PROTECTION CIRCUIT FOR PROTECTING LIGHT-EMITTING DIODES OF LASER EMITTER AND PROTECTION METHOD

摘要

A protection circuit for protecting light-emitting diodes of a laser emitter is provided. The laser emitter includes a first LED for reading multimedia data stored in a first media and a second LED for reading multimedia data stored in a second media. Cathodes of the first LED and the second LED are grounded, and anodes of the first LED and the second LED are connected with soldering tin. The protection circuit includes a first protection element with a first breakdown voltage and a second protection element with a second breakdown voltage. One end of each of the first protection element and the second protection element is grounded. When the circuit is connected to the laser emitter, residual ends of the first protection element and the second protection element are respectively connected to the anodes of the first LED and the second LED.