Joule Thief

[gadgetmall]

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)

[TinselKoala]

@gadgetmall: That is some nice stuff. I like the Black Box a lot. I'm sorry that I can't help out by buying one from you, but I'm impoverished myself..... the panel idea is also great. You'll have success on EBay I'm sure.

@Pirate, Stumpy:  Thanks.... if the Lathe is the King of Tools, then surely the Oscilloscope is the King of test equipment. I'm no JT expert.... gadgetmall and the rest of the folks on this thread have gone far past my low-power HVJTs... and I wish LTseung all the best.... but I've seen a lot of "false alarms" that can be traced to improper use and/or interpretation of oscilloscopes... or even the lack of use of a 'scope!
Even here I'm just touching the basics.... there is some advanced scoposcopy going on in some other threads that show just what kind of info an experienced user can get from scope traces, far beyond my level here.
I don't know what math capability Lawrence's DSO has, but as long as it can display two traces, it is possible to do real power measurements using it, even if it doesn't have trace multiplication or integration. It's a timeconsuming process to do it manually on a still image of the scopetrace, but using my rather tedious manual method I can generally get to within 5 percent or so of a "correct" average power and energy integral as given by a fully math-capable DSO. Of course the DSO does it in realtime or in seconds.... my manual method takes an hour of concentration and some graphics processing and spreadsheeting.

@gadgetmall..... again, I am really impressed. Wow..... keep up the high standards and the nice design concepts. Respect !! Get those items listed on EBay, make the purchaser pay the shipping..... and be ready to handle a lot of orders !!

@LTseung: I hope we can confirm or correct your power measurements. You've done a nice presentation, so let's clean it up with unquestionable data and let the chips fall where they may.

[synchro1]

@TinselKoala,

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

[pentiger]

Hi Guys . Feeling Good today . well ok .
Here is one of my latest builds from 4 that i am putting together on an Ebay sell . It's that time of the Year again and Baby needs Christmas Money .

This is PocketPower+  She will run the devices shown for 6 hours give take to 90% ..

What do you think is in it besides a 1.2 volt battery? The last Pic is a Cfl with the Guts out.
If anyone is interested i can make them a video i guess .

I am waiting for some smaller solar cells so it will be self charging as there is plenty of room on my little Black boxes .

Would it include a fuji circuit inside. I am very curious, it would be great if you could post a video. Also when you post it on ebay please send me a link to the auction. I will help you get some customers.

[stprue]

@Gadget,

That's a sweet little device you have there.  I would love to see the guts of it, diagram or video.

Nice work....as usual!