Joule Thief

[Mk1]

@Stefan

Thank you very much , do you know if pirate deleted his account ?

[crowclaw]

@ jeanna,

If you have not already visited this site have a look hear: http://www.66pacific.com/calculators/coil_calc.aspx
It could be of some use.
Experiments using filament bulbs will effectively short out the collector of the JT to ground as the filaments DC impedance represents a short circuit. Either use a separate winding of just a few turns or include the diode. LED's are relatively high impedance devices that emit photons to produce their light.
PS I hope I don't to insult you intelligence, as my comments are only intended as a general guide.
@ All _
Keep up the good work, lets see normality returning to the forum and the topic. I am a 63 year old electronics engineer, I have designed many projects within the electronics industry over many...many years, irrespective of my knowledge and understanding of the subject in general I keep an open mind, your experiments will over time  reward you with a unique knowledge of what can become an absorbing and interesting hobby if nothing else. It is only fair of those like myself who hold that knowledge to help and guide others along the way.
To be able to share with others is a wonderful and satisfying reward in life.

[jeanna]

I bought a 13 watt CFL today and tried it out. I had no problem getting it to light up completely when battery was connected but it does not seem as bright as Lidmotor was getting. So maybe the extra turns do help.

EDIT: I added another photo. It looks brighter when it is standing up.

xee2,
That looks much brighter... bright enough to see the toroid a few feet away.

====

I have not read all the posts yet but, I did see crowclaw's post.
Thank you.

@crowclaw
I am wondering if you have ever used the jt as a pulse dynamo in any of your normal EE type designs?
--- oh I must add, and not rectified it?

I believe my experimental circuit (NOT the jeanna's light) is 2 parallel sets of parallel circuits being magnetically driven by the pulses of the basic jt. I removed the bjt light so I am not wasting that, and I am working with series inductors along the line wires of the parallel circuit.
I believe this is very similar to normal house wiring design in many ways.

Each inductor in series seems to be augmenting the voltage output of the adjacent/connected part of the circuit.

If you can shed some light from experience with this I am much obliged.

thank you,

jeanna

[innovation_station]

I guess, Farrah Day needed a rest for calling names.
I have set her(him) on read only now,
I hope now we can work on here with more ontopic
comments.

Also IST it would be good, if you could also stay more ontopic
and describe your experiments some more or
post links to your youtube videos.

Many thanks.


Regards, Stefan. (admin)

yes ...  i will stick to the topic ...
right now power .. wich video? i will do my best to explain ..

i have seen by just stopping the flow in a wire .. you can get a good colapse.. wich you can collect in a cap .. via a diode ...  so pass engery through a coil catch it in a cap allow it to colpase .. and catch that in the same output cap ...  this is gain ...

ist!

at the point of break the charge will be releassed..  at the switch and the cap ...  both are points of break in the system .. for gain you must rectify from switch as it can only push so much into the cap ... the voltage  gain needs to come from the colpase as it is the only thing of higher potencial .. that will provide the extra push required ..  you can do this in a single pulse to best understand ..

[stprue]

@Jeanna

I just was your vid of the 13 watt.  Awesome!