Re: [TCML] "Wall Wart" Transformers

[John Forcina <forcijo10@xxxxxxxxx>]

Guys, i just want to wrap up this thread because it's really going nowere
right now.  A "wall wart" will clearly* NOT* work in reverse as a step up
transformer so there is no real reason to continue discussing this.  On the
other side,  A dc flyback driven with a zvs driver will me much more
effective and you will be able to push much more power through it.  I also
dont recommend running it at 16khz because that is in the audible range and
the hi pitch whine will drive you crazy.  They should be ran from
25khz-100khz.  What he meant by running your coil on dc is, most all flyback
transformers manufactured after 1970 are internally half wave rectafied
giving a dc output.  Then you use the dc high voltage to charge the tank
circuit in your tesla coil.

On Wed, Mar 25, 2009 at 9:55 AM, Skip Malley <skip@xxxxxxxxxxxxxxx> wrote:

> A TV flyback transformer can work, but it doesn't run on DC.  You would
> still need the appropriate driver circuitry to drive it correctly at about
> 16KHz.
>
> Skip
>
>
> At 07:45 AM 3/25/2009, you wrote:
>
>  Have you considered using a flyback transformer with a high power ZVS
>> driver? They are specifically designed for the high voltage and will not
>> self-destruct unless pushed really hard... Since most wall warts are only
>> rated at about 10 - 20w, it would seem a ZVS flyback would be better
>> anyway since you can put hundreds of watts through them without the core
>> saturating. All you really need is to find a rectified-but-not-multiplied
>> xfrmr (check at the local trash tip for old tv's) and run your coil on DC.
>>
>> ben.
>>
>> >Sorry to burst your bubble, but no this will NOT work. These transformers
>> >can't put up with that kind of voltage. These transformers are also far
>> too
>> >small to provide a usable amount of power.
>> >
>> >On Mon, Mar 23, 2009 at 19:53, Leonidas Tolias <ltolias@xxxxxxxxxxx>
>> wrote:
>> >
>> >> I had a few of those big black "Wall Wart" transformers lying around. i
>> >> pulled some apart and noticed that they have some nice looking
>> >transformers
>> >> inside them.
>>
>> -SNIP-
>> _______________________________________________
>> Tesla mailing list
>> Tesla@xxxxxxxxxxxxxx
>> http://www.pupman.com/mailman/listinfo/tesla
>>
>
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
>
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla