ago  |  last reply 9 years ago


Redirecting power to evade a power trip.

Summer days can be a bit too much in Southern California and my family uses a lot of electricity to keep the house cool. The problem is that one side of the breaker for the house is too heavy to handle all the appliances and electronics; because of it, the power trips a lot since people in my house apparently don't understand the whole "turn something off before you turn something on" concept. I considered running extension cords throughout the house but not only is it not practical but it can be a bit dangerous with the build up of friction from the ohms and what have you. I've been trying to think of ways to solve this issue and I was thinking maybe I could install a sensor switch or something of the sort that would not allow the use of certain appliances while others were on or maybe something that would turn something else off automatically in order for something else to be used. My biggest problem is I'm no graduate or electrician. I know a thing or two about the sort and am very capable of learning, I just need someone to point me in the right direction. I may not even be thinking in the right area which is why I'm posting. Any information would be greatly appreciated.

Topic by BnKSeth 6 years ago  |  last reply 6 years ago


Need some help with repurposing Christmas lights

Greetings everybody! I've been lurking around instructables for maaaaany years, but have never been a dedicated maker. On to the point. I made a "bedside lamp" so to speak. It's an olive branch, around which I put a row of christmas lights. They're the simple kind, white with a clicky green controller and about 10 different settings. The setting is remembered until the lights are unplugged, after which they reset. I'd like to keep them on at all times with just an on-off switch, because a twinkling bedside lamp is not of much use. My stepfather told me he'd help (he's an electrician) but we have no clue how the thing actually works (so we can take it apart and just keep the simple on-off cords. The setup is as follows: =)--------------(regular 2 cord electric current cable)----------[    *    ]----(5 cables)-----Y---Y---Y---Y Plug------------------------------------------------------------Single Button Controller---------Lights I've followed the cables as well as I could (I've already taped them around the branch at several spots) and lamps connect to different cables. How could I remove the "program" altogether and just make them work with a simple switch?

Topic by kouraf16 3 years ago  |  last reply 3 years ago


RGB LED Driver/Controller Help?

I officially feel inept.  As I am more of a wordsmith than electrician, this should come as no surprise to me.  Anyway, I have 6 RGB LEDs that I am embedding into a DIY background for my aquarium.  I bought RGB, LED strip lights which came with a controller/driver which I have installed in my canopy.  I thought it would be cool to place 5mm RGB lights encased in siliconed capsules in the caves and recesses of my background.  I have already wired and tested the LEDs underwater and all works as planned...individually.  To my question:  I have enough know how to complete the simple circuit with a cell battery, but I want to control the LED's, inexpensively, with some type of knob control (potentiometer??? I have many from an old classroom) so that I can "color-mix."  My research seemed to indicate arduino as my only option.  I'm not really interested in that.  So?  Any thoughts?  A schematic even a dummy like me can follow with six RGB LEDs?? Thanks for the help.  I will be posting the background build once I am through. Sincerely, Eric

Question by mretuck 7 years ago  |  last reply 7 years ago