Protection-type current transformer power taking device for microcomputer protection

The invention discloses a protection-type current transformer power taking device for microcomputer protection. The power taking device comprises a protection CT mutual inductor, a power taking mutualinductor, a protection sampling mutual inductor, a DC voltage-stabilization power taking output circuit, a protection piezoresistor VR and a discharging tube GDT, wherein the DC voltage-stabilizationpower taking output circuit comprises a first rectification circuit, an inversion circuit and a second rectification circuit, an output end of the first rectification circuit is connected with an input end of the inversion circuit, an output end of the inversion circuit is connected with an input end of the second rectification circuit, a secondary winding of the protection CT mutual inductor, aprimary winding of the power taking mutual inductor and a primary winding of the protection sampling mutual inductor are sequentially connected in series to form a loop, and the protection piezoresistor VR, the discharging tube