Joule Thief

[nievesoliveras]

...
@jesus,
What do you think about making your self charging arrangements connect to the negative side of the battery, rather than the positive? (I mean between the Emitter and the battery?)

thank you,

jeanna

I have been having troubles with my charger. It does charge one day and then it does not charge the next day.

About the negative configuration of the same thing I need to give it a thought in order to change the whole configuration to the negative side.

Who knows, it maybe works better on the negative side.

Jesus

[xee2]

@ jeanna

@xee2
BTW, I did put the other wire of the secondary into the neg side of the battery when starting the fluorescent tube.
I measured the amps draw, and it went down at the times I had the connection to secondary made.
The difference was small, like 1mA or 0.1mA but it was consistent.
The same thing happened when I touched the secondary to the pos side but about half as much.

I am not sure why, but adding this connection seems to sometimes make the tube light when it will not otherwise.

[xee2]

Calculations showed that 60 turns should light tube so I decided to check. It does.

Not recommended, this is probably about the minimum number of turns to light a tube with 200 ohm base resistor. Therefore, performance is marginal unless tube is run at higher current.

[jeanna]

@ jeanna

I am not sure why, but adding this connection seems to sometimes make the tube light when it will not otherwise.

I tried it but it didn't work for me, but the magnet trick worked fine. I can remove the magnet once the light is fully lit which is 30 seconds and already warmer.

I am glad you discovered it, because it shows that it saves a little amps draw from the battery, which is always cool.

jeanna

[electricme]

@Gadget,
Hello Al, mate, I have been very worried for you.
Hope everything is OK.

Hi all . Been to dang Busy being Re tired  . I have a lot of Jt thread reading . I got another self runner !! Yes i know . who cares . Me! Its easier than you can imagine . Just a different coil design!!!!!!  Well hope everything is going good . i'll put my 2 cent in when i can . I got a Scope Common . a Digital Storage Scope!! hatachi 200MZH so i'll be in the game again shortly and also be able to hook it to my computer .. I stole it with a sniper from ebay for 89 bucks shipping included . Hmmm . maybe a 3000 dollar scope ? Ok Must catch up . !!
Gadget

I glad you have a scope at long last, you will enjoy it, what an excellent find, well done Al

jim

PS I got to get back 2 my bedini soon, I discovered something, all the liturature says you get 1 spike with a 2N3055 switching transistor, haaaaaa ha, I can get 2 spikes, the trick is to slow it down, I addded a 5K pot, then reduce the power to the Trs Base, until the 2nd spike appears, as at each pass of the magnet.
I think to get a heep of spikes, use a reed switch, but I not tried that.