DC-TO-AC VOLTAGE CHANGER Russian patent published in 2003 - IPC

FIELD: measurement technology; radio engineering and automation; measuring and tracking systems. SUBSTANCE: voltage changer incorporating negative and positive feedback circuits and amplifiers 3, 4 is provided with newly introduced control unit 11 and isolating unit which is inserted in positive feedback circuit and has two breaking switches 5, 10, two making switches 7, 8, and two memory devices 6, 9. When 1/T<f_R, where T is commutation period of switches, f_R is frequency at which voltage changer is most close to loss of stability, transfer ratio K₂ of positive feedback circuit in vicinity of frequency f_R is close to or equals zero, that is, positive feedback does not actually produce any impact on voltage changer stability. EFFECT: enhanced stability of voltage changer. 1 cl, 1 dwg