Joule Thief

[electricme]

@Mk1
Hello Mark, nice to see you are watching over the sleepers also, ohhh myy wont we get a ribbing when that lot wake up lol.

I was just in the process of posting a post when I got booted by Stefan updating the forum, lost it too, never mind, I understand he needs to do house cleaning to keep his OU site in good working order.

I just arrived back from the dump, got a BIG Brigs and Stratton engine, I tink it needs to be freed up, a job 4 ron. lol

Mark, I noticed your remarks to IST, I also have trouble getting my photos right, light is my problem also, I have tried desk lamps (all types), I think it might be my mob camera auto iris shutting down too soon, might have to learn to use my other 5meg Pixle camera and see if it makes a difference.

Mark, how do I turn hi freq dc pulses ultra low current into stright DC low current?

I think I am getting close to OU with my torid setup.
I think one of the things we need to do is the placement of diodes everywhere to direct voltage and current arround this circuit.


General Jim

@ IST, lookie what I got here.

[Mk1]

@electricme

Well general , you can make a smoothing circuit , from 2 cap and a resistor. But i got a feeling this is about charging , fill a cap and discharge , like the bedini .

And try one diode charge, or even no diode .

Mark

Sun is good on picture , fluorescent do well.

BTW i am so jealous about those 2 greenys , a twin mk2 

[electricme]

@ those who are cleaver,
I got a nice one here for someone.
I have 3 coils mounted on magnetic shafts.

I have not seen these before.

The coil end of each shaft has a chissel point.
The other end is squared off.

The coils are wound singerly.

General Jim

I might have to get off the net, big storm approaching me, warnings have said to look out for big hail.
http://mirror.bom.gov.au/products/IDR502.loop.shtml

[electricme]

@ Mk1
You are right, go with your gut, feeling, most times one will be right.

Yes all this time I have thought the way to go with getting heeps of power out of the JT is to fill up a cap, rapidly, then discharge it rapidly, or use a big coil, charge it rapidly, discharge it rapidly, the trick is to know how.

I,m just charging my big 1.2v wet cell and learning at the same time.
I better change the AA batt shortly.
Thanks Mark

General Jim

ps storm is getting real close now, skies very black

[electricme]

@ all
I decided to add another wet cell 1.2v Nicad into my JT circuit, here are my reasons.
This torid is capable of putting out over 36.0volts open circuit, by controlling the voltage I drive the base of the transistor with.
I believe the output voltage will go higher, but not wanting to destroy the LED in series with the 1k resister, or the 2n2222 transister I pegged it back, at the moment the TR has 1.560 ohms + what ever ohms a HiBright has between A and K feeding into its base.


Each wet cell = 1.2volts x 2 = 2.4volts

Present O/C voltage to Both wet cells is 2.60volts
Volts in hand therefore is 0.20volts

I take the output from the torid, rectify this and put it into the series Pos and Neg batt terminals.

As the torrid is supplied by a single 1.2v AA MH battery, I take the Pos from the 1st wet cell battery (1.20volts) and plonk a lead back to the torid pos where the Pos lead from the AA batt feeds into the torid.
Later I must solder in a higher current diode here, then I will insert a LM317 adjustable TR here so I can feed a more precise BACK FEED voltage to the torid.

Photo 0430.jpg = is the waveform displayed after I connect both 1.20volt wet cell NiCad batteries into this JT charging arrangement.

TWV is tooo quick and some places is too dim to read voltages, so I will redoo it tomorrow in daylight.

General Jim

OK time to go to the flicks.