Re: [TCML] Audiotesla MKIIc Xpression

[Joshua Johnson <jjohnson98@xxxxxxxxx>]

Hi Dr. H,

Yes this makes complete sense. I am more familiar with the terms 'pulse
rate' and 'on time' but it's all just symantics. You can call it hooha and
flimflam and long as we both understand what they mean.

I use a microprocessor based DRSSTC controller with a MIDI input
and find real-time ctonrol of the pulse rate and duty cycle just a matter of
how one writes the code.

Is this your method?

Love the videos.

Thanks,
Josh



On Thu, Jul 16, 2009 at 4:15 PM, Dr.Hankenstein <
dr.hankenstein@xxxxxxxxxxxxx> wrote:

> Josh,
>
> Bit rate on a DRSSTC usually refers to the number of times per second
> the coil is triggered, i.e.: a bit rate of say 250BBS would sound like a
> 250 hertz audio tone. The duration, on the other hand, usually refers to
> the output transistors "on time" in microseconds. Normally, the longer
> the duration, the more power can be transferred from the primary to the
> secondary. Changing the duration as expressed above will cause the spark
> to be longer or shorter. Perhaps the term "duration" as you mentioned
> would better be understood as "run time". One of our runs was estimated
> to be in excess of an hour with short rests in between (changing songs!)
>
> Hope that makes more sense.
>
> Regards,
> Dr.H
>
> -----Original Message-----
> From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
> Behalf Of Joshua Johnson
> Sent: Thursday, July 16, 2009 10:25 AM
> To: Tesla Coil Mailing List
>  Subject: Re: [TCML] Audiotesla MKIIc Xpression
>
> Dr. H
> Could you elaborate a bit more on DRSSTC 'bit-rate' and 'duration'?
> These term are a bit vauge and could me a lot of things.
> Like, the 'duration' of my DRSSTC was about 5 minutes then the cap and
> IGBTs
> exploded.  =)
>
> Thanks,
> Josh
>
> On Wed, Jul 15, 2009 at 7:48 PM, Dr.Hankenstein <
> dr.hankenstein@xxxxxxxxxxxxx> wrote:
>
> > Good day fellow coilers!
> >
> > Last weekend Dr. Spark and I performed a successful audition of the
> new
> > Audiotesla MKIIc Xpression DRSSTC Controller. We are effectively able
> to
> > control the bit-rate and duration of a DRSSTC Tesla Coil in real time,
> > giving the music more expression.
> >
> > You can view the link at:
> > http://www.youtube.com/watch?v=zhu03EdcJSI&feature=channel
> >
> > Hope you enjoy!
> >
> > Dr. Hankenstein
> >
> > _______________________________________________
> > 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
>
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla