Joule Thief

[PARAV]

@ altrez

Maybe a pictorial will help.

Xee2

Wow, great job , your awesome. Those schematics are a tremendous h.elp

Parav

[IotaYodi]

The coil primary winding contains 100 to 150 turns of heavy copper wire. This wire must be insulated so that the voltage does not jump from loop to loop, shorting it out.  If this happened, it could not create the primary magnetic field that is required. The primary circuit wire goes into the coil through the positive terminal, loops around the primary windings, then exits through the negative terminal.

The coil secondary winding circuit contains 15,000 to 30,000 turns of fine copper wire, which also must be insulated from each other.  The secondary windings sit inside the loops of the primary windings.  To further increase the coils magnetic field the windings are wrapped around a soft iron core. To withstand the heat of the current flow, the coil is filled with oil which helps keep it cool.

As current flows through the coil a strong magnetic field is built up. When the current is shut off, the collapse of this magnetic field to the secondary windings induces a high voltage which is released through the large center terminal.  This voltage is then directed to the spark plugs through the distributor. It transforms low voltage to high voltage.

[jeanna]

Thank you IotaYodi,

You know that is what I thought it was. Someone posted the pic I will post below so you and anyone else who is interested can see what was so confusing.

I appreciate your help and a good picture goes a long way.

I wonder what that other picture that shows them connected is all about??

Thank you again,

jeanna

Edit
Since this is the beginning of a new page even a long page, I will post the correct diagram for an ignition coil at this time too.

[Pirate88179]

@ All:

Slightly off-topic but maybe not really since we are all interested in energy.  I just got my electric bill for the month of July here in Kentucky and it was $31.00.  Now, this includes taxes, both state and local, AND a mandatory $5.00 recycling fee charge.  I think that is pretty good!  I did the same energy management type stuff at my other house and after 6 months, the electric company came out and replaced my meter.  When I asked why they were doing that, they said it was because the last folks that owned it had electric bills/power usage 250% over mine so the meter must be defective. Funny thing, my bills stayed at the same low levels.

When I moved in here 7 years ago, (small apartment) I got an electric power usage history from the company that showed the bills averaged $80/month year round.  That was long before the recycling fee and at least 4 tax increases.  My goal is to have them come out here and replace my meter once again.  When you light your home with leds from dead batteries, it uses less power, ha ha.

Just wanted to share this with you folks.

Bill

[resonanceman]

I did  not have much time for  expermenting  today

I did  have enough time to read a few posts and  try one  thing .

I  tried    hooking  an ignition coil  in series   to my secondary to make flyback

It  worked  pretty  good  connecting  with the  primary  terminals
I got  a small  increase  in voltage .

I   do not know  where to  connect the  other  leg for  the primary .
I tried  connecting it to my Jesus charger  an the   primary terminals .....I got less than  2V


Then I tried connecting   it using  one  primary  terminal  and  the  secondary tower .
My  voltage  jumped  from  Just  over 100V  ( under a load of 90 LEDs )   to 150V .
That is  by far the biggest  jump  I have ever seen   from adding one inductor .

gary

Note
to save time I just inserted  the  ignition  coil in  a flyback/feedback network  I had set up .