Simple anti-theft device of transformer

The invention discloses a simple anti-theft device of a transformer. An alarm circuit comprises a second resistor R2, a first loud speaker Y1 and a first light-emitting diode. After the second resistor R2 and the first light-emitting diode are in series connection, the second resistor R2 is in parallel connection with the first louder speaker Y1 to form a first series-parallel connection branch, the positive pole of the first series-parallel connection branch is connected with the positive pole of a rechargeable battery E, one end of a normally-opened output switch KJ of a first relay J1 is connected with the negative pole of the rechargeable battery E, and the other end of the normally-opened output switch KJ of the first relay J1 is connected with the negative pole of the first series-parallel connection branch. The above content is the further detailed description to the simple anti-theft device combining a specific optimization mode of execution, the detailed mode of execution, which can not identify the simple anti-theft device of the transformer can only be limited in the description. For common technicists in the technical field of the simple anti-theft device, other obtained modes of execution, which are not separated from the technical scheme, should all be included in the protecting range of the simple anti-theft device of the transformer.