[sdiy] Is this a comparator?

[Seb Francis]

Needham, Alan wrote:
> Now this IS a comparator ...
> strange choice of output though 1v ?
>
> An OpAmp with no feedback (open-loop gain of maybe 1000 ?),
> one signal to each input, potential divider on output to give
> 0v or 1v.
> If the two inputs are the same as each other the output could
> go crazy for a while though !
>   

Perhaps a very small amount (very large resistor) of positive feedback 
would stop any crazyness in such a case?

Seb