Direct control protector of photoelectric universal motor

The invention discloses a direct control protector of a photoelectric universal motor. The direct control protector comprises a motor three-phase input circuit and an AC contactor, wherein an output end of the motor three-phase input circuit is connected with an input end of the AC contactor; the output end of the AC contactor is connected with a step-down shunt circuit and a working power supply circuit in parallel; the output end of the step-down shunt circuit is electrically connected with a rectifier indicating circuit, a filter voltage stabilizing circuit, a photoelectric conversion circuit, a signal amplification circuit, a monostable time-delay circuit and an amplification control circuit in sequence; the output end of the amplification control circuit is connected with a control terminal of the AC contactor; and the working power supply circuit provides the signal amplification circuit, the monostable time-delay circuit and the amplification control circuit with a power supply. By the direct control p