A starting control circuit

Abstract

The application discloses a starting control circuit and relates to the technical field of frequency conversion devices. The starting control circuit comprises a starting control loop and a signal output loop. The starting control loop comprises an input voltage node, a reference voltage node, a first switch branch and a second switch branch, a starting branch and a relay branch. The signal output loop is used for outputting a control signal for controlling the first switch branch and the second switch branch to alternately conduct according to the conduction and the off state of the first switch branch and the second switch branch. Through the implementation of the starting control circuit disclosed in the embodiments of the application, the modules in the equipment can be automatically started in sequence, the next module is started after the previous module normally works, manual starting and detecting whether the module normally works are avoided, and the working efficiency is improved.

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