Article: Feedback models reduce op-amp circuits to voltage dividers.

Article: Circuit option boost photodiode bandwidth. (EDN-Design Feature ...
EDN;  May 21, 1992 ;     700+ words ... ... unkeyable][R.sub.L]([C.sub.D]+[C.sub.ID]+[C.sub.ICM]+[C.sub.L]). Bode analysis with this feedback factor defines the optimum value of [C.sub.L] and the resulting bandwidth (Ref 1). For 45[degrees] of ...

Article: Op amps turn voltage references into current sources. (Precision ...
EDN;  April 26, 1990 ;     700+ words ... ... usefulness. You must return [Z.sub.L] to the virtual ground ... applications. Including [Z.sub.L] in the feedback path ... frequency stability because [Z.sub.L] is a primary determinant of the op amp's feedback factor. Because current references ...

Article: Generalized op-amp model simplifies analysis of complex feedback ...
EDN;  April 15, 1993 ;     700+ words ... ... feedback to IC[sub.1's] inverting ... 0. The net feedback factor is [beta ... beta +] = R[sub. 2/2R[sub ... loop gain, / A[sub. 1]/, and the inverse of the net feedback factor, 1/[beta ...

Article: Op-amp bandwidth and accuracy.(Technology Tutorial)(Tutorial)
EDN;  February 17, 2000 ;     700+ words ... ... E is the error, and [Beta] is the feedback factor: E/[V.sub.IN] = 1/1 + A[Beta], and ... equals a([R.sub.F]/([R.sub.F] + [R.sub.G])).The feedback factor in amplifier circuits is passive and ...

Article: Comments on "the Iris Hypothesis: A negative or positive cloud ...
Journal of Climate;  September 15, 2002 ;     700+ words ... ... a threshold temperature T^sub 11^ of 260 K to infer high-level clouds, where T^sub 11^ is the brightness temperature ... albedo of those pixels with T^sub 11^, of less than 260 K ... their Table 1. The positive feedback factor, albeit small, as calculated ...

Article: Bandpass filter features adjustable Q and constant maximum ...
EDN;  March 3, 2005 ;     700+ words ... ... V.sub.OUT](s)/[V.sub.IN](s)]= [4RC(1-m)s/[(RCs).sub.2]+ 4RC(1-m)s+1], where m represents the twin-T cell's feedback factor. If you designate [R.sub.XY] as the resistance potentiometer ...

Article: Phase compensation extends op amp stability and speed. (Design ...
EDN;  September 16, 1991 ;     700+ words ... ... frequency stability. Load [C.sub.L] reacts with the op amp ... loop output resistance ([R.sub.o]) to produce an added ... oscillation. Adding the inverse feedback-factor curve, 1/[beta], to the ... case, a second pole at [f.sub.p]=1/2[omicron ...