Joule Thief

[jadaro2600]

One the iron wire did you check only with a meter ? iron is more resistive but still a conductor , and yes it hardly show anything out , put a led on it to get a quick answer , but that said , the circuit could also show almost anything in , think about that one .

Mark

Keep the good work

I checked it, it was .001 volts ac, and .001 volts rectified dc.  In any event, I got it to work by running current through it to the base.  ..then I tested one of the bifilar's output and still nothing.  Seems a frivolous endeavor at this point.

Iron is just being to stubborn for me.  I'm getting better results with just a mass of wires - I wonder if something like a rubber band ball configuration might work better? .. 

*edit:  The steel used in the needles are high carbon maybe? I'm not entirely sure what the deal is with the iron/steel i'm using - the fact that I don't know it's exact properties is probably enough of a reason to stop using them

[TheNOP]

if looking at the homopolar generator, eddy current is all about amps and very low voltage.

[Mk1]

@jeanna

The mk1 2x 67 volts on 24 turns , 8 jt turns, to many turns to get tuning done and lowers the turn ratio 2n3904 1k

mk2 4x80 to 120 volts 22 turns 22 awg, tuning resistor , 4 jt turns helps get the voltage up 2n3904

mk8 16x 85 to 140 volts , 27 turns 30 awg 8 wire twisted into one , tuning resistor , 4 jt turns helps get the voltage up 2n2222

The 2n2222 gives a better out put , i am not sure if its connected properly , the base is the same , i usually test both with the trimpot.

But first know your toroid . then get a good design.

If it need 20 jt turns to work good then to get the same voltage out you need 20 turns pickup coil, but 4 turns on the jt side and 20 you 5 time more.

But there is as much power in the pickup coil then the 2 jt coil , i know the amps are low but it still 1.5 volts in 2 coils so the power factor is 3 volt , the toroid and freq will do the rest .

Its about 100 volts for 30 inch of copper wire , 2n2222 are better , and the trimpot will get you in freq for the toroid.

Mark

[jeanna]

@everyone,

I also want to add that while we may not be taking many amps from the battery we are getting the same effect from the spike.

It is my understanding (and I am no EE) that the height of the "sine" wave curve is what defines the amps of the energy. The spike gives us the effect of higher than actual amperage.

Now, this may just be a confusion on my part with the words amplitude and amperes, but I think... they are shown as the same part of the curve. If not PLEASE someone correct me.

thank you,

jeanna

@MK1
thank you for that summary.

jeanna

[Mk1]

@jeanna

Also the mk1 hv , you need high voltage diode for that one , 15 foot of 30 gauge on each side. but you really need to know your toroid before doing this, it a good job.