Patent Document ID: 8172742
Application ID: 11917732
Patent Flag: 1

Claim One:
1. A magnetic stimulation circuit for central nervous system, comprising: a control circuit, a drive power supply circuit and coils that are sequentially connected, wherein the drive power supply circuit comprises a drive circuit, a main circuit, and a detection circuit for detecting the voltage and current values in the main circuit, both the drive circuit and the detection circuit are connected to the control circuit and the main circuit respectively, and the coils are connected to the main circuit, wherein the main circuit comprises at least one insulated gate bipolar transistor and the control circuit generates a PWM signal which is used by the drive circuit to drive the insulated gate bipolar transistor in the main circuit to output a time-variant current to the coils which then generate a desired time-variant magnetic field in an objective region, wherein the objective region is an entire brain, the magnetic induction of the time-variant magnetic field has a peak value smaller than 0.1 T, the magnetic induction of the time-variant magnetic field has a gradient smaller than 100 Gs/cm and the time-variant magnetic field comprises intra-train frequency and inter-train frequency.