Patent ID: 9257225
Filing Date: 2016-02-09
CPC Classification: H01F

Claim Text:
1. A species of electric transformer, termed LC combined transformer, used for transferring electric signal or energy of periodic sine wave, and proportionally altering the amplitude(s)/magnitude(s) of current or/and voltage of the periodic sine wave between input and output ports when neglecting power loss, being a current type unity-coupled mutual capacitor characterized as current transformation, or a voltage type unity-coupled mutual capacitor characterized as voltage transformation, or a circuit of LC combined transformer in cascade connection of an ideal transformer plus one current type unity-coupled mutual capacitor or two voltage type unity-coupled mutual capacitors, comprising said current type unity-coupled mutual capacitor consisting of three linear capacitances in delta (Δ) configuration with a sum of the reciprocals of said three capacitances being zero; said voltage type unity-coupled mutual capacitor consisting of three linear capacitances in wye (Y) configuration with a sum of said three capacitances being zero; either of said unity-coupled mutual capacitors including negative capacitance(s) which may be realized through negative impedance converter(s) (NIC) or by employing linear inductor(s) when operating at a constant frequency; said circuit of LC combined transformer comprising current transformation-A type LC combined transformer consisting of a mutual inductor (Tr), an inductor (Lb) and a capacitor (Cm), if designating the primary winding terminals of said mutual inductor (Tr) as the input port of said current transformation-A type LC combined transformer, said mutual inductor (Tr)'s secondary winding and said inductor (Lb) and said capacitor (Cm) being connected in series to form a closed loop before designating the two terminals of said capacitor (Cm) as the output port; said current transformation-A type LC combined transformer presenting a ratio of current transformation between ports as under the prerequisite of the parameters satisfying ω 2 C m (L 2 +L b )=1; said circuit of LC combined transformer comprising current transformation-B type LC combined transformer consisting of a mutual inductor (Tr) and two capacitors (Cb) and (Cm), if designating the primary winding terminals of said mutual inductor (Tr) as the input port of said current transformation-B type LC combined transformer, said mutual inductor (Tr)'s secondary winding and said capacitors (Cb) and (Cm) being connected in series to form a closed loop before designating the two terminals of said capacitor (Cm) as the output port; said current transformation-B type LC combined transformer presenting a ratio of current transformation between ports as under the prerequisite of the parameters satisfying said circuit of LC combined transformer comprising in-phase mode voltage transformation type LC combined transformer consisting of a mutual inductor (Tr), an inductor (La), and two capacitors (Cb) and (Cm), if taking one end of said inductor (La) as the input terminal, the other end is connected with one end of said capacitor (Cb) and also one end of said capacitor (Cm), the other end of said capacitor (Cb) connected to one terminal of the primary winding of said mutual inductor (Tr), the other end of said capacitor (Cm) connected to the other terminal of said primary winding with this joint taken as the common terminal, then designating said input terminal and said common terminal as the input port of said in-phase mode voltage transformation type LC combined transformer, as well as designating the two terminals of the secondary winding of said mutual inductor (Tr) as the output port; said in-phase mode voltage transformation type LC combined transformer presenting a ratio of voltage transformation between ports as under the prerequisite of its parameters satisfying ω 2 L a (C b1 +C m )=1 and ω 2 (1−k 2 )L 1 C b2 =1; said circuit of LC combined transformer comprising anti-phase mode voltage transformation type LC combined transformer consisting of a mutual inductor (Tr), two inductors (La) and (Lb), and two capacitors (Cb) and (Cm), if taking one end of said inductor (La) as the input terminal, the other end is connected with one end of said inductor (Lb) and also one end of said capacitor (Cm), the other end of said inductor (Lb) connected to one end of said capacitor (Cb), the other end of said capacitor (Cb) connected to one terminal of the primary winding of said mutual inductor (Tr), the other end of said capacitor (Cm) connected to the other terminal of said primary winding with this joint taken as the common terminal, then designating said input terminal and said common terminal as the input port of said anti-phase mode voltage transformation type LC combined transformer, as well as designating the two terminals of the secondary winding of said mutual inductor (Tr) as the output port; said anti-phase mode voltage transformation type LC combined transformer presenting a ratio of voltage transformation between ports as under the prerequisite of its parameters satisfying and ω 2 (1−k 2 )L 1 C b =1; for all above formulas where (I and (ω) is the electric angular frequency of the periodic sine wave applied to this transformer.