Mining isolation type intrinsic safety LED driving power source
An LED drive and isolation technology, applied in the field of mine isolated intrinsically safe LED drive power supply, can solve the problems of increasing the volume and increasing the cost, and achieve the effect of improving reliability, improving response speed and good reliability.
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[0022] The technical solution of the invention will be described in detail below in conjunction with the accompanying drawings.
[0023] Such as figure 1 As shown, the isolated intrinsically safe LED drive power supply of the present invention includes an input rectification filter circuit 1, an isolation transformer 3, an output filter circuit 5, a feedback sampling and switch tube control circuit 6, a switch tube peak voltage suppression circuit 4; an input rectification filter circuit The output of 1 is connected to the isolation transformer 3, the output of the isolation transformer 3 is respectively connected to the output filter circuit 5 and the feedback sampling and switching tube control circuit 6, the output of the feedback sampling and switching tube control circuit 6 is connected to the switching tube peak voltage suppression circuit 4, and the switching tube peak voltage suppression The output of the circuit 4 is connected to the input of the isolation transformer...
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