Powerful Led Torch Light

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YT16 720P Led Flashlight DVR,Torch Camera

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FAQ

Flashlight with 9 LED bulbs, you need a few batteries, a few sections, volts, how much time can take?

With 3 batteries can be connected in series, if the brightness is not enough, you can try 4 batteries in series. As for the number, it doesn't matter. Batteries 5, 7, or other models are basically different in size and capacity

When the LED flashlight is charged, the bulb turns dark, the light is dim, and the spot is a little yellow. It has been charged for 5 hours

Lead terminal voltage greatly exceeds the rated value, if the driver then there may be damaged. To sum up, according to the inspection process you are so simple, basically all components may be bad, such as to the exact scope of fault, to provide more data.

Cree flashlight lamp which is the best.

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.

High power flashlight LED lamp is 1W, want to use mobile phone battery when 4.2V is connected to electric drums!

As for the big resistance associated with rated voltage of LED bulb. Assuming the 3.3V, the 1W current is about 0.3A.The voltage on the resistor is 4.2-3.3=0.9V, the current is 0.3A, and the series resistance is about 0.9/0.3=3 ohms.Assuming LED lamp voltage rated voltage is 3V, current of about 0.33A 1W.Resistor voltage is 4.2-3=1.2V, current 0.33A, about 1.2/0.33 = 3.64 OHM Series resistor.

What brand of LED flashlight is good?

Medium grade flashlight is generally used LED as light source, of course, except HID. The cylinder body is made of aluminum alloy, stainless steel, titanium alloy and other metal materials.

Can the battery of the LED flashlight be distilled?

To make this flashlight truly convenient long the only way is to use three NiMH batteries or lithium batteries to supply power to it, but the cost will be several times the growth in the popularity of the market will be greatly affected.

What is the voltage of the LED rechargeable flashlight?

Usually 4V, 4V is ok. Don't use it above 4V!

How to detect the flashlight LED lamp is good or bad?

It may be because the measurements in the plate, 6 beads in parallel, and the meter provide insufficient measurements of current shunting. Well, after the 2 1.5V batteries are connected in series, measure directly, or measure the resistance of the mobile phone battery string 50, or measure the resistance of the charger with a 100 ohm charger.As long as the measurement voltage is controlled at about 3V DC or the current under DC 20mA is measured, the results can be obtained directly in the plate measurementPut aside