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[Yucca]

Hi Jesus,

A small reed switch with resistor should work fine to supply the drive signal for the motor coil, just like a regular Bedini build.

But I plan on using a 5V logic line from a microcontroller (UC). The UC will have a hall effect sensor next to the rotor. By doing this I will have accurate control over the pulse timing and pulse width. Also the UC will be able to display the RPM, timing and width angles on a tiny screen.

I have included a week old photo of my pulsemotor build, it has progressed alot further since the photo, I am just finishing all the wiring. I will post you another photo here in a few days. You can see a reed switch at the top but I will be replacing with hall effect sensor for more accurate position signal.

I will probably try the BEMF recycler circuit in a week or so when I have the motor running with the UC. I have ran the motor just using the reed switch to pulse the coil but I´ve nearly killed my reed switch.

yucca.

[nievesoliveras]

Hi Jesus,

A small reed switch with resistor should work fine to supply the drive signal for the motor coil, just like a regular Bedini build.

But I plan on using a 5V logic line from a microcontroller (UC). The UC will have a hall effect sensor next to the rotor. By doing this I will have accurate control over the pulse timing and pulse width. Also the UC will be able to display the RPM, timing and width angles on a tiny screen.

I have included a week old photo of my pulsemotor build, it has progressed alot further since the photo, I am just finishing all the wiring. I will post you another photo here in a few days. You can see a reed switch at the top but I will be replacing with hall effect sensor for more accurate position signal.

I will probably try the BEMF recycler circuit in a week or so when I have the motor running with the UC. I have ran the motor just using the reed switch to pulse the coil but I´ve nearly killed my reed switch.

yucca.

That pulse motor looks great!
The coil seems built U-shaped. Is that correct?

About the switching. I think that the best one is the Bedini's original transistor trigger with the bifilar coil. But if you think that with a hall effect switch you will get better position accuracy, go for it.

Jesus

[Pirate88179]

@ Yucca:

Nice build there!  I'll bet that is going to work well for you.  Excellent job.

Bill

[nievesoliveras]

Hi! @pirate

@all

I made a secondary coil on a JT toroid, with a coil cable from a discarded phone charger.
I tried it first alone and tried to get some output reading, but there was none dc or ac.
I connected it to the pulse motor and with a charged 1.5v battery it run the motor.
When I connect a red LED to the circuit, the LED lights. Not too bright though.

The Idea is to connect the secondary through a rectifier to the source battery to see if it gives any feedback to the source.

I need to add some terminals to the secondary thin wires in order to connect it to the breadboard.
I have noted that each time it is harder for me to do any tests.

Jesus

[Yucca]

Hi Jesus and Bill,

Thanks, I´m enjoying building this. A half hour here an hour there.

The peculiar coil is the idea of a user called @woopy called the DEK UCC. DEK is the name of his pet dog and UCC stands for U shaped Coreless Coil.

A normal coil produces a field like this:
N S

The UCC produces a field like this:
N S S N

UCC Thread:
http://www.overunity.com/index.php?topic=6727.0

I want good positional accuracy because I want to fire the coil with a very short high power pulse just
as the magnet goes through the centre of the UCC coil. But I agree the bedini bifilar is a very elegant and efficient method. One coil that I will definitely be winding for my motor sometime.