Voltage stabilizer

The embodiment of the invention discloses a voltage regulator which belongs to the electronic technology field and overcomes the technical problem of the existing voltage regulator that the volume of a cabinet is too large. The voltage regulator comprises the cabinet and a voltage-regulating transformer and a compensation transformer which are arranged inside the cabinet; the cabinet comprises a soleplate, two opposite side plates and a top plate; and the voltage-regulating transformer and the compensation transformer are fixedly arranged on the same surface of the soleplate, and an electric clearance is reserved between the voltage-regulating transformer and the compensation transformer. The invention is used for reducing the volume of the voltage regulator.