Joule Thief

[Eastov]

Lidmotor did a video showing that the waves are multiple
compounding waves. What fequency are the spikes? 

My neighbor's pace-maker?

[xee2]

Using 6 turn primary and 250 turn secondary on 3.38" toroid with the two transistor circuit produces increased output power and circuit runs quiet.

7 watt 110 volt bulb video:   http://www.youtube.com/watch?v=E35pxEGd-Fs

[stprue]

@xee wow thats impressive.  altraz lets see yours!  xee what is the ma pull?

[detrix42]

Hello to everyone.  I am very new to the JT circuit.  I have built one yesterday and lit up 3 LEDs off one AA battery.  wow.  I have only read the first 13 pages of posts in this forum, so I apologise, if my questions here were answered in the 860+ pages I have not read.   I am a Joseph Newman advocate.  I have 9 videos on youtube, just type in my username in the search to see my works.  I have a third larger motor in the works.  check out my thread in the Newman motor section.  I detail the construction of the third motor in the second motor thread.   

I am here because of Jarado2600 has been telling me about the JT circuit, and he has posted a suggested schematic to my thread.  I am not much of an electronics engineer (yet), so I am not entirely sure of what values to use in a JT circuit to get what I am looking for, which is:

I want to work with say 12v, stepped up to 1000+v, which will then be the source to my motor coils.

Is this possible?

[crowclaw]

Hello to everyone.  I am very new to the JT circuit.  I have built one yesterday and lit up 3 LEDs off one AA battery.  wow.  I have only read the first 13 pages of posts in this forum, so I apologise, if my questions here were answered in the 860+ pages I have not read.   I am a Joseph Newman advocate.  I have 9 videos on youtube, just type in my username in the search to see my works.  I have a third larger motor in the works.  check out my thread in the Newman motor section.  I detail the construction of the third motor in the second motor thread.   

I am here because of Jarado2600 has been telling me about the JT circuit, and he has posted a suggested schematic to my thread.  I am not much of an electronics engineer (yet), so I am not entirely sure of what values to use in a JT circuit to get what I am looking for, which is:

I want to work with say 12v, stepped up to 1000+v, which will then be the source to my motor coils.

Is this possible?

Hi detrix,

You'll certainly find a wealth of ideas for various projects within this thread. The JT circuit will produce very high voltages from a very low input source voltage, and many of thedesigns reflect the need to keep the source voltage low at around 1.5v. The JT concept will work at higher voltages of course by experimenting with component values. Also consider the use of boost converters which could be more efficient for your purposes. You can use MOSFET devices more effectively or even IGBT semiconductors for your purposes. Either way the circuits can still be kept simple. 1000volts is rather a high value  so i presume the coil impedance's are going to be quite high! otherwise I shudder to think of what DC currents are otherwise likely to be considered in your designs!!! If your 1000volts needs to be accurate and stable then a PWM driven circuit will be a must. Don't be frightened by the technical terms.... if you don't understand just ask, there's enough Guys and Girls here only to willing to offer their help.