• Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Burned my carpet

Status
Not open for further replies.

Gene

New Member
Wow! Hope you are OK. The green stuff is usually laquer or enamel paint and it must have gotten pretty hot to catch fire. Perhaps your physics teacher could have suggested you check the resistance of the coil and the applied voltage to see if the wire size could handle the resulting current.
 

daviddoria

New Member
haha i don't know if i really needed instruction to do that.... prolly shoulda thought of that on my own...

haha

it seemed like a pretty big coil to me.. i've included some pics now.. how big of a load are we talking to stop it from burning?
 

kinjalgp

Active Member
The coil seems to be small for high voltages. Have you measured its resistance?
 

Sebi

Active Member
If You tryed to built an electromagnet - as i see the picture - don't connect it higher voltage as 6...8V.
 

TheWongs

New Member
Looks pretty fried to me! :lol:

Try half the thickness of wire and triple the amount of turns... At least! Would it be easier to use a coil from something else I.E. a solinoid or relay? These coils have very thin wire and LOTS of turns. It is very difficult to make a coil like that without a coil winding machine.

Good luck!
 

daviddoria

New Member
hmmm so maybe i should just go buy a solenoid?

what is this talk of only 8v?? i would like to run his off AC as to get alot of current (and also not kill batteries). so are you recommending some sort of voltage limiting thing? or to use batteries?
 

Gene

New Member
David - What are you trying to do? It sounds like you are attaching the 110 volts AC from your house mains to different things. Please be careful.

If I wanted an electromagnet that would run on 110 volts AC, I would buy a 110 voly relay and remove the coil. I know it has the proper amount of wire to handle the voltage.
 

Gene

New Member
No claims about my mind but I always enjoy David's posts. He is constantly trying new things - I wish I had his energy.
 

daviddoria

New Member
McGuinn said:
I suspect somthing untoward here.
What A/C are you using? Mains by any chance???
just a normal wall outlet...
i think i am going to end up having to get a solenoid so its already coiled... i found something that said 30 AWG wire is only like .1 ohms/foot

that seems like i'd need a lot of feet..... lol

i'll let you know when i find something that will fit the roll of this coil

david
 

bogdanfirst

New Member
so you want a coil gun....
it generates a great magnetic field and throws something ....interesting...
ok, back to resistivity, for copper it is rCu=1.6E-8 ohm x m
so the resistance for a coper wire is.....R=rCu x lenght/surface
where surface is in square meters and lenght is in meters...
alsol, but this is not verified info, a wire is said to hold 4A/square mm....not sue about this
 
Status
Not open for further replies.

Latest threads

EE World Online Articles

Loading
Top