Joule Thief

[nievesoliveras]

mmm
Here is a link to the astable multivibrator.
http://www.play-hookey.com/digital/experiments/rtl_astable.html
It is a tutorial so you make it step by step on the diagram. There are others, but I like to get in there and do it, so this is like that but with no parts to drop!
It is a good site like that. good name too!

jeanna

Thank you @jeanna!
I will study it. By the way on an @pese's post, he states that the two caps polarity is wrong on that circuit. I will have to make tests to check that.

@ Jesus:

Nice circuit there.  With what you know now I'll bet you can run a JT from it easily.  I think it was you that posted about the stores switching out the diodes on folks? (I wish we could go back a little more while posting so we can answer everyone)  Well, I ordered 50 of the 1N34 germanium and they had better be the 1N34's or I am going to call the folks I ordered from and send them back.  Thanks for the warning.

I would like that those words about running a jt from that energy from the air circuit were true. Something is holding me back and I cant get the thing to work for me.

@electricme

Be glad even though your country is flooded and on fire. Be glad because the lord loves you and have you untouched by all the event happening. I mean untouched physicaly.

@all

By the way, I have a solar panel under my desk lamp charging the batteries while I read your posts. The batteries lose the charge the first time by themselves but the second time it seems that they hold it.
The garden solar panels from allelectronics when under a 40 watts bulb gives on my desk 3.45 volts without any battery connected to it.

Jesus

[innovation_station]

i like that schem but we need 2 of them   we could call that a npn unit ..... 

need the other for the other end 

are those 3055 ?

i have a SPECIAL TRANSFORMER I FOUND    in an old microwave it is bifillar wound ....  both primary and secondary ....

maybe i will drop this curcuit on the mot   this is a rare mot..... only one i have ever seen   i have taken apart  over 30 microwaves ...

also i have a big high freq rectifier  ..... 

maybe i will get to that ... soon 

ist

[Koen1]

What method do you guys use to pull components off old
circuit boards?
I have used a soldering iron and a pair of fine pliers to carefully and
patiently pull the components from the board, but half the time that
is not enough to get them out properly... it often happens that the solder
on one of the connectors has already cooled and solidified again
before I could pull the thing out.
Is there an easier and more foolproof way to do it?

[Goat]

@ Koen1

I use a solder sucker (check Google images) along with a chisel tip solder iron.  I've heard that there is a solder sucker iron (2 in 1) but never seen one myself.

Regards,
Paul

[Thaelin]

   Its called a de-soldering station. It has a hollow tip and has suction via a button
to extract the molten solder. This is caught in a filter that you clean off periodically.
I have used many of them. Nice, but spendy and requires a vacuum.

thaelin