Joule Thief

[tgraca]

Yep. Here's part of a basic tutorial series I made to try to explain to a "certain someone" how her circuit components actually work. Like water off a duck's back that effort was, but some other people may have found these demonstrations useful.

http://www.youtube.com/watch?v=tKstLQYayNA

I love the simplicity. And those rails... I immediately got a mental image of a choo choo train! lol
PS - Glad you shared that. I am going through your videos. You have many many many... nice work!!!
... and thanks! -teo
PSS - just watched some more and found some mention of a troll queen... is she still tormenting you. If not, please bring her back.
I can't get enough of this! lmao! I could watch these videos all day!

[tgraca]

Just for clarity, what I suggested on the EB topic was to use a large value supercap in parallel between your EB and JT circuit.  This captures those spikes and also allows you to store usable power to be able to run devices that you would otherwise not be able to run.

Example:  My dmm shows about 1.9 volts or so from my EB.  I can charge my 2.7 volt, 650 F cap fully so...either my dmm can not read the spiky voltage properly, or, the cap is storing all of the energy from the EB, including the spikes to get to 2.7 volts.  Maybe both?

What Mark was suggesting, I believe, was a cap inline with the base and the coil.  Gadgetmall did this a long time ago, as did several others.  I believe he was using a ceramic cap for this.  As a matter of fact, I have a bunch of ceramic caps over here...some have numbers on them (code?) some are blank.  This was why I purchased my meter so I could test the values on them and use them like Mark was suggesting.  Of course, my meter is useless for this so I never have tried this to date.

I hope I have explained this ok.

Bill

I had tried running a variety of configurations of my JT circuits without load, except for a cap, and I always get a higher voltage, but I haven't tried that with the 2 earth grounds for anything above 100 uF. I like the idea of JT circuits as battery chargers and need to get back on that. I am still finding new ways to fail with this earth battery stuff! I thought of another possibility and test this morning... I give it a 1% chance of success based on my past performance! lol
Thanks Bill!

[MarkE]

Yep. Here's part of a basic tutorial series I made to try to explain to a "certain someone" how her circuit components actually work. Like water off a duck's back that effort was, but some other people may have found these demonstrations useful.

http://www.youtube.com/watch?v=tKstLQYayNA

When will you be publishing the "Complete Secrets of MOSFET Common Source Biasing" instructional book?

[tinman]

When will you be publishing the "Complete Secrets of MOSFET Common Source Biasing" instructional book?

Sounds Peter/Arron to me.

[MarkE]

Hmmmm.