a power transformer

Abstract

The invention discloses a power transformer. The power transformer comprises a shell, a detection module and a transformer main body; the detection module is arranged in a chamber of the shell, and is provided with a converting unit and a judgment warning unit; the converting unit is capable of automatically identifying an input voltage and sending out a voltage converting instruction; according to an output voltage, the judgment warning unit performs a high-frequency flashing alarm if the judgment warning unit judges an overvoltage of the input voltage occurs, or performs a low-frequency flashing alarm if the judgment warning unit judges an under voltage of the input voltage occurs; the transformer main body is arranged in the chamber of the shell to have an electricity or signal connection with the detection module, and is used for executing the converting instrument sent by the converting unit, so as to convert the voltage. The power transformer identifies and judges the input voltage through the detection module connected with the transformer main body, so as to automatically and intelligently convert the high voltage and the low voltage of the power transformer, so that electric appliances are suitable for domestic and overseas voltage standards; and moreover, the detection module performs the high-frequency flashing alarm if the overvoltage of the input voltage occurs, or performs a low-frequency flashing alarm if the under voltage of the input voltage occurs, so that a user can timely find whether the input voltage of the power transformer is the standard rated input voltage of the power transformer or not.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to a power transformer. Background technique [0002] In recent years, with the rise of purchasing methods such as overseas online shopping and tourism shopping, more and more foreign electrical appliances have entered the country, but the voltage of most of the electrical appliances purchased from abroad does not meet the voltage standards of my country, or they are traveling abroad. Or when you are on a business trip, the voltage of the domestic electrical appliances you carry with you may be different from the foreign voltage. If you directly connect the foreign electrical appliances to the power supply in my country or connect the domestic electrical appliances to the foreign power supply, the electrical appliances may not work normally or even burn out. [0003] For this reason, the prior art such as the Chinese patent document CN205230786U discloses a power transformer wit...

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Problems solved by technology

[0004] However, this prior art still cannot solve the problem that domestic and foreign electrical appliances cannot be used universally due to different voltage standards in actual use. The reason is that the toroidal transformer of this prior art can only realize high voltage-low voltage conversion or low Voltage-to-high voltage conversion, and compared with domestic and foreign environments, most foreign voltage standards are different from domestic voltage standards, whether high or low, if used improperly in the process of artificially choosing to use a power transformer, it will be counterproductive Effect

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