Quick question for the builders...

Joachim Verghese jocke at netcontrol.fi
Thu Jan 11 09:42:13 CET 1996

On Wed, 10 Jan 1996 ldavid at lae.lad.gmeds.com wrote:

> O.k., I think I get it now.  You're talking about an opamp configured as
> a unity gain buffer except that the non-inverting input is tied to gnd
> (so the input voltage is 0) and there are two cathode-to-cathode zeners
> in the feedback loop; right?  

Actually, I took for granted that you would start out with an inverting
op-amp, and add the zener clipper as described in Gene Stopp's terrific

> I think they call two cathode-to-cathode zeners a "double-anode zener".  

Probably, yes, and anode-to-anode would work equally well.

BTW, I have an uuencoded GIF of the circuit, if anyone wants it 
(privately) mailed.


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