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Type: Posts; User: Mike Swanson

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  1. Ah great, you saved me a diode!

    Ah great, you saved me a diode!
  2. Hi--just wondered what sort of diode to use for...

    Hi--just wondered what sort of diode to use for common ground mode. Can you use the 1N4007? I don't remember seeing anything in the book about the specific diode but will check again.
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    Not an answer to your last question but this...

    Not an answer to your last question but this might be useful. It is the spreadsheet for testing battery input and output. You have to measure the input current and time the machine is running and...
  4. Just what I was looking for thanks!

    Just what I was looking for thanks!
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    Thanks for the good info on this thread, not to...

    Thanks for the good info on this thread, not to hijack but I wanted to know if Ralph's machine had matched transistors?

    Mike
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    Thanks for posting, that looks very nice. I am...

    Thanks for posting, that looks very nice. I am interested in how it does :).

    Mike
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    Hi, the second coil I tried for my SSG experiment...

    Hi, the second coil I tried for my SSG experiment was two strands 18 AWG 200 feet. Then upon common advice I shortened it to 130 feet +/-. For me, the reduction seemed to lessen the efficiency. My...
  8. Hi, That does look pretty cool. Aluminum is...

    Hi,

    That does look pretty cool. Aluminum is not magnetic but I seem to remember reading that it can induce a small drag on the wheel with magnets on it? But might be worth a try maybe someone can...
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    Did some modifications, battery COP seemed to go...

    Did some modifications, battery COP seemed to go down and system COP also down a bit. Wondered if there was anything obvious I should improve from these poor quality photos :).

    Top of circuit...
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    Hi Kim! Cool setup.:D I would also know if I'm...

    Hi Kim! Cool setup.:D I would also know if I'm supposed to have one spike only as I seem to have groups of 8 or so and as I decrease resistance there are less. But by the time I get to one, the amp...
  11. Ah, good! Took me awhile to figure it out:eek:....

    Ah, good! Took me awhile to figure it out:eek:. Here is another link:

    My scope photo:

    http://4.bp.blogspot.com/-nYfDmrUGrlQ/UR3cg_7_LAI/AAAAAAAAANc/fJ0PRjqma08/s1600/Spikewoot.jpg

    A good...
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    For future reference--the scope was fine, just...

    For future reference--the scope was fine, just had to briefly disconnect the charge battery, take a shot with the scope, then reconnect fast so as not to damage transistor. Was able to look at the...
  13. Well this is what I measured with ATTEN ADS...

    Well this is what I measured with ATTEN ADS 1102CAL--in order to see the spike I figured out that I had to disconnect the charge battery very fast, take a scope shot and reconnect it:

    1500

    ...
  14. Hi, John K told me: "The probe ground should...

    Hi, John K told me:

    "The probe ground should go on the emitter of the transistor and the probe tip should go on the collector of the transistor."

    Seemed to work, but I couldn't see full spike I...
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    ;) Well my guess that I am actually getting...

    ;)
    Well my guess that I am actually getting voltage spikes higher than my waveform shows--probably where you see a vertical line spiking up from the top. I am guessing that this actually goes higher...
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    Hm, my scope shows 30-35 Volt peaks yet my neon...

    Hm, my scope shows 30-35 Volt peaks yet my neon bulb lights up pretty brightly when charge battery is disconnected (just for an instant to test)...I was under the impression that the neon wouldn't...
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    Thanks also for this thread. My AGMs seemed to...

    Thanks also for this thread. My AGMs seemed to work okay (probably in the short term), but I am keen to replace them with proper flooded lead acid.
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    Thanks guys! Shortened the coil and I get 1...

    Thanks guys! Shortened the coil and I get 1 pulse, same looking waveform at about 0 ohms, but my draw is an amp or so. Interestingly, when the wheel speeds up at 0 ohms, I can increase the resistance...
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    Okay, ran it from 910 ohms (roughly the setting...

    Okay, ran it from 910 ohms (roughly the setting at which I was doing my 20 charge runs) down to zero and the peaks did indeed lessen from 5 to 4 (840 ohms), 3 (650 ohms), 2 (410 ohms), then finally 1...
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    Ah, tyvm! This makes more sense--get a nice 12.4...

    Ah, tyvm! This makes more sense--get a nice 12.4 DC reading before machine is spun and this while running:

    1381

    Still the 5 peak pattern but no sine wave--er maybe my house ground is not very...
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    Wanted to post before I did more troubleshooting....

    Wanted to post before I did more troubleshooting. This is my first time using an oscilloscope so I might be doing something wrong, but with the probe grounded to wall ground and the tip on the power...
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    That is some thick wire! Good to know that it's a...

    That is some thick wire! Good to know that it's a significant improvement, I might try that with the copper tubing, thanks. And thanks, Tom C.
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    Ok, thanks for the advice. My freewheel time was...

    Ok, thanks for the advice. My freewheel time was 9 mins or so but I've seen higher on this board. My battery cables are I think 10 Gauge. 8 Gauge was too hard to solder but maybe I can work something...
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    My SSG And First 20 Charge Runs

    Hello,

    I wanted to post some photos of my SSG and my first 20 charge run data. I'm very pleased with the performance :D. I averaged a system COP of about 70% and a battery COP of 180% :thinking:...
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    Sticky: Thanks a lot for putting this book together!...

    Thanks a lot for putting this book together! Couple of tiny typos if interested--p.63 "The one's" should be "The ones" and p.23 "passed" should be "past." To think I rewound my counter clockwise coil...
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