[sdiy] Bipolar comparator

[Neil Johnson]

Hi Rutger,

> I'm in search of a simple circuit that can perform comparator duties on bipolar signals,

As Olivier said what you want is a window comparator.  Here is a TI
app note showing how it works:
http://www.ti.com/lit/ug/tidub01/tidub01.pdf

Something like an LM393 dual comparator is ideal for this.  See figure
28 in: http://www.ti.com/lit/ds/symlink/lm393-n.pdf

Neil
-- 
http://www.njohnson.co.uk