Joule Thief

[jadaro2600]

@ jadaro2600

My comments are based on my experience with this circuit. In order to get the LED to be bright I had to make my own inductor in order to get a low resistance (50 ohms was for the manufactured one). But this was 100 mH and you are only using 100 uH so your problems my be different.

Ok, I think I understand what you mean.  I like this circuit as well ( you posted ) I remember it from the NPN PNP derivatives - low energy, etc thread.  I've been meaning to post there with my mosfet results - but they've not been going so well, apparently BJT's are the way to go for now.

Can you give me an idea of how many turns you have on your self made inductor?

I picked up some ferrite rods and was thinking of winding my own trigger coils - unfortunately I have no way of knowing what the inductance is - as I have no meter to measure it.

I would like to create this to work with only one inductor, a single coil, without a coil to base, but it seems I would have to look into negative resistance hacks, or some other component specific peculiarities in order to do this.

@all,
... I had another thoughT, a capacitor.  A FLUX capacitor, ..

Something with an interference plate to confuse the operation of the transistor.  It could have three or more plates, if it had three plates, then they could be stacked, and the capacitance could be made ( with leads attached ) to each of the three plates.

Four plates would be shaped like an 'X' where each would be a wedge-like plate...etc.

Though I'm not an electrical engineer; I think the capacitive coupling would be fundamentally such that it would create charge confusion and thus an ability to create a resonance oscillation when properly connected to a transistor.

Also, I think it could be modeled with basic capacitors, the leads on those capacitors may not work though.

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..that's enough of my ascii art though.

[stprue]

@all

I was salvaging a microwave , there is nice stuff in there , first the motor has a quite nice coil , plenty of 30 gauge mag wire , the magnetron is always a great treat for magnet lover , the AC cap is great , then there is the transformer , we had some heated discussion he and i , you see i need fat wire.

@stprue

I made i new video , i don't know if you had any chance to see it .

There it is anyway http://www.youtube.com/user/abramrk1#p/a/u/0/wS935WyumjY

This was a great video and within...hopefully....a few weeks I might need your help designing this coil!  Very powerful for 1.5v!  What are the bulbs rated at?  I have been thinking of a good idea that I will need to try when some more parts come in.  Until then I will be testing the super JT or spacial coherence exciter circuit.  Keep up the good work.

[stprue]

@MK1

Here is my AV plug!  You should build one and see if it can detect your coil!

[stprue]

For those looking for LEDS...ebay has been a good source lately

http://cgi.ebay.com/100-pcs-5mm-round-White-LED-superbright-bulb-lamp-light_W0QQitemZ330398154435QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item4ced43bec3

http://cgi.ebay.com/500-pcs-5mm-round-White-LED-superbright-bulb-light_W0QQitemZ330399597073QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item4ced59c211

I just got 500 for $6.99 US with free shipping!  Dont see that on this last quick look though!  Sorry!

[sirmikey1]

stprue,
    May also be something to try on the transistor base
Mikey