GS發(fā)射管

通的的紅外線發(fā)射管外形和一般的可見光LED相似，但卻是發(fā)出紅外線。

其管壓一般降約1.4v，工作電流一般小于20mA。為了適應(yīng)不同的工作電壓，

回路中常常串有限流電阻。發(fā)射紅外線去控制相搜索應(yīng)的受控裝置時(shí)，

其控制的距離與發(fā)射功率成正比。為了增加紅外線的控制距離，紅外發(fā)光二極管

工作于脈沖狀態(tài)，因?yàn)槊}動(dòng)光（調(diào)制光）的有效傳送距離與脈沖的峰值電流成正比，

只需盡量提高峰值Ip，就能增加紅外光的發(fā)射距離。提高Ip的方法，是減小脈沖占空比，

即壓縮脈沖的寬度T，一些彩電紅外遙控器，其紅外發(fā)光管的工作脈沖占空比約為1/3-1/4；

一些電器產(chǎn)品紅外遙控器，其占空比是1/10。減小脈沖占空比還可使小功率紅外發(fā)光二極

管的發(fā)射距離大大增加。

GS tubes

Through infrared transmitting tube shape and common visible light leds are similar, but it is a infrared light.

The pipe pressure generally drop is about 1.4 v, working current is generally less than 20 ma. In order to adapt to different working voltage,

Loop is often limited flow resistance. Launch infrared search should be controlled unit to control the phase,

The distance is proportional to the transmitted power control. In order to increase the control range of the infrared, infrared light-emitting diodes (leds)

Work in pulse state, because pulsating light modulation (light) the effective transmission distance is proportional to the pulse peak current,

Just try to improve the peak Ip, can increase the launch distance of infrared light. Improve the Ip method, is to reduce pulse duty ratio,

The compressed pulse width T, some color TV infrared remote control, its infrared light-emitting tube work pulse duty ratio is about a third - quarter;

Some electrical products, infrared remote control the duty ratio is 1/10. Reduce the pulse duty ratio also can make the small power infrared light-emitting diode

The launch of tube distance is greatly increased.