Hysteresis-free electrodynamic transducer with motional impedance rectifying return circuit

The invention relates to a hysteresis-free electrodynamic transducer with a motional impedance rectifying return circuit. The electrodynamic transducer can be used for loudspeakers, earphones, sound sensors and the like, and the electrodynamic transducer comprises a movement coil, a disincentive fixed coil, a magnetic circuit and a vibration membrane. The movement coil is located in the center of the magnetic circuit and drives the vibration membrane to produce sound, the disincentive fixed coil is fixed at the appropriate position of the magnetic circuit position, and the disincentive fixed coil is in antiphase connection with the movement coil, and the electrodynamic transducer further comprises the motional impedance rectifying return circuit which is composed of an inductor, a capacitor and a resistor. The hysteresis-free electrodynamic transducer is characterized in that the motional impedance rectifying return circuit composed of the inductor, the capacitor and the resistor rectifies impedance difference of the motional impedance of the movement coil and the impedance of the disincentive fixed coil, motivation energy acted on the magnetic circuit through the movement coil and the disincentive fixed coil mutually drops to the minimum, distortion of the loudspeakers and the earphones caused by loudspeakers and earphones is reduced to the minimum, and sound distortion of the vibration membrane connected with the movement coil is reduced.