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This paper describes a new approach to the realization of an active 60 hz bandpass power filter. The system uses power switching to minimize attenuation losses and negative feedback to obtain narrowband filtering with a high degree of attenuation, without using large inductors and capacitors.
The dynamics of circuit interaction in terms of inrush current, stress level on components and the viability of protection and monitoring networks during the turn-on and turn-off intervals is investigated. Of special interest is the buildup and release of energy stored within the unit. Several methods for proper sequencing during the above transitions are outlined with particular focus on the behavior...
A switching converter with an LC output filter behaves as a loose-tolerance voltage-controlled current source if each switch closure is ended when switch current reaches an adjustable threshold. This converter is then combined with an external feedback to produce a precise output voltage. By generating a fixed voltage with a current source in this manner, the converter has many advantages including...