Joule Thief

[gadgetmall]

Thank you Tk. I have parts for just 4 PocketPower+'s so they might sell.I Enjoy Your Educational videos and keen insight in all this electronic stuff.
Did you not get some very unusually high spikes off your small replication of my ua powered Jt. It look to me like your scope is showing spurious Spikes that can be harnessed for you know what But you are in front of it but man some of those peaks are off your scope range .
I am curious as to your ideas on looping this one .. I know it still needs current but if you can get it as low as 1/2 ua those spikes surely have a bit of punch in them ..

Ok  Busy building and the sun if out after two days of darkness and a fireplace stoking , I'm out


@Stprue.. Let's just say i have shared it somewhere in this massive thread already . Thanks . i got one that is 1/4 this size but it is too small to put a plug or a toggle switch (has pushbutton and wires and watch battery) . I will be auctioning that one also . Almost finished with it and pic coming. i call it micropower+

Here is a Peek inside the PocketPower+  . as you can see the battery and plug take most if the room.The Circuit is Between the Switch and 110v outlet ..ok i know that blurry picture is a tease.Most here know i am not trying to hide anything and know that these circuits were posted many many times already by me and others.hint(mod)

here is a better one ;] 

[b_rads]

Oh No @Lakes . In fact Big Business came much later in the Ebay game . Most of original sellers are Hobbyist  and every one knows you can sell ANYTHING . I have seen ever4ything including Plutonium and any drug chemical  you can imagine .

Be aware that you can sell what you just bought at kmart and paid tax for to anyone TAX free .You can also sell anything you make  and charge Sales tax in your state . Thats America for ya. Love it.

Examples of things that you make/sell are Bird houses ,bead bracelets ,homemade soap ,Free energy devices ,Plans, Ideas  anything. You can sell your clippedcoupons or your old lady(or you) can sell her used underwear or even a picture in her underwear.You can sell an IDEA or a DREAM .I have see it all on Ebay and Craigslist.No Busniess required . A toothless homeless bum can sell his toenails(or a sample of his foot fungus for a microscope slide) if he has access to a computer and an address to get the money . (and he has a Buyer)

Big news here recently of a small boy being offered on craig's list.  Turned out that it was a prank pulled by his older sister, and after promising not to list him agian, no charges were filed.
Let us know when you post these items on ebay - links would be great.  The pocketpower with solar charger would be a cool "GADGET" to add to my collection. 

[synchro1]

@gadgetmall,

Attaching a silicon polymer awning that pulled off a spring roller and proped up like a window shade would help keep the "Pocket Power" light gadget charged up!

[TinselKoala]

@TinselKoala,

                 Have you ever taken any accurate power readings on a JT circuit with your oscilliscope?

No, but I have done so on other oscillating circuits. As I said, with an analog scope it's a rather complicated process. If you want to see how I do it, take a look at the spreadsheet I attach below.

As you can probably tell from the last video, a _really_ good JT, like the one gadgetmall has that will run an LED on one microamp.... is not going to be trivial to measure and I wouldn't even attempt it without special probes and current-monitoring resistors.... and a fully functional 4-channel scope with live math capability.
But I could measure one of my high-power ones, I suppose, if I didn't have better things to do, and I intend to help LTseung get accurate measurements on his FLEET if we can manage it. Why do you ask?

(scroll to the right on the spreadsheet to see the graphics)

[TinselKoala]

@gadget: Yes, the unit I built using your lowpower circuit makes some really tall (hv) and fast rise-time pulses, very short. The risetime is so fast that it's really at the limit of this old HP180a to resolve, and the voltage is high enough to cause arcing in the little toggle switch I use to switch the LEDs. It's awesome, and I don't even have it completely right yet, it's still drawing more current than it should I think, but less than any of the other JTs I've been fooling with.  I put a really dead AAA in there and the light will glow dimly for days and days. I have even seen this, which is really weird: I'll put a really low battery in there, not enough for it even to start, and leave it. Then after five or ten minutes I'll take a look... and it's started, and glowing dimly !!