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How to Distinguish Positive and Negative Electrodes from Designation Photoelectricity in LED Light Emitting Diodes
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How to Distinguish Positive and Negative Electrodes from Designation Photoelectricity in LED Light Emitting Diodes

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  • Time of issue:2019-07-16 08:40
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(Summary description)HowdoLEDlightemittingdiodesdistinguishbetweenpositiveandnegativepoles?IntheapplicationprocessofLEDlightemittingdiodes,itisoftenencounteredhowtoidentifythepositiveandnegativepolesofLED.Thereasonwhythelightisnotbrightisthatthepositiveandnegativepolesareweldedintheoppositedirection.Thelightwillnotbebright.Nowwewillexpandourteachingtoidentifythepositiveandnegativepolesofallkindsoflight-emittingdiodes.   StrawCapLEDPositiveandNegativeElectrodes   ComparedwithpatchLED,strawcapLEDbeadshaveagooddistinctionbetweenpositiveandnegativepoles.TherearetwopiecesofpinsinsidetheLED.WecallthemLEDbrackets.Thenegativepolebracketsarelarger,becausethenegativepolebracketsareloadedwithLEDchips,andthepositivepolebracketsaresmaller.SothestrawcapLEDbeadsupportDalianconnectstheleadisnegative,thesupportsmalllinkleadispositive;thegeneralstrawcapLEDbead,wecanalsoseehispin,thegeneralpinshortisnegative,thepinlongispositive(ofcourse,thismethodonlyinthecaseofrelativelynewLEDbeads,pinsaresound,canbezoned.Therearemanywaystodetectthepositiveandnegativepolesofled.Themoreaccuratewayistousemultimeter.   Multimeterdetectionmethod.Whenusingthemultimetertodetectthelightemittingdiode,the"R*l0k"filemustbeused.We'vetalkedaboutitbefore.Thetubevoltagedropofthelightemittingdiodeis2V.Whenthemultimeterisin"R*lk"andtheresistorsbelowit,thebatteryinthemeterisonly1.5V.Itislowerthanthetubevoltagedrop.Nomattertheforwardorreverseaccess,thelightemittingdiodecannotbeturnedon,soitcannotbedetected.TheR*1ktimetableisequippedwith9V(or15V)highvoltagebattery,whichishigherthanthetubevoltagedrop,soitcanbeusedtodetectlightemittingdiodes.Whentesting,thetwopensareconnectedwiththetwoleadwiresofthelightemittingdiode,suchasthepinisdeflectedbyhalf,andthereisabrightspotinthelightemittingdiode,indicatingthatthelightemittingdiodeispositivelyconnected.Atthistime,thepositivepoleisconnectedwiththeblackpen(connectedwiththepositivepoleofthebatteryinthetable);andtheredpen(connectedwiththenegativepoleofthebatteryinthetable)isconnectedwiththeredpen(connectedwiththenegativepoleofthebatteryinthetable).Negativepole.Thenthetwopensarealignedandconnectedwiththelight-emittingdiode.Atthistime,thecounterneedleshouldnotmove.Ifthemeterneedleisdeflectedtotheheadordoesnotmoveregardlessoftheforwardorreverseaccess,thelightemittingdiodeisdamaged.   Judgingpositiveandnegativepolesof5050patchLED   5050patchLEDisacommonlyusedpatchLEDinLEDenergy-savinglamplightingindustry,butmanyusersdonotknowhowtoweldwhentheyget5050patchled.Thereasonisthattheydonotknowhowtodistinguishthepositiveandnegativeof5050patchled.Todaywewilltellyouhowtodistinguishthepositiveandnegativeof5050patchled.Weusetheformofpictures.Let'sintroduceitintuitively.Ihopeitwillbehelpfultoyouall!__________.   Thewhole5050patchLEDissquare.Oneofthefourrightangleshasasmallanglewithasmallgap,whichistheplacewheretheredcircleisontheway.Otherrightangleshavenosmallangle.Theonewithasmallangleisthenegativepoleandtheotheristhepositivepole.Fordetails,pleaseconsultTaiwanTaimingOptoelectronics-ChengLi159998297-ChengLi(Weixinidenticalnumber).)QQ:3079986507

