A loss free resistor (LFR) is a resistor that does not lose energy. The first implementation was due to Singer[1] and it has been implemented in various settings.[2][3][4][5][6][7]
^Singer, S, "Realization of Loss Free Resistive Elements", IEEE Transactions on Circuits and Systems, Vol. CAS-37, No. 1, pp. 54-60, January 1990.
^Robert W. Erickson, Dragan Maksimovic, Fundamentals of Power Electronics, Springer, 2nd ed. 2001.
^Erickson, R., Madigan, M., Singer, S., "Design of a simple high-power-factor rectifier based on the flyback converter", Applied Power Electronics Conference and Exposition, 1990. APEC '90.
^Singer, S, "The application of loss-free resistors in power processing circuits", IEEE Transactions on Power Electronics, (Volume:6, Issue:4) Oct 1991, pp. 595-600.
^L. Martinez-Salamero, N. Parody, Abdelali El Aroudi, "Analysis and design of a loss-free resistor based on a boost converter in PWM operation", ISCAS 2010: 2742-2745.
^A. Cid-Pastor, L. Martinez-Salamero, A. El Aroudi, R. Giral, J. Calvente, R. Leyva, "Synthesis of loss-free resistors based on sliding-mode control and its applications in power processing", Control Engineering Practice, Volume 21, Issue 5, May 2013, pp. 689–699.
^A. Marcos-Pastor, E. Vidal-Idiarte, A. Cid-Pastor, L. Martinez-Salamero, "Digital Loss-Free Resistor for power factor correction applications", Industrial Electronics Society, IECON 2013 - 39th Annual Conference of the IEEE.
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