Originally Posted by brodonh
Hi Faraday88,
It can be switched magnetically with no electronics.
One has to add an iron magnetic shorting bar and also, reverse the polarity of the magnet between the iron bars.
The rotor will be alternately attracted to the bars or repelled when the shorting bar closes and opens the magnetic circuit.
I just learned this while studying the posts in the old Yahoo window motor group.
John B discovered this by accident when an iron bar fell across the iron bars and shorted the magnetic circuit during frame assembly.
bro d
ONE HAS TO ADD AN IRON MAGNETIC SHORTING BAR
Refer to picture on the front page of the patent.
To add a magnetic shorting bar, take another piece of iron and lay it in a perpendicular manner across the iron poles, somewhere between the magnet on the left and the ends of the pole pieces where the rotor passes through.
This will short the magnetic circuit. No coils involved with this mag cct shorting.
Normally when a rotor magnet approaches the iron poles it will be attracted to the iron AND by the opposite mag poles.
When you lay the shorting bar across the iron poles the approaching magnet will not be attracted by the opposite poles but to the iron only, because the mag cct is shorted.
REVERSE THE POLARITY OF THE MAGNET (#21 in the patent pic) BETWEEN THE IRON BARS.
We also reverse the poles of the magnet on the left, in the picture, between the iron bars and then the approaching rotor magnet is repelled unless the shorting bar is across the iron bars.
With the shorting bar across the poles. the approaching rotor mag will be attrached to the iron.
When the moving rotor magnet is between the bars we lift the shorting bar and the rotor magnet is repelled.
John B suggested that we could find a method to place and lift the shorting bar as needed for motor action.
This is easy to see for your self by arranging mags and iron like the patent pic without a rotor and just approach the open end of the iron poles with a magnet that simulates an approaching rotor mag.
Enjoy,
bro d
Hi Faraday88,
It can be switched magnetically with no electronics.
One has to add an iron magnetic shorting bar and also, reverse the polarity of the magnet between the iron bars.
The rotor will be alternately attracted to the bars or repelled when the shorting bar closes and opens the magnetic circuit.
I just learned this while studying the posts in the old Yahoo window motor group.
John B discovered this by accident when an iron bar fell across the iron bars and shorted the magnetic circuit during frame assembly.
bro d
ONE HAS TO ADD AN IRON MAGNETIC SHORTING BAR
Refer to picture on the front page of the patent.
To add a magnetic shorting bar, take another piece of iron and lay it in a perpendicular manner across the iron poles, somewhere between the magnet on the left and the ends of the pole pieces where the rotor passes through.
This will short the magnetic circuit. No coils involved with this mag cct shorting.
Normally when a rotor magnet approaches the iron poles it will be attracted to the iron AND by the opposite mag poles.
When you lay the shorting bar across the iron poles the approaching magnet will not be attracted by the opposite poles but to the iron only, because the mag cct is shorted.
REVERSE THE POLARITY OF THE MAGNET (#21 in the patent pic) BETWEEN THE IRON BARS.
We also reverse the poles of the magnet on the left, in the picture, between the iron bars and then the approaching rotor magnet is repelled unless the shorting bar is across the iron bars.
With the shorting bar across the poles. the approaching rotor mag will be attrached to the iron.
When the moving rotor magnet is between the bars we lift the shorting bar and the rotor magnet is repelled.
John B suggested that we could find a method to place and lift the shorting bar as needed for motor action.
This is easy to see for your self by arranging mags and iron like the patent pic without a rotor and just approach the open end of the iron poles with a magnet that simulates an approaching rotor mag.
Enjoy,
bro d
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