Bedini SG

[Sephiroth]

good plan! will try that next time... fingers crossed it will survive long enough to at least cycle the batteries!

[theremart]

good plan! will try that next time... fingers crossed it will survive long enough to at least cycle the batteries!

I have a friend that has recommended adding 4 zener diodes in line of the charging battery this has protected the transistors from much harm.

1N4742A ZENER DIODE 12 VOLTS 1 WATT 5% (100 pcs) - (eBay item 130106167087 end time Dec-02-07 07:57:51 PST)

I weep with you man I HATE resoldering those transistors in.

Mart

[theremart]

At last real results from my ssg.

Well, I wanted to see if I could bring back from the dead some deep cell 12V batteries. I found I was just killing myself trying to bring Nicads back to life. Here are the results of attempting to bring two batteries ( Named Spark and Neon ) back to life.

Tested with inverter with 13W light bulb is pulling .58 Amps



Battery Profile Crown Part Volts Amps Reseve Capacity
24 24DC36 12 85 140*


Time Battery Name Number of minutes with 13W Battery

Charge

7:40 AM 11/28/2007 Spark 3 min
7:45 AM 11/28/2007 Neon 1 min

Charge

2:12 PM 11/28/2007 Spark 3 min
2:05 PM 11/28/2007 Neon 6 min

Charge

8:45 AM 11/29/2007 Spark 7.5 min
8:16 AM 11/29/2007 Neon 14 min


Charge

5:23 PM 11/29/2007 Spark 5 min
5:34 PM 11/29/2007 Neon 12 min


Charge

8:30 AM 11/30/2007 Spark 9 min
8:20 AM 11/30/2007 Neon 20 min

Charge * note went to ceramic magnets only. Switched over to full
12V powersupply for Neon.

Charge

8:58 AM 12/1/2007 Spark 12 min
9:28 AM 12/1/2007 Neon 26 min

Let the batteries rest a day.

Charge

6:28 PM 12/4/2007 Spark Unable to run inverter charge
was at 10.30
5:40 PM 12/4/2007 Neon 45 min

Charge

6:31 PM 12/5/2007 Spark Unable to run inverter charge
was at 10.30 Changed PWR supply
5:43 PM 12/5/2007 Neon 70 min

Charge

12:50 PM 12/6/2007 Spark 2 min
2:33 PM 12/6/2007 Neon 67 min

Charge

1:00 PM 12/8/2007 Spark 2 min
2:33 PM 12/6/2007 Neon 40 ?+ timer stopped

Charge ( taking Spark back bad cell ( black merk in cell )

9:13 PM 12/10/2007 Neon 12.36V 61 min

Charge

5:37 PM 12/12/2007 Neon 12.55V 2 hours 19 min

I was VERY happy tonight to see that Neon lasted so long. What surprizes me is the acid in the cells in Neon still test bad? But I guess I still have a long way to go before the sulfate on the cells returns back, I understand about 30 to forty recharges.

So, I am a believer that this will work to recharge batteries from the dead, I am getting 3 more cells, and hope to move on to golf cart batteries next.

Does anyone have a schematic for using more than one coil, or transistor? now have 4 ssgs, and I want to move up to the best way of charging these, and open to ideas. peace

[splocal]

Multi Coil schematic.

Does anyone have a schematic for using more than one coil, or transistor? now have 4 ssgs, and I want to move up to the best way of charging these, and open to ideas. peace [/QUOTE]

I haven't tested this schematic myself yet but looks like a good one, so here it is a multi coil multi transistor schematic.

[Sephiroth]

ah! so you do use a 1n4001 per transistor! luckily thats what i've been doing. lol cheers!

[ren]

splocal, look back at page two of this thread. Jetijs helped me out with this earlier. He drew a great diagram for us. Basically wire a second power winding/coil up to a second transistor exactly the same way as the original schematic. When it comes to the the triggering you use the original trigger winding to trigger the base of this transistor. Use the same resistance on each base and vary your 1k pot. If its a separate coil, it needs to be inline with a magnet when your master coils fires.

