Bedini ssg energizer

[tachyoncatcher]

Way to hang in there Garrett. That's a good rpm for a single coil, bike wheel energizer. A 12v battery discharged and holding 1.5 volt is a VERY bad battery. Let your Bedini charge that battery over night. Let it rest for 2 hours, if it holds >10v then charge it again. If less, then it is probably permanently damaged, unless it's an old battery. Do not try to use that battery to run your wheel. It needs a lot of conditioning. You should get a ohm reading of your pot by disconnecting one of the leads and get a reading where the leads were on your pot. This will tell you your base resistance for your wheel.
Great Job!
Randy

[Gpilot]

Ok, so if this is a good rpm, what should i do about the resistor? i am not using one right now, that the only way i got it to run. if i add another coil, do the magnets have to be PERFECTLY spaced apart? also, does it need to be a bifoiler coil as well? do i need a seperate trigger for each coil? i will do the ohms test to find my machines resistance. any more tips for increasing the rpm?

[tachyoncatcher]

@Gpilot,
If you truly want to scale up your wheel, then I suggest next Tuesday, you get this:
http://www.energeticforum.com/john-b...-handbook.html
There is no one on the planet with more knowledge than John Bedini when it comes to building these things. Regarding finding base resistance; I gave you direction on my post from yesterday. However, to start your wheel, you may need a lower base resistance. My wheel has a starting base resistance of only 50 ohms. Once it spins up I adjust my pot to around 2k for the best tuning parameters for my wheel. Yes, your magnets should be evenly spaced. How else would you be able to tune the timing of your wheel if the magnets reach the coils at different times? Use only one trigger for all coils. I'm sure the handbook will have a good schematic for that. I use one transistor for each winding. IE, if a coil has 5 windings, then I use 5 transistors for that coil and the trigger comes from my primary coil. When you start building multi coil machines, precision becomes important.
Good Luck.
Randy

[Sephiroth]

While i was trying to get my rpms up, i tried using a spent 12v battery as the seconday. It started with 1.5v. The machine would ONLY function if the pot was all the way to the left, full resistance. If i turned the pot up at all, the pot would spark and the neon would illuminate. I left the pot turned down and charged the battery for 1 hr. and it went from 1.5 to 4.5. I have switched to an identicle battery as my primary and will be charging and discharging them for a few days. Just need my rpms up.

This is entirely because you have a heavily sulphated battery as a load. The impedance of the battery is so high the trigger circuit is a lower impedance so that's where the energy is going.

I'm trying to bring a battery back to life that I intentionally killed for the experiment ^_^ At the moment it sits on around 4v but the spikes going to it are off the scale on my scope so over 500v! This is lighting up the neons but my pot seems safe. What are you using for a base resistor?

[Gpilot]

This is entirely because you have a heavily sulphated battery as a load. The impedance of the battery is so high the trigger circuit is a lower impedance so that's where the energy is going.

I'm trying to bring a battery back to life that I intentionally killed for the experiment ^_^ At the moment it sits on around 4v but the spikes going to it are off the scale on my scope so over 500v! This is lighting up the neons but my pot seems safe. What are you using for a base resistor?

The only way i could get my machine to function was to bypass the resistor. Although the resistor is still soldered to the base, i have the pot directly attached to the base. I have resistors of all sizes, but none of them would accelerate the wheel.

[Sephiroth]

It does sound like the pot is completely burnt out. Turning all the way down just makes a dead short.

What's the lowest base resistor you've tried?

[Sephiroth]

after reading through some of the earlier posts, it sounds like the circuit is being forced into self oscillation. It's normal for an ssg to self oscillate some times, but the magnets passing the stator normally stops the self oscillation.

There's only two things I can think of that could be forcing it into self oscillation.

1. If your base resistors are actually a lot higher than you think they are. Like over 1k ohm.

or

2. If the 1N4001 diode is removed from the circuit it will force it into oscillation.

Have you tried replacing that diode?

[Gpilot]

I have a 1k pot, 2k pot, and 5k pot. I felt i had burned up the 5k, so now using the 2k. 100ohms is the lowest resistor ive tried. 1k ohms is the most. How can my ssg be in self osilation if the machine works now? I tiny push will accelerate the wheel. I can change the diode. Which one? Base or collector?

[Sephiroth]

Without the 1n4001 diode an ssg circuit will oscillate at very low resistances, but go low enough and it will behave "normally" (except no ssg should be operating with a resistance this low). The 1n4001 is the diode between the base and the emitter.

[Gpilot]

Without the 1n4001 diode an ssg circuit will oscillate at very low resistances, but go low enough and it will behave "normally" (except no ssg should be operating with a resistance this low). The 1n4001 is the diode between the base and the emitter.

Both of my diodes are 1n4001 because every place i went (in italy) told me the 4001 and 4007 are the same. I will change the diode and see what happens. But, is it even possible for the machine to be self oscillate if the wheel accelerates to 120-180 rmp one 1 coil?

[Sephiroth]

Both of my diodes are 1n4001 because every place i went (in italy) told me the 4001 and 4007 are the same. I will change the diode and see what happens. But, is it even possible for the machine to be self oscillate if the wheel accelerates to 120-180 rmp one 1 coil?

It isn't self oscillating at that rpm. though it could possible oscillate at that frequency.

I'll put it this way. Most machines with fairly normal coils will self oscillate with around 1-2k ohm base resistance... as long as their resistance doesn't go above a certain level it won't self oscillate. Now if they take out the 1n4001 diode the resistance needed to get it self oscillating will be something like 10 times lower (I'm pulling a figure out of a hat here) because it turns the trigger side of the circuit into and LC circuit and so it oscillates. But if the resistance is very low (ZERO in you case) then it won't self oscillate. It's hard to explain without diagrams of how the charges are behaving in the circuit, but just trust me for now

[Gpilot]

Ok, i understand what you are saying. Should i change the diode, find the resistancec of my transistor, and install a new resistor? I am still unsure how to test my base resistance. Tach gave mecsome instruction, but itvwas unclear as to where to put my probes..

[Sephiroth]

just try replacing the diode across the base/emitter.

You won't be able to find the resistance of the base of your transistor. When we talk about base resistance we mean the resistance that you have in series in the trigger circuit which is the base resistor & the pot.

It might not be the diode that is the problem, but that is what it sounds like. Either way, there is no way an SSG should be running with 0 ohm base resistance. Your amp draw will be astronomical and charging efficiency very poor.

[Gpilot]

I will change the diode, then experiment with different resistors again. Hopefully i can get it working with a resistor

[tachyoncatcher]

Seriously

Garrett,
Save yourself a LOT of more trouble. Get the book.
Bedini SG - The Authorized Beginner's Handbook
It explains it all in easy to understand terminology. You already have the parts you need.
Randy