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Question:

In the light rechargeable flashlight is how much?

In the light rechargeable flashlight is how much?

Answer:

Common very long or plastic flashlight lamp are generally small strawhat led, power is 0.05W, diameter 5mm, length 9mm. If the power light flashlight, beads are generally CREE, according to the different forms of packaging, size and power are also different.
The terminal voltage of PN junction constitutes a certain barrier. When the forward bias voltage is applied, the potential barrier decreases, and the majority carrier in the P region and the N region diffuse to each other. Since the electron mobility is much larger than the hole mobility, a large amount of electrons will diffuse into the P region, which will result in the injection of minority carriers into the P region. These electrons are combined with holes in the valence band, and the energy is released in the form of light energy when combined. This is the principle of PN junction luminescence.
LED (light emitting diode) is English, LED lamp is a light emitting diode of the English abbreviation LED, this is a popular name.

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