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Constant current LED drive circuit based on switching power supply
Source: InternetPublisher:兰博 Keywords: Switching power supply constant current LED drive circuit Updated: 2020/09/02
Because there is no variable resistor Rd in the circuit. So the power efficiency is high. In the series topology of LEDs, the current flowing through the LEDs is fixed and is not affected by the number of LEDs. For the parallel topology of LEDs, the current sharing effect of the parallel path cannot be guaranteed.
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