RE: SSTC - experiments

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Steven Ward" <srward16-at-hotmail-dot-com> 

Well Dave,

the only thing we must achieve is pulse-width modulating a square wave 
(coming from a feedback source).  I havent looked into any ICs about doing 
this, but it should be possible.  A self-resonant audio based SSTC would be 
exceptional i think.  When the SSTC is perfectly in tune, it produces very 
little extra noises.  Maybe i will browse around the TI website and see if 
i can find a chip that will allow this to happen, it would definately be 
cool ;D  Also, i never like the idea of losing tune just from moving around 
the coil.

Steve


>From: "Tesla list" <tesla-at-pupman-dot-com>
>To: tesla-at-pupman-dot-com
>Subject: RE: SSTC - experiments
>Date: Sun, 11 Jan 2004 15:35:26 -0700
>
>Original poster: "David Trimmell" <humanb-at-chaoticuniverse-dot-com>
>
>Steve, why wouldn't a "self-resonant" system work for a audio modulated
>SSTC? I think that a resonance "correction" circuit could be quite
>useful. But I am not sure how to do it. The TL494 seems to be a less
>then perfect IC for modulation, but Dan has proven it to be more than
>capable! I wonder if it would be possible to do modulation with the
>IR2153D IC that Dave Sharpe has been looking into? BTW, where to find
>this IC? I have checked the usual suspects, but haven't found... What
>are folk using to design their boards, Eagle? But finding the right
>component list is troublesome! Arggh! I wish I actually had some time to
>spend on this. My desire is to make my own board, starting with a vary
>simple "half-bridge" circuit. The challenge of solid state is a very
>luring one that makes VTTC look like child's play! Absolutely no room
>quick lash-up's Those IC's are truly infant weak!
>
>Regards,
>
>David Trimmell
>
>-----Original Message-----
>From: Tesla list [mailto:tesla-at-pupman-dot-com]
>Sent: Saturday, January 10, 2004 6:39 PM
>To: tesla-at-pupman-dot-com
>Subject: RE: SSTC - experiments
>
>Original poster: "Steven Ward" <srward16-at-hotmail-dot-com>
>
>Ah, but it works for ANY input.  All of the SSTCs on my site are
>self-resonant, including the twins.  The only one that isnt
>self-resonant
>is of course the plasmasonic, but that doesnt really need to be.  And
>actually, if you look at what the self-resonant designs need to work,
>its
>not much more than a good comparator and sometimes a buffer (i like to
>use
>logic inverters) added into the system.  In my opinion its well worth
>it.
>
>Steve
>