Summary:
This paper introduces the special requirements of the switching power supply for relay protection! According to the application characteristics of the relay protection system power supply and the national safety standards! A design method for the power supply for relay protection in accordance with national standards is proposed! The control circuit and its control circuit are introduced. Anti-jamming design. The main technical indicators and measured results of the power supply were analyzed.
UC3844 chip simplified principle block diagram
See the uploading document for the principle of single-ended flyback switching power supply circuit.
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