 | | Controlling an Electromagnet (LSM) —Iain Hendry
| | | | Hi all, It's been a while! A long while ago, while in elementary school, I used LEGO to build a manually-operated Linear Synchronous Motor (LSM) for a science fair project. I want to revisit this as an adult and built a full test track with a couple (...) (13 years ago, 24-Dec-11, to lugnet.robotics.rcx)
| | | | | | | | | | Re: Controlling an Electromagnet (LSM) —Kevin Karplus
| | | | | Iain, How much power do you want for the electromagnets, and how rapidly do you need to switch them on and off? Old-fashioned relays will give you the least power loss, but can't be switched very quickly. They also have a limited life (between 10 (...) (13 years ago, 24-Dec-11, to lugnet.robotics.rcx)
| | | | | | | | | | | | Re: Controlling an Electromagnet (LSM) —Brian Davis
| | | | | (...) Or... avoid both stock relays and chip-based switching. For a linear motor you want to trigger each electromagnet in a series, you ideally you might like a "push-pull" system, where you aren't just turning a magnet on and off, but reversing (...) (13 years ago, 31-Dec-11, to lugnet.robotics.rcx)
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