Joule Thief

[Pirate88179]

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

Finally did a video of my JT Powertube showing that it actually works...well...it does now because I use a ferrite rod as the core instead of the battery.

This video also shows how you can tune the circuit by moving the core in and out and, it shows how I do NOT get shocked by the circuit due to the high freq. output as pointed out here by you guys.

Here I am lighting one of my new led chip modules rated at 3 watts.

Thanks for all of the help you guys.

Bill

[gnino]

http://www.youtube.com/watch?v=KPTW68qVJTU
Is a six-filar coil one strand positive to base 5 strand positive to collector
The bulb is across one strand

[Pirate88179]

http://www.youtube.com/watch?v=KPTW68qVJTU
Is a six-filar coil one strand positive to base 5 strand positive to collector
The bulb is across one strand

Hello and welcome to this topic.  I watched your video and, yes that light is very bright but I am not quite sure what you are doing over there.  Could you give us more details on your circuit?

Thank you,

Bill

[gnino]

Hi the toroid Have six-filar winding connected in series
(Like tesla patent) one strand positive to base five strand
Positive to collector ,the bulb is across one strand
Don't look the value on the Schematic are incorrect
I hope is Clear my english is not good

Ciao Luca

[TinselKoala]

When you start the video, the meter is showing the current at about 0.5 amp, right? Then you switch to voltage and it shows 25 volts or a little more, right?

It doesn't surprise me that a 12 volt, 35 watt bulb would get pretty bright on 25 volts, 0.5 amp supply. (I presume the lit bulb is one from the package you show.) Without a measure of light output it's hard to tell if the bulb is brighter than it should be with a 13 Watt supply.

What "Tesla patent" do you refer to?

Giving a schematic that does not show the correct component values, parts count and transistor part number,  is like giving a person in Madrid, a London subway map and expecting them to find their way to the Louvre.

Do the "X"s within the circles mean the light bulb(s)? Does the schematic show two bulbs? Does the video show one bulb?

Please provide a _correct_ schematic that corresponds to the circuit you show in the video, with all the correct component values including transistor part number. If you don't know the inductances of the windings just give the number of turns on the toroid for each one, please.