Joule Thief

[gadgetmall]

ok here is the weird bifilar / secondary setup on a large black toroid with a know Value given to me by Greg for EB research . the number is visible . Its low perm high flux . I am getting over 1900 volts . this setup Takes the Tv out . Im on satellite and the tv is about 8 feet away .The Voltage is fluctuating as i get near the setup .I need to Box this one .. using tip121 50x2 primary CW 108 secondary (green) ccw . I tried this on two meters one ol'ed on the 750 volt scale . this one is set on the higest setting 300+ and the meter can measure 2000 volts before it Ol's

Gadget

[TheNOP]

if I have 154 volts and I connect it to a light bulb that requires 120 volts and is rated at 7.5 watts, I should be able to get that to light using the secondary wires . I only need 62.5mA at 120 volts to get to 7.5 watts, so what makes this so hard to achieve? The battery certainly has that much amps ready for draw. I put a lithium in the holder today.

?? ?? ??

you do not have 62.5mA at the pickup coil(s).
i am assuming your mA values are taken from a resistance in series with the battery and are not values taken from the pickup coil.
a step up transformer rise the voltage but lower the amps.


@all
there are 2 ways to make coils cw and ccw.
but it all end up to how you are connecting them.

if you start (under/through the center), ccw, the coil will end (through the center/on top).
if you start (on top/through the center), cw, the coil will end (through the center/under).

if you make a ccw and wind from start going left, when finished, look at that coil's end carefully.
you just have made a cw coil...
if you make a cw and wind from start going left, when finished, look at that coil's end carefully.
you just have made a ccw coil...



anyone wondered why a jt that have less coil's turns on the base's coil, seem to get more voltage out at the pickup ?   

[gadgetmall]

there are 2 ways to make coils cw and ccw.
but it all end up to how you are connecting them.

if you start (under/through the center), ccw, the coil will end (through the center/on top).
if you start (on top/through the center), cw, the coil will end (through the center/under).

if you make a ccw and wind from start going left, when finished, look at that coil's end carefully.
you just have made a cw coil...
if you make a cw and wind from start going left, when finished, look at that coil's end carefully.
you just have made a ccw coil...



anyone wondered why a jt that have less coil's turns on the base's coil, seem to get more voltage out at the pickup ?   

Sometimes but in my configuration above i am using a darlington and a cap to resonate this one and a 104 cap on the base makes this one go wild . with 2 50 turn primary jt  and 108 secondary with a bit of Jims idea on the boost output
Gadget

[hazens1]

ok here is the weird bifilar / secondary setup on a large black toroid with a know Value given to me by Greg for EB research . the number is visible . Its low perm high flux . I am getting over 1900 volts . this setup Takes the Tv out . Im on satellite and the tv is about 8 feet away .The Voltage is fluctuating as i get near the setup .I need to Box this one .. using tip121 50x2 primary CW 108 secondary (green) ccw . I tried this on two meters one ol'ed on the 750 volt scale . this one is set on the higest setting 300+ and the meter can measure 2000 volts before it Ol's

Gadget

Congrats!

Although, I would not trust the accuracy of any readings with a meter that was designed for a max of 300v. Could be off a little or alot.

Try using 2 resistors of same value in series on the output to create a voltage divider and you should get half of the 1902 volts or 951v. You could use the 750v DMM with 3 resistors in series and measure the first resistor to get 1/3 of the actual voltage which would be 634v, well within the range of the 750v meter.

[gadgetmall]

ok here is the weird bifilar / secondary setup on a large black toroid with a know Value given to me by Greg for EB research . the number is visible . Its low perm high flux . I am getting over 1900 volts . this setup Takes the Tv out . Im on satellite and the tv is about 8 feet away .The Voltage is fluctuating as i get near the setup .I need to Box this one .. using tip121 50x2 primary CW 108 secondary (green) ccw . I tried this on two meters one ol'ed on the 750 volt scale . this one is set on the higest setting 300+ and the meter can measure 2000 volts before it Ol's

Gadget

Heres more pics of a different meter . the battery low just came on . I 'll chareg it up later . It very close to accurate still . It's ol'ing on the 1000 VDC scale ... this is what I am looking for . Now i'm going to Box it and make a small circuit board to hold everything tight and start on the tuning circuit . Its not Tuned on the input as low as i'd like . 65 ma at 1.2 volts right now and the output is fluctuating wildly as i get near it . . i'll get it and i have another of these toroid s . i believe i can go higher than this but i need an HV probe to measure it now . all my meters wont go any higher . this should light 1000 + leds i hope . I also got shocked and it felt more like a 110vac shock rater than an rf HV shock. it was buzzy and knocked me back ! I will devise a separate tank for the input and hopefully stabilize it so it don't have all that radiation its putting out . Harmonics i am sure .