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View Full Version : Some Basic Bedini SSG Questions.


Zooty
10-26-2009, 04:44 PM
Hi all, i have built a bedini ssg setup that seems to work as predicted but i have a few questions.

1. Assuming all magnets around the wheel are North facing out, should the coil core facing the magnets produce a north magnetic field?

2. The coil is triggered AFTER the magnet passes the core. With a compass i can see the invisible south pole in between the magnets. Does this not mean the coil would need to produce a south magnetic field to push the wheel?

3. Does the coil produce a magnetic field during the field collapse when passing the signal in to a charging battery or other load?

Thanks.

dambit
10-26-2009, 05:27 PM
Hi all, i have built a bedini ssg setup that seems to work as predicted but i have a few questions.

1. Assuming all magnets around the wheel are North facing out, should the coil core facing the magnets produce a north magnetic field?

2. The coil is triggered AFTER the magnet passes the core. With a compass i can see the invisible south pole in between the magnets. Does this not mean the coil would need to produce a south magnetic field to push the wheel?

3. Does the coil produce a magnetic field during the field collapse when passing the signal in to a charging battery or other load?

Thanks.


Hi Zooty,

The answer to Q 1 is yes.

The transistor fires a split second after the magnet has passed the core of the coil producing a north pole at the top of the coil. This not only repels the north magnet but attracts the scalar south at the same time. By the time the next magnet is in range the coils field has collapsed and therefore does not repel it.

My answer for Q3 is no, but I am sure some others may have their own thories about that.

Hope this helps,

Cheers,:cheers:

Steve

Sephiroth
10-26-2009, 05:42 PM
1. Assuming all magnets around the wheel are North facing out, should the coil core facing the magnets produce a north magnetic field?

Yes, just after TDC the coil will activate and generate a north pole on the side of the coil facing the magnets which counters the attraction to the core.

2. The coil is triggered AFTER the magnet passes the core. With a compass i can see the invisible south pole in between the magnets. Does this not mean the coil would need to produce a south magnetic field to push the wheel?

The north pole on the coil repels the real north on the magnets AND attracts the scalar south :)

3. Does the coil produce a magnetic field during the field collapse when passing the signal in to a charging battery or other load?

It doesn't produce a magnetic field. The magnetic field is created as the coil in energised. However, as long as there is current flowing through the coil there will be a magnetic field.

If the load battery is disconnected (and assuming there is no neon, or any other path for the current to flow) the magnetic field will completely collapse almost instantaneously. Though if the charging battery is connected, or if you just short out the coil with the diode, the current generated by the collapsing field actually sustains the magnetic field long after the power to the coil has been removed and slows down the rate of collapse. This remaining magnetic field can be used to perform additional work.

Looks like Dambit might not agree with me :) But I can prove it :thumbsup:

Two Stage Inductance : The Underground Lab (http://www.theundergroundlab.org/index.php?main_page=index&cPath=1_7_18)

Zooty
10-26-2009, 06:43 PM
Thanks guys, that has cleared up some misunderstanding as to what is going on. I am in the process of trying something similar to what Rick Frederick done with his self runner setup and results are promising. I have a separate coil connected to the ac side of a bridge rectifier with a break on one side of the coil going to the rectifier (open circuit) and the DC side connected to a cap. When i close the switch on the ac side just after the magnet passes (during the field collapse), the cap gains charge with no noticable drag on the wheel. This circuit unlike Ricks is not connected to the ssg circuit. The coil does not have many winds at the moment and the magnets are the same ones on the wheel so not very strong.. im thinking of getting much stronger magnets on a second wheel on the same shaft with more coils in series.. Has anyone tried this?

Sephiroth
10-26-2009, 06:53 PM
Has anyone tried this?

I'm experimenting with that kind of set up as we speak with the MG-1 :thumbsup:

YouTube - introvertebrate's Channel (http://www.youtube.com/user/introvertebrate)

Nothing exciting to report yet, still in the early stages... but I've nearly finished the MG-2 :rofl:

Zooty
10-26-2009, 07:07 PM
One things for sure, there is definitely something there, put your fingers across the AC side of the rectifier as the switch closes (DONT).. it hurts and this is from a circuit not connected to the ssg. It also lights a neon nicely.

ren
10-26-2009, 08:48 PM
Zooty IMO this is what people should have been doing all along.

Im glad to see someone else trying it out. I have a build in the works that is geared towards this. You have that big magneto spinning there why not exploit it?

@ Sep, I will post a video soon of a timing light I have thrown together. Its very similar to the one in your video, but x 48 LED's. Throws off alot of light. Its a beautiful thing to watch start up with the LED module pointed at the rotor in a completely dark room. The LEDs are paralleled to the drive coil so they only come on when the circuit fires. You are left with an image of the wheel only when the light is on, so the wheel looks like it is stationary, just off TDC.

The light and reflection of the magnets change as your pulses per pass drop. You can almost count how many pulses per pass there are by looking at the magnets. Kinda like a real poor mans oscilliscope.

Regards

Sephiroth
10-26-2009, 09:25 PM
Zooty IMO this is what people should have been doing all along.

Im glad to see someone else trying it out. I have a build in the works that is geared towards this. You have that big magneto spinning there why not exploit it?

@ Sep, I will post a video soon of a timing light I have thrown together. Its very similar to the one in your video, but x 48 LED's. Throws off alot of light. Its a beautiful thing to watch start up with the LED module pointed at the rotor in a completely dark room. The LEDs are paralleled to the drive coil so they only come on when the circuit fires. You are left with an image of the wheel only when the light is on, so the wheel looks like it is stationary, just off TDC.

The light and reflection of the magnets change as your pulses per pass drop. You can almost count how many pulses per pass there are by looking at the magnets. Kinda like a real poor mans oscilliscope.

Regards

sounds beautiful! Look forward to seeing it!

dambit
10-26-2009, 11:53 PM
[b]3. Does the coil produce a magnetic field during the field collapse when passing the signal in to a charging battery or other load?

It doesn't produce a magnetic field. The magnetic field is created as the coil in energised. However, as long as there is current flowing through the coil there will be a magnetic field.

If the load battery is disconnected (and assuming there is no neon, or any other path for the current to flow) the magnetic field will completely collapse almost instantaneously. Though if the charging battery is connected, or if you just short out the coil with the diode, the current generated by the collapsing field actually sustains the magnetic field long after the power to the coil has been removed and slows down the rate of collapse. This remaining magnetic field can be used to perform additional work.

Looks like Dambit might not agree with me :) But I can prove it :thumbsup:

Two Stage Inductance : The Underground Lab (http://www.theundergroundlab.org/index.php?main_page=index&cPath=1_7_18)


Hi Seph,

I totaly agree with your statement. :) I was just saying that a field is not created as the first collapses. It can be sustained though.

Cheers,

Steve