Bedini SG

[Aaron]

cap and relay in parallel

Sephiroth,

Have you tried putting a small uf cap in parallel to your relay choke?

Anyway, do you have other systems to experiment with? Since you do get an increase in rpm with your choke, I think it is important to preserve that model. Would love to see others get higher rpm too... Lee didn't but maybe his choke had too many winds for his setup.

Aaron

[Chip Shorter]

theinventor- the reed switch I would use is something that can handle the voltage and current. It will arc and turn black and eventually burn out. So the bigger the better. I have had luck with the glass 25mm ones check supply houses for these things as they turn up often for real cheap.

[Aaron]

cap and coil in parallel

Sephiroth, a cap in parallel with the inductor will probably just make it oscillate. Never mind

[Sephiroth]

Aaron - I'll give it a go just to see what happens

my new batteries arrived today so looking forward to seeing how they respond!

Ren - How exactly have you hooked the cap to your circuit? Do you mean it is in parralell with the primary battery?

[theremart]

just a little something I found interesting guys. I put a small uf rated cap between the base and the positive of the run battery and the amp draw dropped. Interestingly enough the voltage on the cap is higher than the battery??

I have been putting a cap on the primary battery for some time, it seems to help smooth out the sudden draws.

Something I see very interesting to me, is I have seen someone put a bridge rectifier on the charging side... Still trying to figure out the advantages of that.

[Sephiroth]

I have seen bridges on recovery coils like in the original bedini monopole... I can't imagine how a bridge would be work with the charging battery on the base of the primary coil like on the ssg... was that in Pwordchernoir's schematic? I noticed his is a bit different but haven't had a chance to study his schematic.


New user on youtube has an interesting modified motor...

YouTube - theDaftman's Channel

he believes the technique of charging the ssg using "back emf" is a "con". He is using recovery coils instead and says the motor has been running for months without draining the batteries. Not sure what is happening in his circuit but it looks like it would step up the voltage to 48v from 12v before it reaches his charging battery. Of course there will be other "effects" going on with the sharp pulsing from the reed switches

[Chip Shorter]

Don't know what he means by a con though I suspect its slang for things not being what they seem. I have always understood a certain time componet involved with the magnetic field from the inductor collapsing back into voltage. Its all the quantity of the pulse but it is shortened by advanced circuitry. Also his use of reeds allows a timing element to be employed into the motor design to allow for advancing and retarding to then gain speed. We should see if we can get Daftman to join this board. Sometimes another perspective leads to new things. A quick note about reeds. There is a time element that has to be respected when using reeds as there is hysteresis ie there not as fast as a transistor. Also you can capture the radiant event itself off the reed if your clever as it does bounce around a magnet. As far as advancing motor timing for speed I suppose one could make a seperate trigger coil to fire the transistor at a little cost to motor speed. I have not tried this yet.

[gmeat]

Thx Sep

Hi Sep,

Thx for the link , I found it to be very informative.I like the way this guy thinks .


-Gary

[ren]

mechanical switching will always be superior to ss switching when designed properly imo. The problem arises with longevity. I was reading a Tesla patent the other day where he states the use of mercury as a conducting fluid to break motor pulses.


@ Sep. I place a small uf (10-80uf) cap with the negative to the base of the master and the positive to the positive of the run battery. You get various effects by placing it on the Emitter too, but above was the only way the voltage read above the battery. Good idea to have a small fuse in the negative leg as well. My amp panel has a 500ma fuse I blew when I tried a cap that was too big. Rather that than the transistors. YOu may have to back off your resistance. Could be interesting with the relay coil in there too.

[Jan H]

Ren,

The mercury you mentioned gave me an idea... these switches exist in room thermostats, they are normally gravity operated, but would it be possible to trigger those with magnets?


This could in theory do the job, but it is still a liquid and i think it will act a little unpredictable.

[theremart]

Sephiroth adding choke to the circuit.

ok guys...

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
rotor magnets at all... that seems like a good thing, no?

I tried this today on my SSG with generator. Cut my amps in 1/2 rotation the same, output of my generator is 11.5 V at with an input of 12V at .5 amp

Aaron, thank you also for telling me what a choke is

WOOW Thanks a MILLION

[Sephiroth]

woohoo! Finally an optimistic result! Well done Mart!



also rather suprising since our ssgs are pretty different... I wonder what the link is because most people are reporting either a drop in rpm or no effect at all

are you using the same relay?

[Aaron]

choke trigger results

Very cool Mart!

How did you measure rpm?
Is the 0.5 amps after the choke so it used to draw 1 amp?

Do you have a scope to show a before/after shots?

Any difference in ability to charge batts?

[Aaron]

mercury switch

I used a mercury switch a long time ago on the "dual battery charger" with the trifilar charging a cap bank. I set the pulley with a copper contact that came around and flicked the switch to get the mercury to make contact between the leads...that discharged the cap bank. It worked but not sure how it really did compare to copper contact switch.

[ren]

Interesting Jan and Aaron. Better start collecting old thermometers and thermostats hey

Good work on confirmation of results Mart! I think I'll have to go and buy some relays