Display apparatus

A display apparatus, comprising:

• a transformer, a voltage conversion module, a feedback module, and a light string group;
• wherein
• the voltage conversion module corresponds one-to-one with the light string group, and the light string group comprises a first light string and a second light string;
• a first secondary coil and a second secondary coil of the transformer are coupled with a primary coil of the transformer;
• the first secondary coil is configured to output a first voltage according to a power received by the primary coil;
• the second secondary coil is configured to output a second voltage from both ends of the second secondary coil alternately according to the power received by the primary coil;
• the second secondary coil corresponds one-to-one with the light string group;
• the voltage conversion module is configured to generate an additional voltage according to the first voltage, and superimpose the additional voltage onto a corresponding second voltage at both ends of the second secondary coil to output a superimposed third voltage;
• the feedback module is configured to generate a feedback signal based on an output current of the light string group and send the feedback signal to the voltage conversion module, wherein the feedback signal is configured to instruct the voltage conversion module to adjust the third voltage;
• the first light string is connected with one corresponding end of the second secondary coil, the second light string is connected with the other corresponding end of the second secondary coil, and both are configured to emit light based on the third voltage.