Recent content by Romodoc

Ok, this may be a very stupid question but I just can't find a right explanation. I was reading about how a battery works (i.e. car or AA battery etc) and I found several videos giving the following explanation. (e-) are concentrated on one pole and a positively charged material is in the...

Thank you for your advice. What can I use as a former? Can I get the custom made for the dimentions I need? Any tutorial you may point me to?

Hi guys, I am building an electromagnet to use mainly for its reaching properties. I want to have a large air gap. I don't care if the magnet can only lift a paper clip but I do care if it can move it from a 15 to 20 cm distance or more. I only have 1 core to work with so my choices are only...