Partition type driving circuit for general lighting LED (light emitting diode) street lamp
A technology of LED street lamps and driving circuits, which is applied in the electronic field, can solve problems such as burnout, and achieve the effect of simplifying the circuit, simplifying the circuit, and simplifying the design
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[0023] like figure 1 As shown, the circuit is mainly composed of surge protection and electromagnetic interference suppression circuit, L6562, isolated switching transformer T1, MOS field effect transistor Q1, microcomputer chip STC12C5410AD, voltage regulator tube LM1117, optocoupler isolator PC817, operational amplifier LM358 and resistors, Composed of capacitors and diodes. The power factor correction is composed of L6562 and its peripheral circuits, the switching transformer T1 completes the voltage conversion, the optocoupler PC817 realizes the isolation of the output circuit from the input mains circuit, the operational amplifier LM358 completes the sampling of the output voltage and the control of constant current and constant voltage, and between them The automatic switching among them, the microcomputer chip STC12C5410AD completes the functions of LED fault detection and output current control.
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