A feedback amplifier is one in which a portion of the output is fed back to the system input where it is combined with the input signal. The answer to this important question is obscured by the fact that, once the new circuit shape is known, it is possible to give an account of the reasoning that might have led to this new idea. Experimental work 2. These comparators are represented by simple operational amplifier symbols in Fig. This amplitude is not A but, from equation 3.
nest...