Computer system engineering here. I studied the adder, digital logics stuff u guys were talking about last semester. but now forgotten everything. haha.. gotta search for the notes to refresh everything.

btw, anyone familiars with discreet signal processing?

This post has been edited by nerd nation: Oct 12 2005, 10:28 PM

Jalan Pasar?

The so called negative resistance does exist. It is used in oscillator circuits to cancel out the damping resistance of a tuned circuit to create oscillations. When a tuned circuit is excited by a pulse, it will ring at the resonant frequency. the circuit resistance will, however, cause a rapid damping of these oscillations. This is where negative resistance comes into play. To overcome the problem we need a device that has negative resistance to cancel out the circuit resistance. One such device is the Gunn diode. This diode exhibits higher energy states for which the current carriers have lower mobility and this will cause negative resistance under suitable bias conditions.

Another way of generating negative resistance is by using a carefully biased FET. I'm not quite familiar with this one though.

This post has been edited by nerd nation: May 11 2006, 09:56 PM