Thyristor constant current control device of power supply

The utility model relates to a thyristor constant current control device of a power supply, which comprises a power supply input end, a transformer connected with the power supply input end, a full-control rectifier bridge connected with the output end of the transformer, and a constant current power supply output end connected with the full-control rectifier bridge, the output end of the fully-controlled rectifier bridge is connected in parallel with a freewheeling semiconductor. According to the thyristor constant current control device of the power supply, through the design of the transformer, the full-control rectifier bridge and the follow current semiconductor, the circuit is simplified, high-speed semiconductor switch chopping and corresponding control circuits are reduced, resource waste is reduced, and the cost is reduced; and by adopting a series connection mode after rectification of the transformer with a double reverse star Y-D/Yn structure, the power supply efficiency is improved. 本实用新型涉及一种电源的晶