Joule Thief

[stprue]

101uH between emitter wires and the - rail of the input.

[Mk1]

@all

I boosted my output by raising consumption to 200 mili , yes 200 .

I know its high but i have fun .

This bulb is 6v 250mili it is on the secondary ...

I have replaced the resistor by a 4007 diode.

I got 67 volts instead of 30 v and draw went up to 200 mili.

Not that good , but i am aiming for the highest output not the lowest draw.

Mark

[jonnydavro]

@stprue.Nice experiments you are doing with the simple sec and koolers jt.I will have to try that.
You asked me about the wireless reciever circuit i use so i include some pics and the simple sec circuit for Altrez.
This circuit works well as it is hopefully on the same frequency as the transmitter.I use 9 blue 8000mcd leds and the 9 leds will light at 1m using the 1.5v phone charger.The most important thing with this reciever is the virtual ground of the negative of the last led in the string.This should be an aluminium baking tray or a large metal mass and if you can put it on the floor it works even better.
Hope this helps.Jonny

[altrez]

@stprue.Nice experiments you are doing with the simple sec and koolers jt.I will have to try that.
You asked me about the wireless reciever circuit i use so i include some pics and the simple sec circuit for Altrez.
This circuit works well as it is hopefully on the same frequency as the transmitter.I use 9 blue 8000mcd leds and the 9 leds will light at 1m using the 1.5v phone charger.The most important thing with this reciever is the virtual ground of the negative of the last led in the string.This should be an aluminium baking tray or a large metal mass and if you can put it on the floor it works even better.
Hope this helps.Jonny

Jonny,

Thank you so much for posting that!!! I am a bit confused by the receiver?

-Altrez

[jonnydavro]

Hi Altrez.When you get a trigger coil,sometimes they will have three pins and sometimes four.Only three pins are used and if you get one with four it is just to help with mounting.
Is all you do is connect a croc lead to a metal bowl or tray and connect the end of the croc lead to one end of the primary coil of the trigger transformer.Do the same with the other end of the primary.
Get another croc lead and attach that to the third pin which is the hv output and feed that into an avramenko plug but the most important thing is to use a good virtual gound on the last leds negative leg.
The idea behind it is the simple sec is acting as a transmitter and to recieve the most energy,both transmitter and reciever have to be tuned to the same frequency and as both transmitting coils and recieving coils are the same,they should be fairly close.
Xee2 may have some ideas on how we can improove on this as  he has experience in radio but it is quite a good place to start.Jonny.