High-speed pulse isolation and transmission circuit

The invention relates to a high-speed pulse isolation and transmission circuit. At present, the capacity of resisting electromagnetic interference of a technology for realizing electrical isolation is poorer. The circuit comprises a rectifying circuit, a constant current driving circuit, a high-speed optical coupler and a Schmidt shaping circuit, wherein the rectifying circuit comprises a full bridge rectifier consisting of four diodes and a TVS tube; the constant current driving circuit comprises two triodes, four resistors and a capacitor; the Schmidt shaping circuit comprises a Schmidt trigger and a resistor; the input end of the Schmidt trigger is connected with a collector electrode of a triode in the high-speed optical coupler; and the output end of the Schmidt trigger is used as the output end of the whole high-speed pulse isolation and transmission circuit. The circuit firstly carries out full bridge rectification on input alternating current pulse signals and then drives the high-speed optical coupler by using constant current, wherein the input drive current of the high-speed optical coupler basically keeps unchanged, thereby guaranteeing that the circuit has strong capacity of resisting disturbance, small signal transmission distortion and wide amplitude range of input pulse voltage.