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Question:

Strong flashlight, LED lamp positive and negative poles, how to distinguish?

Strong flashlight, LED lamp positive and negative poles, how to distinguish?

Answer:

Generally, the positive electrodes are in the innermost and the negative ones are the outer ones
If it is high-power LED, especially with aluminum substrate, there is a clear "+", "-" pole mark.I'm a titanium light for a flashlight, so I can talk to each other.
See the disk inside the LED - - the thin line above the disk is +

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