Joule Thief Bedini Motor

[jadaro2600]

@all:

Issue: The blocking oscillator in the joule thief circuit is resonating in the kHz / gHz range, ..how does this translate to pulses; will there be some sort of frequency divider?

[jonnydavro]

Hi.Today i made a USB Joule thief Bedini motor which charges a 12v battery from the usb port on my laptop.I can think off plenty off other things that could be run in this fashion.Here is what i have up to now.Here is a video off it running.
http://www.youtube.com/watch?v=WXWAQ3zTZNw

@Jadaro.Sorry i can't help with your question.
                                                                  Regards Jonnydavro.

[Pirate88179]

Jonny:

Excellent work with the USP source!  This will be very helpful to a lot of folks.

I just completed my Bedini tonight. (I started it about 6 months ago)  It works although I found that my magnets are facing south out instead of north.  One thing I noted was that, when I went to smoke a cigarette, I disconnected the power battery (I am using 9 volt nicads) the motor was still turning at a very high rpm and continued to run.  I left it like this for about 5 minutes and then disconnected the charging battery and it stopped.  Do all Bedini motors do this?

If I want to increase my rpm (I am guessing it is about 6,000 or so) if I add a second coil like you did, do I used the same transistor?  Or, do I make another separate circuit?  If I do make another circuit, how are these synced? Or, do you wire the transistors in the Darlington fashion?

Sorry for all of the questions but, I know, from your work, you have the answers.  Thanks.

Bill

[jonnydavro]

Hi Bill.Great that you have finished your Bedini,can't wait to see some pics.
Regarding North or south facing magnets.I find both orientations work well as long as the polarity off the coil is correct,yours obviously is as it is spinning so good.
Adding a slave coil is fairly straight forward.You do need another transistor,1 resistor and 2 diodes.The transistor and slave coil are wired in parallel with the power winding off your bifilar coil and 1st transistor and you use the same value resistor that you have used on your first transistors base on the 2nd transistors base and connect to the variable and put a diode from emitter to base the same as in the first transistor..Ive sent you a pm with a drawing.
Regarding your motor continuing to run after you have removed the run battery is not normal for a Bedini.It is in fact what we all seek.Could you have removed the charge battery instead off the run battery?
Was the neon lit when the motor was running minus the run battery?
Try it again Bill as i can see no way that the charge battery could run the motor as per Berdini's schematic.You never know you may have discovered something already
I  think your going to enjoy experimenting and modifying your Bedini and i can't wait to see what you are going to do with your joule thief and maybe fuji  as you are light years ahead off me with this.I am still using my first joule thief and i am trying to find a clear step by step off marks mk2 so i can take the next step.If i can be off anymore help just ask Bill.
        Kind regards jonnydavro

[Pirate88179]

Jonny:

Here is my newest video of the Bedini replication.  I am using lead acid batteries this time.

http://www.youtube.com/watch?v=QznwV4SzYho


Thank you so much for all of your help and kind comments.  I really appreciate them.

Bill