Recent content by pie man

i actually changed the power source to a power cord that i stripped at the end so i did not have to wait for the battery to keep recharging. the cords output is 12v 1833 mA

i don't know if you are still even checking this thread because it is so old but i hope i can answer some of your questions. yes a electromagnet can repel a permanent magnet, just like a they repel each other if you match the south pole to the south pole or the north to the north they will...

hey i just made a U shaped magnet for my expirement and just to see if it worked i tried wiring it all the way around the U instead of just the legs and it made an interesting electromagnet. it for some reason was pulsing like the electromagnet would turn on off on off on off in about a second...

i think i know exactly what you mean now i found this website that explains a ton in lamens terms if anyone else has questions about this type of thing refer them to this site please http://sci-toys.com/scitoys/scitoys/magnets/calculating/calculating.html" so i think i know what you mean...

well you wanted an outline of my project and here it is so far I've been testing different variables and how much of a difference they make i have tested different gauges of magnet wire to use found out smaller the gauge the stronger. then a electrical engineer friend of mine suggested...

well as for what size of materiels i need at the moment I'm trying to figure out what material is best for the core i already have a steel rod 6 inches long 3/4 inch diameter and i wanted to try iron but google has just been sending me in goose chases on finding a place that would sell an iron...

thank you for your links they were helpful and i see what you mean that you don't just want to give me the answers. i'm guessing your probably an expert in electrical engineering and have done a lot of projects like this so i was wondering do you know of any sources for me to get some cores for...

i've seen those equation but like i said only 9th grade i could'nt even begin to explain or even understand the equations but please i joined this sight to get my questions answered and your kinda just asking me questions

good point and yes I've been to wikipedia and howstuffworks even tho how stuff works was not as helpful as on most subjects and I've done a good deal of research but the only help google had was when it gave me links to here so that's why i thought i would start my own thread asking the specific...

sorry you see berkeman I'm just a ninth grader that wanted to get some help on my project i am probably not the most reliable source of info to be asking questions to

hi i I'm doing a science fair project on how to make electromagnets stronger and i was wondering if you guys could answer some questions. first of all i need to find a good place to buy an iron core preferebly not online, i live in sandy utah in the united states. second i was wondering if you...