How to Distinguish Positive and Negative Electrodes from Designation Photoelectricity in LED Light Emitting Diodes

(Summary description)HowdoLEDlightemittingdiodesdistinguishbetweenpositiveandnegativepoles?IntheapplicationprocessofLEDlightemittingdiodes,itisoftenencounteredhowtoidentifythepositiveandnegativepolesofLED.Thereasonwhythelightisnotbrightisthatthepositiveandnegativepolesareweldedintheoppositedirection.Thelightwillnotbebright.Nowwewillexpandourteachingtoidentifythepositiveandnegativepolesofallkindsoflight-emittingdiodes.   StrawCapLEDPositiveandNegativeElectrodes   ComparedwithpatchLED,strawcapLEDbeadshaveagooddistinctionbetweenpositiveandnegativepoles.TherearetwopiecesofpinsinsidetheLED.WecallthemLEDbrackets.Thenegativepolebracketsarelarger,becausethenegativepolebracketsareloadedwithLEDchips,andthepositivepolebracketsaresmaller.SothestrawcapLEDbeadsupportDalianconnectstheleadisnegative,thesupportsmalllinkleadispositive;thegeneralstrawcapLEDbead,wecanalsoseehispin,thegeneralpinshortisnegative,thepinlongispositive(ofcourse,thismethodonlyinthecaseofrelativelynewLEDbeads,pinsaresound,canbezoned.Therearemanywaystodetectthepositiveandnegativepolesofled.Themoreaccuratewayistousemultimeter.   Multimeterdetectionmethod.Whenusingthemultimetertodetectthelightemittingdiode,the"R*l0k"filemustbeused.We'vetalkedaboutitbefore.Thetubevoltagedropofthelightemittingdiodeis2V.Whenthemultimeterisin"R*lk"andtheresistorsbelowit,thebatteryinthemeterisonly1.5V.Itislowerthanthetubevoltagedrop.Nomattertheforwardorreverseaccess,thelightemittingdiodecannotbeturnedon,soitcannotbedetected.TheR*1ktimetableisequippedwith9V(or15V)highvoltagebattery,whichishigherthanthetubevoltagedrop,soitcanbeusedtodetectlightemittingdiodes.Whentesting,thetwopensareconnectedwiththetwoleadwiresofthelightemittingdiode,suchasthepinisdeflectedbyhalf,andthereisabrightspotinthelightemittingdiode,indicatingthatthelightemittingdiodeispositivelyconnected.Atthistime,thepositivepoleisconnectedwiththeblackpen(connectedwiththepositivepoleofthebatteryinthetable);andtheredpen(connectedwiththenegativepoleofthebatteryinthetable)isconnectedwiththeredpen(connectedwiththenegativepoleofthebatteryinthetable).Negativepole.Thenthetwopensarealignedandconnectedwiththelight-emittingdiode.Atthistime,thecounterneedleshouldnotmove.Ifthemeterneedleisdeflectedtotheheadordoesnotmoveregardlessoftheforwardorreverseaccess,thelightemittingdiodeisdamaged.   Judgingpositiveandnegativepolesof5050patchLED   5050patchLEDisacommonlyusedpatchLEDinLEDenergy-savinglamplightingindustry,butmanyusersdonotknowhowtoweldwhentheyget5050patchled.Thereasonisthattheydonotknowhowtodistinguishthepositiveandnegativeof5050patchled.Todaywewilltellyouhowtodistinguishthepositiveandnegativeof5050patchled.Weusetheformofpictures.Let'sintroduceitintuitively.Ihopeitwillbehelpfultoyouall!__________.   Thewhole5050patchLEDissquare.Oneofthefourrightangleshasasmallanglewithasmallgap,whichistheplacewheretheredcircleisontheway.Otherrightangleshavenosmallangle.Theonewithasmallangleisthenegativepoleandtheotheristhepositivepole.Fordetails,pleaseconsultTaiwanTaimingOptoelectronics-ChengLi159998297-ChengLi(Weixinidenticalnumber).)QQ:3079986507

