Check it out.
http://www.youtube.com/watch?v=E20BWoeHCIw&feature=channel
I doubt his values are correct: what I have experienced is that whenever I connect a small e-motor (e.g. from toy cars which worked with 1 battery) it used up more amperage than only 0.08. These small e-motors needed at least 200mA. So with a slightly bigger 7-12V motor and this kind of low amperage I think he is doing a measurement error.
Quote from: gauschor on May 18, 2010, 03:19:18 PM
I doubt his values are correct: what I have experienced is that whenever I connect a small e-A (e.g. from toy cars which worked with 1 battery) it used up more amperage than only 0.08. These small e-motors needed at least 200mA. So with a slightly bigger 7-12V motor and this kind of low amperage I think he is doing a measurement error.
I used three different types of meters to measure the input current while the unit was operating. All of them gave the same reading. The R4 relay in the Bedini Davro setup will only allow low milliamp current. I dont know why it works but it does. Needs someone else to EXACTLY replicate it for verification
Magnetman12003
Is it not possible to dump into a big supercap and draw off power to calculate?
Chet
BTW thanks for sharing this really cool setup!
Hi Tom, I was wondering if using a single diode (not a bridge) on the output to get a pulsed DC might work for charging some batteries. An SLA battery might be helped with desulfation this way. Many of the Bedini SSG's put out a couple hundred volts. I'm far from expert on this so others may want to comment on that idea. Any idea what the RPM is on your current setup?
I think the output voltage is not a pulse but sinusoidal shape because the rotating cylinder magnet is diametrically magnetised, hence changing poles in half turns, there must be zero voltage values between the positive and negative maximums. So the diode bridge is justified, with one diode he would lose output (due half wave rectification only).
I am not sure on his text under his video where he wrote his load resistor is in series with the output, is it a mistype or he measure the voltage via the resistor?
rgds, Gyula
Ok, Tom answered my question on youtube. so he placed the load resistor in paralell with the diode bridge output. This is good news.
Now I think he would need a DC/DC stepdown converter to convert the high voltage into a stabilized 12V DC output for looping back. His input power need is 12V @ 80mA, this is what the converter should be able to produce from his present 315.9V DC output which would feed the DC/DC converter input.
Hi Tom,
I sent you a message on Youtube. Great work! I love your setup. If I understand you right, your input current is unaffected by the proximity of your drive magnet to the flux field of the coils. Is that correct?
If that is true, why not build two more of your "drive generator" setups, and place one behind your flux coils and another above your flux coils. Rectify all three outputs and wire in parallel. This would give you the same voltage at three times the amperage. I would say you could even add more, based on what I saw of the strength, and breadth of that flux field. :o
Cheers,
Bruce
Hi Tom,
It is very good you will have a circuit for converting the high voltage output to 12V DC, as you wrote to me in your youtube answer.
I think this link also has a solution for this task:
http://www.powerint.com/sites/default/files/product-docs/lnk302_304-306.pdf
The IC is the LNK302-304-306 LinkSwitch family from Power Integrations, see Figure 5 schematics in page 4 of the above link. Hopefully you can obtain such IC, and the recommended printed circuit board is shown too.
The circuit in Fig. 5 can work from any AC input voltage from 85V to 265V, at the input there is the two 1N4007 diodes in series, you may use two of your fast diodes instead if you wish. Diode D1 must be a fast diode however. The 12V DC output voltage is stabilized for up to 120mA max load current so your present 80mA input current need is well covered.
Of course there are several other types too, I show this just to inform you or others here.
rgds, Gyula