[theremart]

Does anyone have a schematic for using more than one coil, or transistor? now have 4 ssgs, and I want to move up to the best way of charging these, and open to ideas. peace

I haven't tested this schematic myself yet but looks like a good one, so here it is a multi coil multi transistor schematic.[/QUOTE]

ahhh at last! appears that I can just hook up my two SSG together with this schematic!

THANKS YOU ME HERO

[splocal]

Thanx ren im getting their!

splocal, look back at page two of this thread. Jetijs helped me out with this earlier. He drew a great diagram for us. Basically wire a second power winding/coil up to a second transistor exactly the same way as the original schematic. When it comes to the the triggering you use the original trigger winding to trigger the base of this transistor. Use the same resistance on each base and vary your 1k pot. If its a separate coil, it needs to be inline with a magnet when your master coils fires.

Thanx Ren! I haven't got to winding my second coil yet, but was planning on it soon, 3 kids and a wife keep me mighty busy! But just to make sure I understand, the same trigger for the master coil also triggers the slave coils. The coils have to be in line with the magnets which also need to be spaced evenly around the rotor. so When the coils fire they are both pushing a magnet away at the same time
Ok for my other question, when my coil begins to self oscillate it makes that high pitch whining noise. Now I know this is normal but what Iam curious about is why does it stop when I hook up a battery on the back end ( a charge batt) I have a 680ohm resistor between the trigger wire and the base, maybe thats to much for my setup. Originally I had a 1K pot and when turned all the way up the noise got louder and would eventually stop the rotor. I also have only 435 turns on my coil which is kinda low I would like to get 800 turns, im not sure how that would affect the self oscillations though. any tips would be appreciated!

[ren]

Aaron explains the changes a bit like putting a larger, high flow exhaust on a car. Changing pressure on the back end gives a source for our load to transfer to. That is how I see it anyway.

When you do your resistors wire the master transistor up and make sure it is firing. Then place the same fixed value resistor off to each slave transistor from the pot. In effect, you branch off after the pot in your circuit, making sure that the path to each base on all transistors goes through the same resistance.

For example, 100 ohms to each base and a 1k pot to tune. You might want put a higher resistance up when you figure out the sweet spot, Lets say 400 ohms and a smaller pot. (Just examples.) With a coil of your size I would try a smaller fixed value and have your tuneability set for a lower ohm band. Maybe try a 10 ohm 1 watt resistor and a smaller pot? You might get more speed this way so make sure your wheel is up to scratch.

If all coils are firing off the same trigger signal they will all be firing as a magnet passes over the master coil. If your wind is trifiliar or more then you wont have to worry, but if the slave winding is on another coil physically removed then it will fire in unison, hence alignment with a magnet at the same time is necessary.

[Jetijs]

Also I would suggest you to get a high wattage 1k wire wound pot for these experiments, because if you use an 1/4w pot and only one transistor, that will be fine, but if you add another transistor to the circuit, there will be twice the current flowing through the pot and a small one could fry. I fried several pots with only a two transistor circuit. Now I have a 20W wire wound pot and am using that on a six transistor setup with no problems at all
Thanks,
Jetijs

[theremart]

Also I would suggest you to get a high wattage 1k wire wound pot for these experiments, because if you use an 1/4w pot and only one transistor, that will be fine, but if you add another transistor to the circuit, there will be twice the current flowing through the pot and a small one could fry. I fried several pots with only a two transistor circuit. Now I have a 20W wire wound pot and am using that on a six transistor setup with no problems at all
Thanks,
Jetijs

I am all ears where can i find one on the net? I had some fun i connected my usb servo to the pot an adjusted it with that amazing the variations you can do with this.

[Jetijs]

I bought my pots on ebay from this guy:
eBay UK Shop - SAN FRANCISCO SURPLUS: Resistors, Power, Resistors, Variable, Meters

[Jetijs]

OOPS
I must apologize for the SSG multi coil circuit I posted earlier, I forgot to add diodes to the transistor bases in that circuit. Here is how it should look:

[gabriolaman]

my god tunning multi strand coils is a night mare

i cant get it to work gonna take it apart and start from scratch

when ever i hook up the second power strand\transistor the neon on the first one stops lighting up witch leads me to believe it stops spiking witch is no good any one know whats up?

[Jetijs]

The neon should never light up, if it does, then there is something wrong with your circuit, for example, the outpu/charging battery is not connected