Where do the extra "series cap and R and diode" go in this example?

Thx,
RR 

Robert Rolf wrote:
 
> If he want's to do it with 555, couple the short negative going pulse
> into the timing cap using a diode so that the charge is pulled off
> for every negative pulse and so the cap never reaches 2/3 Vcc to flop
> the flip flop and activate 555 reset.
> Use the negative pulse to trigger the 555 as well (sets the flip,
> clearing reset and driving output high).
> 
> If the input signal can't handle the cap loading, they he'll have
> to use the NPN to discharge the timing cap, and add another series
> cap and R & Diode to ground to differentiate the incoming pulse and
> turn the NPN on for long enough to reset the cap.
> 
> Robert


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