Bedini SG

[Sephiroth]

hmmm... I can't quite get my head around what is being said....

when he says it delays the pulse, does he mean it simply moves the pulse, say, 5 milliseconds later...

or

it cuts off the front end of the pulse...

I don't really understand...

then again, perhaps I'm making it over complicated! So it's simply reducing the length or the pulse?

I'm going to have to get a scope!

[Aaron]

Lee's trigger on choke result

Here is a post from Lee:

" Hello Aaron and All,

I did some testing with an inductor in the trigger circuit, although
this was not extensive. The inductor effectively delays the point at
which the base of the transistor receives enough voltage to begin
conducting. Without the inductor in the trigger circuit, the point at
which the base begins to conduct is dictated by speed and strength of
the passing rotor magnet. The physical geometry, gauge of wire and
number of turns in the coil. Also, the quantity of welding rod that
makes up the core of the coil. Increasing and reducing base resistance
has little effect on this point of base conduction but with an
inductor in the trigger circuit combined with base resistance, the
point at which the base conducts can be delayed, effectively reducing
pulse width and therefore, current draw.

All The best Lee…"

[Sephiroth]

I'm getting pretty good charging results though doesn't appear to be over COP 1 yet... I really need better batteries to do a fair test. at the moment I am using the recovered wheel chair batteries but they are not up to their full capacity yet so I've bit the bullet and bought 4 new 24ah batteries online which should be here in the next week or two.

Then the real fun begins! There are a few other variations I'm trying but I need 4 batteries of equal value so looking forward to those!

[Sephiroth]

I don't think the direction of the winding is signifcant. I have taken the relay out and put it back in so many times that i'm sure it performing the same (or at least very similarly) in both directions... there is no noticable difference.

Looking forward to hearing your friend's results Aaron! would also love to see a scope shot if anybody gets similar results!

Ren - I would like to try and take out the resistors all together and just use chokes but at the moment I can't get the right value...I only have 2 of these coils and if I put them both in series I can't get the reistance low enough to get to a sweet spot... I might try taking half the windings off one of the coils...

[Aaron]

shorter duty cycle

Hi Ren,

My original thought is that it caused a quicker duty cycle. Someone else did this test and if they don't mind, I'll post their result.

I asked about the winding direction actually for someone else.

I also wonder about the charging. If in the shorter duty cycle the coil is able to be charged just as full, then the spike coming back should be the same.

The geometry between the magnets should be considered as to where this choke allows the on pulse to happen and if that is beneficial or not.

But with 30% drop in current with higher rpm, I think it looks really, really good so far.

[ren]

Good work Sep! I think that you have found another way to restrict the current/voltage in the trigger coil allowing for a faster on off time. I would be interested to see if it affects your charging rate positively. Interesting too that your potentiometer can only do so much before it goes into solid state or starts drawing more. This is similar to experimenting with a pick up coil as your trigger. Maybe start adding more relays??? Aaron my understanding is similar to yours. Current cannot flow through until the magnetic field has built up. This choking coil may be restricting current just long enough to reduce amp draw.

Well done

[Aaron]

choke on the trigger

Mart,

The relay coil is used in series with the trigger circuit.

Trigger wire ---> relay coil in series ---> resistor ---> base of transistor

A "choke" or any coil/inductor used like this builds a magnetic field when power goes through it. The magnetic field builds up and restricts current but still allows the voltage to get through. This is a very bare bones simplified understanding that might not do it justice but that is my basic understanding as I learned it from a different application.

I'm happy to see Sephiroth confirm with a tach that he did get higher RPM...just wondering what direction the turns of the relay coil are going in relation to the trigger wire.

[theremart]

RE findings

ok guys...

My Tach finally showed up so I can confirm the speeds and amps with and without the "choke" in the trigger circuit... just for the record I am using 6 magnets on an 8cm diameter rotor....
....
rotor magnets at all... that seems like a good thing, no?

Ok, you got me curious,
what is a choke, as it looks like it sure boosted your results. You are putting it in the trigger section right?

Glad you got a Tach, it sure helps to know fast faster, and BURNING Tires

[Aaron]

choke winding direction?

Sephiroth,

This is very promising!! Great work! What direction is the choke wound in relation to the trigger winding?

[Sephiroth]

ok guys...

My Tach finally showed up so I can confirm the speeds and amps with and without the "choke" in the trigger circuit... just for the record I am using 6 magnets on an 8cm diameter rotor....

without the choke, the best sweet spot I can get is drawing 410ma at 2600rpm
so pulsing at about 260 hertz

WITH the choke it is drawing 280ma at 2700rpm...
so pulsing at about 270 hertz

suprised that no one else has posted similar results

since rpm doesn't really mean anything when comparing one motor with another, does anyone else know what frequency their motors are pulsing at? I'm sure that's signifcant.


Aaron - As I said I couldn't get your version of the superpole to work (pretty sure my magnets need to be stronger) but I thought I could get similar results if I just made a standard monopole configuration but with the souths facing out instead of the norths....

getting pretty good results.... no noticable increase in charging the battereis but interesting performance of the motor...

with a normal north pole configuration my coils would vibrate alot if they weren't strapped in....

but with the south pole configuration they hardly vibrate at all... they don't even need to be strapped in... it's like the coils aren't interacting with the rotor magnets at all... that seems like a good thing, no?

[Aaron]

nice SG

Cool video! Looks pretty too!

[ray0energy]

hello people i just finished my hi speed test run

YouTube - Bedini SSG type motor new setup 1e hi speed test run

[theinventor]

Thanks for the response ren.

[ren]

Hi inventor.

The wire should be fine as long as it is copper and has a coating. Magnet wire comes in many different colours of coating but they all do the same thing. If you are ok with ebay theres a good source on their who can supply all awg ratings at pretty much any size/length. His handle is "sword and treasure", do a search for magnet wire and he'll pop up.

The neon you are after should be similar to this one. Wiltronics Research Pty Ltd

I would recommend building the monopole sg and studying it before moving onto more advanced models. The triac can be a number of variations, or replaced with scrs or even npns.

[theinventor]

clear enamel coated copper magnetic wire great price

Hello, I just found out from mcmaster.com that the enamel coated copper magnetic wire is clear, in other words its not red,brown,gold,ect...
Is it still okay to use in the SSG project for the coil?
they told me that that's the coil companies use for motors.

McMaster-Carr
(once there type in the search button magnetic wire)

Type Single-Conductor Wire and Cable
Single-Conductor Wire and Cable Type Magnet Wire
Number of Conductors 1
Conductor Type Solid
Conductor Material Enamel-Coated Copper
Lowest Temperature Range Not Rated
Highest Temperature Range Up to +400° F (+204.4° C)
Temperature Range Up to +392° F (Up to +200° C)
Specifications Met National Electrical Manufacturers Association (NEMA) and Underwriters Laboratories (UL)
NEMA Specification 1000 MW-35C and 1000 MW-73C
UL Specification UL Recognized

P.S.
Can anybody give me a model number and a company to buy the correct neon light? and I bought one 1kv 4a is this okay to use in bedini mono pole radiant mechanical oscillator? by the way does anybody know what product number or specs the 400v Triac this oscillator charger uses?

thanks for the help and if its too much I'm sorry.