Working conditions of Infrared led
Infrared light radiated power is proportional to the forward current, but close to the maximum forward current,temperature of the device current consumption due to the heat rises,cause light emission power decreased. Ir led strip’ current too small, will affect the radiation power play, other conclusions will affect its life when Ir led strip’ current too big, cause severe damage to led strip.When the voltage across the threshold of positive voltage  current begins to flow and That’s an very steep curve，show that the working current is very sensitive. Therefore, the operating current is required to be accurate and stable, otherwise it will affect the radiation power and its reliability. With the increase of the temperature in radiation power’ changes(including its own heat generated by the ambient temperature),so that radiation power will decrease. The Infrared led especially long-range’ Infrared led,   should pay attention to the design and selection that lpd6803 led strip of problem. Therefore, the use of IR infrared lamp must have constant current power supply, good heat dissipation and good design.

What details should be paid attention to in the use of LED lights in the office decoration? LED lights can be installed to form a special visual effect in the ceiling, entrance, backdrop and other parts.On the basis of led light, LED light bar Can be divided into ordinary brightness, high brightness, super bright,to meet different needs.
LED luminous colors are red, green, blue, yellow, green, purple, colorful, and white, suitable for different environments, different needs of occasions.low power LED only 0.06W and only the 0.03W voltage by DC 12V power supply, safe, and environmentally friendly (DC no strobe can protect the eyes).When buying lpd6803 led strip, you should look to see the diameter of led strip. ingeneral standard as 16-18MM; Buy LED lights, should see clearly see the diameter of the lamp, led strip with the external PVC whether clean and clear.Do not buy ordinary light bulb, power consumption, temperature rises rapidly, easily lead to fires.Light has light failure,Initially it’s（poor quality） very high brightness,This led was dark for a while。good quality lamps with 30000 hours after decay of less than 15%. Don’t be fooled by the light of the whole, because you need a brightness, there is a good light with the condenser tank,its light uniform and clear.

Infrared is an electromagnetic wave at nearly Light wave,
electromagnetic wave propagation characteristics with relevant wavelength, In generally long wavelengthtransfer above the ground. medium wave along the surface of the earth, shortwave is reflected by the ionosphere propagation, ultra short wave(FM) and microwave are sight propagation.Rectilinear propagation,lights will be totally reflected when encounter an obstacle, so the infrared communication Similar visible light is unable to penetrate the specifically obstacles, but the glass and the transparent barrier is unaffected,Impedance of red glass blocked is also very small.Let me summarize just by saying that frequency ever more low, diffraction capability of longer wavelength is strong,when attenuation is low; the frequency ever more high, the shorter the wavelength penetration ability ever more strong, may make a higher the attenuation easier.

Control of tungsten lamp with infrared pulse
the infrared receiver connected to the relay then access tungsten lamp. can be Tungsten combustion achieved with ir pulse?
The MCU is send out the pulse to ir led strip, now generally used the integrated receiver,it has been the pulse signal amplification, detection, filtering out the original encoded signal to restore the original encoder pulse signal frequency,in generally the original code is very low frequency pulse signal from MCU, need to use the 38K pulse modulation when When transmission of pulse, the modulated waveform is the result of multiplying the two pulses，
can also be done with the 38K pulse train input signal by a non-goalkeeper coding,the tungsten lamp is no ordinary direct drive, the reaction speed is not up to the requirements (due to high frequency signal receiving head, the relay operation a lot of inertia,the Relay not to do that Continuous and Quick work。but has been energized until there is no signal.The idea is a good one in theory ,but the condition that the average voltage of the signal can reach the relay minimum operating voltage.) I used to drive the laser tube with ir pulses, the effect is very good.

How to use the infrared detector to verify bill authenticity?
We will explain this with led infrared. the bank staff has to painstakingly recount all of the bills and notes by photoelectric switch sensor of money counter. infrared penetration of the working principle is used a fixed wavelength of invisible infrared light, They penetrate the notes, receives the remainder of the ir led strip‘ light is carries on the analysis in view of the characteristics of the banknote paper and cover printing ink by the opposite receiver device.Then compare and contrast them with standard of value. The advantage of banknote is relatively strong,higher density and higher with gravure printing ink thickness,and thus the ability to absorb infrared signals to identify strong genuine banknotes.

There are different infrared signal of absorptive capacity.

according to this principle can be achieved forgeries. It should be noted that the same color and thickness of the ink will cause the difference of infrared penetration. Therefore, the need for mathematical calculations and comparative analysis of the signal detected by the infrared penetration.

