DEK motor with U-coreless coil or Lenz boxing against Lentz

[broli]

Is there a different between lenz and lentz? as spelled in the title?

Looking for a clarification.

No it's just a typo.

[Yucca]

OK, I've finished my pulsemotor testbed with UCC coil and done some rough programming just to get it running.

The strobe light system works well after putting black and white tape indicators over the magnets. The green sector is the delay between reed switch signal and coil firing. The red sector is the short width pulse into the coil.

I can adjust the delay and the width using a small joystick switch next to the screen.

The motor runs at 1000rpm using about 10mA at 9V.

Now I have to build the BEMF recycling circuit and also program it better so that the timing is relative to the RPM rather than just static delays.

[nievesoliveras]

@yucca

Nice work!

where did you get that electronic board?

Jesus

[Yucca]

@yucca

Nice work!

where did you get that electronic board?

Jesus

Hi, Thanks Jesus,

The brown board is a cheapo prototyping board as you probably know, I presume you're asking about the blue board: It's a freeduino microcontroller board. You buy them cheaply and you get free programming tools for windows. You just need a USB cable like a printer cable, nothing else to buy. Stacked on top is a nokia LCD screen, again cheaply available.

You program it up using C language.  I will be developing the pulsemotor program so that the user can specify all aspects of timing in tenths of degrees, so 3600 steps per revolution accuracy.

I chose this route because I thought when you're hunting for magnetic anomolies it's good to have reproducible conditions for different coil and mag setups and also good to have an accurate RPM meter. When I evaluate the running I ignore the current draw of the controller unit which is about 110ma at 9V. I just look at the current draw of the coil driver circuit (on the brown board). I'm hoping I might be able to make this current be negative with much more experimenting using Thanes (@crankypants) Perepetia effect.

If you or anyone else wanted to get a controller unit and you dont know C language (yet) then I could give you the pulse motor program via PM and then you just need to click your mouse to program it up. It's a very handy system for researching pulse motors of different configurations.

you can buy the controller and screen board from a UK company here, they have fast and reasonable international shipping:

micro board:

http://www.nuelectronics.com/estore/index.php?main_page=product_info&cPath=1&products_id=1&zenid=4acea1063d04071e9cf1c8785ccdf53f

screen board:

http://www.nuelectronics.com/estore/index.php?main_page=product_info&cPath=1&products_id=10

Yucca.

[Yucca]

@Woopy,

I've been thinking about your questions about the UCC. In my mind I don't think in standard drive mode (ala Bedini) the UCC can go overunity in a pulsemotor any easier than a regular solenoid coil. But what attracts me to the UCC is the fact that it is a two phase coil. It has N S S N polarisation as you travel through it. And so I think that maybe on one phase we can apply drive and on the other phase we can short the coil like Thanes perepetia and then maybe coupled with BEMF collection we could go OU. In such a mode of operation the coil would probably start cooling down, a powerful OU motor running on this principle would probably be covered in frost. I have to say though that without a core we won't get enough torque to run a prop. I am thinking that maybe a core could be made for it though, it would be two seperate saddles that U around each circular segment. How this could be manufactured at home I don't know, maybe epoxy loaded with iron powder?