Comments on "A network theorem dual to Miller\´s theorem" by M.K. Kazimierczuk

The above-named work (ibid., vol.31, p.265-9, Nov. 1988) introduces a network theorem which is dual to Miller´s theorem, and it is applied to the analysis of the common-emitter (CE) amplifier with emitter resistor. The same material can be found in earlier textbooks, specifically in the 1972 book by J. Millman and C.C. Halkias. It is noted that section 8-11 of that book bears the heading ´Miller´s theorem and its dual´. Fig. 8-19 and its related discussion are identical to the paper´s Fig.1 and equations (1)-(8). Fig. 8-28, applying the concept to the CE amplifier stage, is equivalent to the paper´s Fig. 2. In addition, it is argued that the usefulness of the theorem in electronic circuit analysis is questionable.<>