What is the most effectivemethodto control ir led strip
The infrared led with high efficiency of infrared radiation material (commonly used gallium arsenide) made of PN junction, the forward bias(the ir led strip 950nm as 3.0v) Injection current to the PN junction can stir up  Infrared light. the spectral power distribution for the center wavelength of 830 ~ 950nm. LED is the abbreviation of light emitting diode, the Performance feature is a positive temperature coefficient,the current ever more big , temperature ever more high. it’s easily get into a vicious cycle. And temperature ever more high, the current ever more big. LED infrared light power is related to infrared led current.but forward current over maximum ratings, infrared emission power performance suffers decreased.put it another way to explain(triadic relation),Emission current ever more small, the sensitivity ever more high ,Then transmit power ever morestrong.The radiation intensity of the infrared emission tube, depending on the distance from the optical axis and change,also varies with the light receiving element is different. The incident light is affected by the change of light components and infrared emitting tube distance.Basically light measurement is inversely proportional with the square of the distance(The distance of the control is proportional to the transmitted power),it’s a positive The different  character oflight device.when use the infrared to the control of controlled unit. the control distance move in proportional with Transmit power. In order to increase the control distance of infrared, infrared emission control working in pulsed mode,because the effective transmission distance of pulse light(PWM)and pulse peak current into positive ratio, just try to improve maximize peak (Ip)can increase the infrared transmitting distance. The method of improving peak(Ip) is to decrease the pulse duty cycle, put it another way to explain, the compressed pulse width （T）. Usually its use frequency in 300KHz or less.

What is the difference between the frequency of infrared and visible light?
What is the difference between the frequency of infrared(ir led strip) and visible light?Us to take exactly wavelength and explain all this. there are ir led 940nm & visible light 770～622nm.
Different wavelength of the electromagnetic wave. reflected in consciousness through sense organs is different by human.
770 ~ 622nm, the feeling is red;
622 ~ 597nm, orange;
597 ~ 577nm, yellow;
577 ~ 492nm, green;
492 ~ 455nm, indigo color;
455 ~ 350nm, purple
to infrared electromagnetic wave be anywhere from microwave and visible light,They are wavelength 760 nm to 1 mm,
Simply words: infrared wavelengths is long than the wavelength of visible light,visible light in the wavelength range about 360-800nm, and infrared wavelength range is wider than visible light, from about 900nm to tens of microns,belong to infrared. Of course,wavelength ever more long, frequency ever more lower!

The relationship between About IR led strip 940nm frequency and 38khz IR led strip 940nm frequency not in the infrared range?
Check the lectromagnetic spectrum

and infrared frequencies is above 3*10^11, also is 300GHZ frequencies above.but the infrared remote control frequency were 38kHz. this frequency is not within the infrared range? How is it?How to return a responsibility?The simplest and most intelligible answer to this question is infrared is a light, and light has wave-particle duality, that in itself can have wave infrared features,Since there are characteristics of waves, it has a periodic (frequency).with waves properties suited for high-tech applications，such as Infrared control. Reflection, it was said above,300GHZ should refer to this frequency. and 38KHZ carrier frequency is modulated infrared involving radio,, involves to the radio, I suggest an alternative strategy（infrared on-off time） to comprehend. infrared appear 13US, and then disappear 13US, again 13us, then disappear 13US. equivalent period 26us(that is the frequency for 38kHz). Only in this way integration of infrared receiving head can receive the signal,if deviation 38KHZ too much, can not receive a signal.

Strobe has been led panel biggest influence

referred to A strobe, the simplest definition refers to the
light fluctuates constantly in switching  period. In the United States, the current frequency as 60Hz,with this frequency  it is hard for Transmit AC.has kept its AC wave within a tight band. Those currents can cause wild voltage fluctuations. Therefore, may produce twice to supply frequency flicker, which is 120Hz.If no suitable electronic circuit, such as ballast, drive or power supply,
light source will be produce stroboscopic. doing this to get attention for other people. Of course there is no physical discomfort. stroboscopic actually is a problem. the lighting industry concern is strobe range that could cause neurological problems and affect job performance humans can detect less than 50 Hz strobe light, of course, there are some people noticed to 100Hz. About 3 to 70Hz low frequency strobe may cause high sensitive populations and These seizures occur, ranged from about 100 to 500Hz moderate strobe may lead to stroboscopic effect of indirect perception. In this case, the dynamic objects may behave as a series of static images.
that’s what dance hall wanted too. but it is dangerous for industrial sites.. For example, strobe will enable mobile gear or blade looks very slowly, or even still. At the same time, it is also to bring a series of negative effects for your health, such as headaches, eye fatigue, and physical and mental fatigue.

RGB lights strip can be divided into two categories,
namely: Colorful led strip and full color led strip, colorful led lights is refers to the whole led strip  in the display of the color has a total of seven, respectively is red, blue, green, white, purple, red, yellow,
, colorful lights by a dedicated controller to control the led strip color,
but not that many show way. So the effect is relatively simple, mainly in order to beat sound effects cannot realize the Full-color.Full-color led  strip and called Magic led lights strip, refers to any color can be achieved, in theory, be able to reach more than 30,000 kinds, can achieve a gradual, meteors, chase, windows, marquees and so on effect, mainly used in that outdoor lighting decoration, KTV decoration, decorative corridor, Patty decoration atmosphere and so on.There the led strip device was, with a control ic that it’s could  control work of led strip.generally have control IC: WS2811, WS2812, WS2821, WS2822.