Added: 3 years ago
From: eebeh
Views: 3,258
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  • I like this. Is this a straight up electromagnet or are you pulsing the coil to energize when the magnet falls?

  • @AlienNRG It looks to me like the circuit includes some type of switch on the wheel on the top of the machine. This makes it quite a nice demonstration of an old type of electric motor.

    There is a cute type of motor that requires no contactor but runs on AC power. If the coil is made to resonate at the AC frequency when the plunger is out by mean off a series capacitor, the field will build up each time the plunger is withdrawn. It tends not to be an efficient motor but interesting.

  • How about wave action generator. A tethered bell is moved up and down like an airfoil(wing). They cost a lot but we could make small ones. They work FAR better than windmills on barges!

  • Since the wind is basically free, it comes down to a question of dollars per Watt.

    A fairly simple vertical shaft wind turbine, may be the best on the dollars per watt. It has the advantage of not needing extra machinery to point it into the wind.

  • @knowledgemonger As long as the wind is blowing of course.

  • @recbo Wave motion based generators have yet to be made practical. They take far too much material for the amount of power they generate and they have the problem that the strength of the waves vary widely. You have to design strong enough for the largest wave which is very many times more than the average. This makes the cost per average KW very high.

  • Back in the early days of electric motors ones of this type were made. They don't make much power per pound of motor.

    There is a different version that you can make that is more interesting. It uses the same crank etc. The piston is transformer laminations. You series resonate the coil with a capacitor on perhaps 6V AC. The capacitor has to be tuned to get resonance with the piston fully out of the coil. No contacts are required. Just the piston taking the coil in and out of resonance.

  • Excellent! Keep up the great work.

    Proof on concept yet again.

    +1 for the youtube builders network.

    -1 for the nay-sayers.

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