Joule Ringer!

[woopy]

Wow !! Lasersaber

well done

i will have a go on this one

I looked on ebay but the only RED big and thin toroids i have found are not METGLAS.

Are you sure that the red toroid is Metglas and have you eventually a number or something helpfull in order to find this part ?

Do you think that a big ferrite torroid could work , or no chance.?

Thank's for sharing

Laurent

[T-1000]

like in this video?

http://www.youtube.com/watch?v=fIFJ5o1eqsE&feature=mfu_in_order&list=UL

There are many ways for accomplishment on same result
I would prefer AV diode plug charging capacitor (remember LEDs lighted up in exciter?) then discharge to coil over Schmitt diodes or similar components (for general idea please see http://en.wikipedia.org/wiki/Schmitt_trigger ). The secondary coil could have connected to exciter so you would have coil-capacitor there for the link to first exciter. Also there are interesting power amplification result after scalar magnetic impulse forming so you get secondary exciter there
In my team lab this is done with high voltages and stuff but should be possible also with lower energy levels.

Have fun and good new experience!

[hartiberlin]

I wrote down the circuit diagramm for this circuit and
it must be noted, that it is a Joule Thief circuit.

The primary 2 x 10 Windings coils wound in parallel
must NOT be connected to the transistor case at the top where in the pictured
the +13 Volts is stated !

The +13 Volts is only just connected to the 2 coils,
but not to the transistor case !
Very important !
Otherwise you would produce a shortcircuit of the battery !


The 750 Winding coil is just the 3rd coil as a pickup coil
which outputs the High Voltage AC.
As it is only about  2 to 4 Khz range ( estimated from
the annoying tone)
this AC voltage could be quite lethal, so avoid to touch and get shocked
by it !

Hope this helps.
Regards, Stefan.

[xee2]

This is what the circuit seems to be.

[zhak]

Video: http://youtu.be/a0ni3noZMQ4

Check here for more info:  http://www.laserhacker.com/index.html

Dip the ferrite ring in the epoxy, it will not be so loud beep to make sounds