Smoothest, and best, store purchased Joule Thief I have seen yet.

[Legalizeshemp420]

Yep. I counted just about 6 full cycles in 3.5 microseconds (7 full divisions). 6/0.0000035 = 1714285.714285... and respecting sig digs that's 1.7 MHz. Pretty good for eyeballing a YT screenshot of an analog scope, eh?

Yes, I am amazed to be honest.

You are EXACTLY the type of viewer I love having on my channel.  They can see and set forth because frankly I try to explain as best as I can but I have always only given most of the story to something and, just like a teacher, expect you to do just a little leg work.  That is in real life though and on my YT vids I sometimes forget to give all of the answers and besides I can't know what some guy in Zimbabwe is wanting out of the video, hehe, though I do try and give as much info as I know.

I love all of my viewers and just wish I had more to be honest but I don't know how to get them as I have never been a salesman type.

[Legalizeshemp420]

Well, I just finished with this thing in Multisim and it does not have 2 components I need to simulate this 100%

Ffirst it doesn't have any solar cell models of any kind.  So, I just replaced it with a SPST switch to simulate what the Solar Panel is doing in the circuit.  POOF, I did that and it worked when you close it (this is exactly what a dark solar cell/panel would act like in this circuit).

Now, not having a model for the S9013 (I suck at model making because I change what is needed to the tee and it will be wrong no matter how many times I go over it) and using the BC337 in its place works but I know from the real world that will change brightness, frequency, etc... and it did.  I simulate this at 1845 Khz and my LED is not lighting up because it is simulating 2.5v from 1.2.

So, I know it works in the simulator at least but I am not done with this yet.

[TinselKoala]

Schematic?

[Pirate88179]

I posted these photos on the forum back in 2010 and I never could figure out what type of JT circuit my garden lights were using.  2 resistors on one side of a very small circuit board and a gray blob on the reverse side.  I was told by someone here that the blob covered the chip.  Someone else said it covered the transistor but, only 2 wires run to this blob and the blob is just about the diameter of a pencil erraser and maybe .070" high.

I had about 10 of this type and have used the circuit for making many other things but had no idea how it worked as a JT with no transistor, coil or chip.  (as far as I could see anyway)  This circuit would drive a nice 5mm ultrabright LED very well.  (The lights come with a 3mm led)

Bill

PS  I even made a device using this circuit and a cd driving 2 red leds spaced apart like eyes to scare away predators from my friend's chicken coop.  Hangs from a tree, charges by day runs all night.

[Legalizeshemp420]

I see 1 coil, 1 resistor and 1 IC (under the blob) in your pictures.