Joule Thief

[crowclaw]

Here is my demo board. (3002)  I also now have three A 1V/1uA Ext R&C Silicon Oscillator/Timer TDFN22EP-8 (from packing list)

I do not see a chip on my board or any way to mount the ones sent.  Does anyone know?  I feel like an idiot.

Bill


PS  The packing list calls each of those 3 items a quantity of 3 each for a total of 9.  Do they come apart or something?
       STPrue, did you get something that looks like these things?

Hi Bill, these are SMD devices (surface mount devices) and are normally supplied on production run spools similar to the old 7" reel to reel tape recorder reels. As samples they have been cut into small strips. This technique is modern day high speed-high mass production of course. The circuit boards are first solder pasted using a stencil, next a robot 'pick and place' machine selects the smd components from a programmed menu and places each device onto the circuit board. Later the boards are fed  into a multi heated oven where the paste melts to form the finished soldered joints. The whole process is vertually automatic turning out several thousand completed boards per hour. Very small high density circuit boards now form the basis of nearly all electronic assemblies... mobile phones being typical. You can work with many SMD components though using a miniature tipped iron, fine grade solder and a bottle of liquid flux!  Lastly worth mentioning, when ordering sample parts... check if they can supply IC's as conventional dip leaded devices rather than surface mount when requesting samples, and always state for prototype project development when ordering. Kind regards Merv

[Pirate88179]

Bill, Gadget, Brad and Crowclaw:

Thanks guys.  So, U1 is the chip.  I am wondering why they sent me these other chips then?  I guess they have different values and such but, there is no way I am removing the one from the board, ha ha.  I am pretty good at soldering under a microscope but man, this is a whole new animal to me.  Ah, progress....I guess it pays to keep up with it.  I knew you guys on here would know all about this.

Thanks again all.

Bill

[gadgetmall]

Bill, Gadget, Brad and Crowclaw:

Thanks guys.  So, U1 is the chip.  I am wondering why they sent me these other chips then?  I guess they have different values and such but, there is no way I am removing the one from the board, ha ha.  I am pretty good at soldering under a microscope but man, this is a whole new animal to me.  Ah, progress....I guess it pays to keep up with it.  I knew you guys on here would know all about this.

Thanks again all.

Bill

Hi Bill . yes they also sent me 9 chips . three are 4 times bigger .They do make a SMD to Dip adapter if we ever need to put those chips to use but heck looks like a go with what we got mounted and well the cost ,Nil.. Lets see where this goes .I'll start playing around with them feeding signals in the base of a running  Jt and then we will go from there .. That is where our free energy will come from . A shot in the dark. Also a good book to have is Practical oscillator handbook .. get it here . http://dc357.4shared.com/download/oMu6hBSS/practical_oscillator_handbook_.pdf?tsid=20120914-011955-27d17b



Al

[Pirate88179]

Al:

Thanks.  I just downloaded that book and I will read it.  I have an old Jeanna's circuit 3.5" toroid already wound in tr-filar configuration.  I would like to hook the board up to that and play with the parameters a bit.  This should be fun.

Bill

***EDIT***   Wow!  I just started reading that handbook and am on page 14 of 256 pages!!!!  Just the table of contents made my head spin.  That book is an excellent find Al....way to go.

[gadgetmall]

Hi Gang  while i am doing 5 different free energy experiments i thought i would share my 1/2 microamp led jt circuit .

Another  accident circuit except this time i built many of them . This one with run a transistor jt with  just dissimilar  metals in your hands . thats right free light from your hands . I tested this on a tiny crystal cell i made from a 22 bullet  at 1.020 vdc with just 1 tiny bit of current 1ua  and  also holding a piece of magnesium between my fingers and the alligator clips of the input . It will light up dimly or blink bright but shows how to harness electricity that has almost zero current .  it will light to 1/2 of a micro amp. Some one asked how i did it and so i drew it up from one i made .
You have to understand the things i make i slap together and hardly never write any directions down as once i learn it i just do it . this time i think you will like this one. I build it years ago and threw it in my box full of jt parts and just found it recently . you make it with  the parts you got already . The bullet instructions are in ibpointless crystal cell thread .
gadget