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Re: Schmitt trigger for feedback SSTCs
Original poster: Mr Gregory Peters <s371034-at-student.uq.edu.au>
Hmmm, thanks for that link. Looks promising.
Department of Earth Sciences,
University of Queensland, Australia
Phone: 0402 841 677
----- Original Message -----
From: Tesla list <tesla-at-pupman-dot-com>
Date: Saturday, May 1, 2004 2:12 pm
Subject: Re: Schmitt trigger for feedback SSTCs
> Original poster: John Keith <jskeith-at-interaccess-dot-com>
> Hi Greg, all...
> You might want to look at the TMS2815 from TI ( www.ti-dot-com ).
> 4 to 14V
> operating voltage, 2A peak output current, dual-NAND configuration
> in an
> 8-pin package. Kind of like a 4093 with b-at-!!s. More expensive than
> a 555,
> about $2.00US, but quite versatile and made for the purpose of
> driving FETs.
> John Keith
> ----- Original Message -----
> From: "Tesla list" <tesla-at-pupman-dot-com>
> To: <tesla-at-pupman-dot-com>
> Sent: Thursday, April 29, 2004 9:56 AM
> Subject: Schmitt trigger for feedback SSTCs
> > Original poster: Mr Gregory Peters <s371034-at-student.uq.edu.au>
> > Hello all,
> > Been looking at common, cheap schmitt triggers used for
> feedback SSTCs,
> > have noted that they:
> > a) generally only run on 5v
> > b) Can only supply a few tens of mA output
> > Anyway I found this circuit at:
> > http://www.uoguelph.ca/~antoon/gadgets/555/555.html
> > Go to the "example circuits" section, figure 9.
> > It is a 555 timer being used as a schmitt trigger to clean up
> dirty wave
> > inputs. Seems this would be useful to us SSTCers, as it is
> cheap, can run
> > off 12v, and can supply up to 200mA output current.
> > Is there any reason why this couldn't be used in a feedback
> SSTC system?
> > Cheers,
> > Greg Peters
> > Department of Earth Sciences,
> > University of Queensland, Australia
> > Phone: 0402 841 677
> > http://www.geocities-dot-com/gregjpeters