Joule Thief

[Mk1]

@jeanna

the core like a fine crystal wine glass has a freq , finding the right note (freq)
will make the core vibrate .Ex ; like a 440 tuning fork of A , if you tap it it will give you the note A , now if you have a tunes instrument and play the A note , the Fork will start vibrating on it own .

Ex glass breaking , crystal vibrates good if you find the right note you can break it , if not it will not vibrate and break.

So all i an saying is high freq fine but the right for the core will release more energy since the core will vibrate .

Also my point about the bridge is that if you just connect the led to it you send back energy in the coil , it usually changes the voltage for the coils in a big way . Just something to keep in mind .

Mark

[TinselKoala]

I get interesting effects when I expose my JT toroids to external magnetic fields. Like a DC field from a strong NdBFe magnet, or a strong oscillating field from an externally driven electromagnet. The LED changes color!!

No, not really. 
But it does vary in brightness a lot, all the way from off to berry berry bright, so I know varying the saturation level of the flux in the toroid can change the behaviour of the circuit. I think this might be a way of simulating the effects of different permeability materials using a single toroid.

[Artic_Knight]

@jeanna

the core like a fine crystal wine glass has a freq , finding the right note (freq)
will make the core vibrate .Ex ; like a 440 tuning fork of A , if you tap it it will give you the note A , now if you have a tunes instrument and play the A note , the Fork will start vibrating on it own .

Ex glass breaking , crystal vibrates good if you find the right note you can break it , if not it will not vibrate and break.

So all i an saying is high freq fine but the right for the core will release more energy since the core will vibrate .

Also my point about the bridge is that if you just connect the led to it you send back energy in the coil , it usually changes the voltage for the coils in a big way . Just something to keep in mind .

Mark

all this talk of "resonate frequencies" is nice but would it really have an effect with electronics? i mean i can see finding the right frequency for water so you can decrease the amount of power needed to break it up into hydrogen, resonate frequencies i can see for destruction! but to harness free energy?

im not saying its impossible cause i have seen some wierd things but if your looking for resonate frequencies to help you i would say it would need to be with electrolysis to get anything extra.  but thats just me.

[jeanna]

The following is a partial repeat. The first is the repeat from last night. I changed 2 columns to be more consistent.

These should be easier to read.

Reversing the base and collector coils had a strong effect in many places And it also played into something with the base caps.

there were 2 places where the brightness of the leds was so divergent from the pattern, I had to make a note.

I hope there are no mistakes tonight!

jeanna

[jeanna]

@MK1
About resonant frequencies.
Don't forget the fact of harmonics.
A resonance of one of these toroids is probably pretty low.
It is probably a dull thud.

I have seen very definite signs of resonance on the scope, but not much benefit from either the brightness of the lights or the volts going up or amps going down.

I am only saying we aren't there yet.
We are still groping in the dark.

Thank you for everything- your discoveries and your assistance, just the same,

jeanna