Joule Thief

[Mk1]

@all

If we can get energy from a dead battery , then what is the dead battery life expectancy ?

[nievesoliveras]

@all

I would like to share with you a circuit. The value of it is the feedback to the source. It does not matter what pulse motor you use. Also the idea can be used with joule thiefs.
You can eliminate anything from it and use the parts you like to build your project. Just share your results too.

Jesus

[mdmiller]

Although I can't get my secondary inductor coil over the toroid to work through the diode bridge I just laid out on my breadboard, I noticed something -- but it could be nothing.  There was still some enamel on the wire from the toroid coil where it inserts into the breadboard.  This connection when inserted "just so" had properties of very high resistance.  When it did, the led pulsed rapidly, the JT oscillating rapidly took me by surprise.  For whatever reason, it reminded me of the recent ist video with the chattering relay controlled by a pot.  I recall an ist comment about the importance of the resistor controlling the circuit frequency. 

1N4007's okay for a bridge ??

[Mk1]

@mdmiller

I think you got something there! The power may be enough the make a spark gap , it may be a way of converting and regulating voltage.

Would a small filament bulb work , and permit some type of reading? Anyone ?

Good work!

@jesus

Thank you very much !

[timmy1729]

The huge transistor looking thing I pulled from the power supply last night turned out to be a Schottky Barrier Diode d83-004.
Here is the datasheet http://pdf1.alldatasheet.com/datasheet-pdf/view/61331/FUJI/ESAD83-004.html
The two end pins are diodes that direct current to go through the center pin.

Can this be of some use? What can I do to experiment with this, if it is useful for a JT?