  • Categories:Industry News
  • Author:
  • Origin:
  • Time of issue:2019-07-16 08:40
  • Views:
Information
How do LED light emitting diodes distinguish between positive and negative poles? In the application process of LED light emitting diodes, it is often encountered how to identify the positive and negative poles of LED. The reason why the light is not bright is that the positive and negative poles are welded in the opposite direction. The light will not be bright. Now we will expand our teaching to identify the positive and negative poles of all kinds of light-emitting diodes.
 
 
 
Straw Cap LED Positive and Negative Electrodes
 
 
 
Compared with patch LED, straw cap LED beads have a good distinction between positive and negative poles. There are two pieces of pins inside the LED. We call them LED brackets. The negative pole brackets are larger, because the negative pole brackets are loaded with LED chips, and the positive pole brackets are smaller. So the straw cap LED bead support Dalian connects the lead is negative, the support small link lead is positive; the general straw cap LED bead, we can also see his pin, the general pin short is negative, the pin long is positive (of course, this method only in the case of relatively new LED beads, pins are sound, can be zoned. There are many ways to detect the positive and negative poles of led. The more accurate way is to use multimeter.
 
 
 
Multimeter detection method. When using the multimeter to detect the light emitting diode, the "R * l0k" file must be used. We've talked about it before. The tube voltage drop of the light emitting diode is 2V. When the multimeter is in "R *lk" and the resistors below it, the battery in the meter is only 1.5V. It is lower than the tube voltage drop. No matter the forward or reverse access, the light emitting diode can not be turned on, so it can not be detected. The R *1k timetable is equipped with 9V (or 15V) high voltage battery, which is higher than the tube voltage drop, so it can be used to detect light emitting diodes. When testing, the two pens are connected with the two lead wires of the light emitting diode, such as the pin is deflected by half, and there is a bright spot in the light emitting diode, indicating that the light emitting diode is positively connected. At this time, the positive pole is connected with the black pen (connected with the positive pole of the battery in the table); and the red pen (connected with the negative pole of the battery in the table) is connected with the red pen (connected with the negative pole of the battery in the table). Negative pole. Then the two pens are aligned and connected with the light-emitting diode. At this time, the counter needle should not move. If the meter needle is deflected to the head or does not move regardless of the forward or reverse access, the light emitting diode is damaged.
 
 
 
Judging positive and negative poles of 5050 patch LED
 
 
 
5050 patch LED is a commonly used patch LED in LED energy-saving lamp lighting industry, but many users do not know how to weld when they get 5050 patch led. The reason is that they do not know how to distinguish the positive and negative of 5050 patch led. Today we will tell you how to distinguish the positive and negative of 5050 patch led. We use the form of pictures. Let's introduce it intuitively. I hope it will be helpful to you all! __________.
 
 
 
The whole 5050 patch LED is square. One of the four right angles has a small angle with a small gap, which is the place where the red circle is on the way. Other right angles have no small angle. The one with a small angle is the negative pole and the other is the positive pole. For details, please consult Taiwan Taiming Optoelectronics-Cheng Li 159998297-Cheng Li (Weixin identical number). ) QQ: 3079986507

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Next: Analysis of Manufacturing Process and Testing Items of LED Chips
Previous: What are the packaging methods of LED?
Next: Analysis of Manufacturing Process and Testing Items of LED Chips

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Time of issue:2019-05-17 00:00:00

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Time of issue:2019-05-17 00:00:00

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Welcome your consultation!

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