Indoor switching power supply

The power switch is to use the circuit to control the switch tube for high-speed pass and cut. Convert the direct current into high frequency alternating current and supply it to the transformer for transformation, thereby generating the required one or more sets of voltages!

Since the LED is a non-linear device and has no current limiting capability, a constant current power supply (300mA±5%) is used here to ensure the stable working current of the LED. The constant current power supply is not a common power supply (the common power supply is a constant voltage power supply, that is, the output voltage is stable, and the output current depends on the size of the load). The characteristic of the constant current power supply is that the voltage is variable, but the current is stable. For example, for your power supply, no matter how many LEDs (not more than 7) are connected in series, the output current is always 300mA. Therefore, this power supply cannot be replaced with a conventional power supply.

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