|MadSci Network: Engineering|
I am working on my final term project and i am interested in the possibility of creating a economical and efficient method of physically opening and closing a small lightweight flap. It would be a relatively easy to use a small toy motor and a series of gears - however, i worry about the long term use and possible breakdown of this type of switch. overtime. As a result, I wanted to look into the possibility of using magnets to open (through the use of repulsive forces) and close (through attractive forces) of this lightweight flap. My question is multi-faceted: 1)would the current needed to reverse the polarity of the magnets be less than that used to power a small toy motor? 2)How do I calculate the energy needed to create the required force? (which i understand would be a factor based on the object i was trying to move) 3) how long does the current have to be running through the magnet to change its polarity? 4) Which type of magnets are suitable for this use? thank you kindly in advance. I look forward to hearing from one of your scientists. This is a great service, and I have enjoyed reading the questions and answers relevant to my questions. Best regards, Emmet
Re: Is it possbile to make a compact magnetic switch?
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