Whether uv led strip can handle mite?
The uv led strip can finish off the bacteria. in generally it application of Air disinfection , one hour user time is best. Energy Radiation of uv led strip is relatively low and weak penetrating powe . so they barely kilied that directly radiate the Microorganism. The effect is kind of slight for mite in quilt or mattress.

The led current too larger is so Damaging to led server time

The position proportional relationship between the light intensity and current of led, when led working in regular scope(voltage & current) .
the current rising the more bright .when reached to a limit point(user can refer to relevant datasheet)the light intensity and current not be position proportional relationship. They have become that Exponential relation. Other words : the led current has more double ,but the led luminous will be not double. It may add a little. Where are the remain energy going? Vast amounts of energy converted into heat. Which heat can store led body. Under such work mode , there are could be more chance to damage LED.

Ir led and 38KHZ carrier frequencyThe carrier frequency of ir led is 38kHZ.the 38khz is familiar to us.Why ir led had only taken 38kHZ?
the principle is : carrier frequency at 30khz to 60khz.but the 38khz for almost applications. This is due to translate with 455kHz crystal . the 455kHz crystal can output an integer number for ir led . Frequency Division Factor to 12 . like this 455kHz÷12≈37.9kHz≈38kHz.
But that was in the past, at moment Except 38KHZ， there are have 26 kHz、36 kHz、40 kHz、56 kHz、80 kHz of ir receiver in led market . the single frequency receiver is fastened to specifies frequency. For example the 38khz receiver just only decoding 38khz, the 56khz receiver just only decoding 56khz. With the exception of fixed frequency receiver .there are have wideband receiver(also call variable-frequency or full-frequency).the wideband receiver holds only within certain limitations. which shown that it have stronger function and wider application area.

As we know stop a vehicle by applying the brake , then brake lamp is lit.. the instruct lamp is importance part for car brake system . the brake lamp on the right and left sides. It’s red led. Red color represent warning and instruct. The signal warned the public to be vigilant and report that the car running into brake system. Other carts that gained signal slowed the car or stop car . Prepare a solution ahead of time.
we could make a brake lamp with fog lamp. Or used as LED for brake.

Talk about 395nm and 365nm
The 395nm and 365nm represent in wavelength of uv led strip. The shorter led wavelength , the visual will dim .we makes a test that the light of 395nm and 365nm get into white paper at time, the 395nm more lumen than 365nm on white paper.
Optical speed almost same. So the frequency being inversely proportional to light wave length. The shorter led wavelength has better penetrating power（Photons have no mass， but base on theory of photons , the bigger frequency and the shorter wavelength ,the bigger power）.

Now, makes a example for you refer X-ray is widely used in industrial non-destructive testing and medical perspective inspection because of its strong penetrability.

Efficiency of led wavelength
The led is not simply lighting product, it was new lionized by scientific researcher .

It is essential that to review this know point. The follow is difference led wavelength.
Ultraviolet: uv led strip make ultraviolet , the scale of wavelength as 311nm～400nm，wave width as 20nm～30nm，wave power as 6mW～300mW ,UVA can be used to treat the Skin diseases such as psoriasis, also can using in Beauty and sterilization

Infrared: infrared applies to make infrared production(device) and user can using ir led(wavelength in 780nm～1200nm) , in the wavelength can be used to that Anti-inflammatory and Analgesic , and helps to enhance metabolism and strengthen immunity.

Blue light: the led source with 425nm～475nm can curing can be used to treat the Neonatal jaundice .

And with wavelength in 446nm～477nm to adjust The pineal gland amine hormone secretion of melanin to promote the brain tissue.

Red light: The red light has wide application ,it can applies in the effects of light on chemical systems. It should speed up the synthesis of cell and to promote that wound recovery.
violet

Mixture light and white light: there were several different wavelength are encapsulated inside the shell . different wavelength   can meet the various needs of Treatment.

                  AC LED　&       DC LED
 The DC led requires dc adopt to drive. But AC can directly drive by AC. There are have some different parameters between AC led and DC led. Please refer to table as follows:

The option  of led work current

First The small power led(5mm straw hat) work current is less than 20mA;16mA are used. We got the work current form datasheet. What was work curve of led ?
We also give an example to illustrate the graph .in here was common φ3mm white led . the data sheet about three points on the graph.left Ordinate as resistance of photosensitive resistance（Rc）. The Abscissa as various value of led current. The graph can seen clearly that as ID increased The Rc would be depressed more lesser.
The current is smaller, the led temperature is getting smaller. This is implied by the dotted arrow in the figure. the dotted line can seen clearly that the led temperature began to pick up speed. for example led temperature reached the 40℃ when led current is 25mA.exceed 25mA were unsafe.
Base on data above , φ3mm led safe work current should be less than 25mA .

Conversion relations of led luminous flux and led power
The led luminous flux refer to how much of led luminous led source produces per unit time. In simply work is that it gives a total luminous of led. The theory has found an increasingly wide utilization in design work. . The luminous flux big ,the bright .Indicate unit as Lm, the paper below presents a kinds of algorithm for conversion between the luminous flux and led power .
In fact, we can even hear colors that the human eye cannot perceive, like infrared and ultraviolet.( infrared and ultraviolet produces by uv led strip) .but in here we talked exclusively about vision light.
The human eye in most sensitive of light is 555nm (yellow green), 1W=683lm,in other words:

1 watt can translate into 683lm. This is Calibrating Value also be the most conversion rate.

For other color, the red(650nm),1 watt equivalent of just 73lm. The reason is human eye are relatively insensitive to red.

Study on series – parallel led
There are couple of connection way for led, series and parallel respectively.
First analyses were series on led circuit ..

Advantage: Design is simply, according to led work theory All LED have the same work current . in here the work current of led equal to input current. And not , concerned about Vf, base on the scale of led power input, as long as large scale short do not occur , the led circuit would guarantee that working order. There was a litter drop in led luminous .

Disadvantage: whole led circuit is brake when a led trigger short.
the input work voltage is biggest that parallel circuit.

The follower we are talk about parallel

Advantage: the input voltage was small. Production process is simply. Without affect other led worked when a led is short.

Disadvantage: the Vf of Led have strict requirement (consistency), inconsistency of led Vf can lead current is inconsistency . in case some led current would quickly increase ,then temperature increase, All of this would be made Light decay.