How to measure LED forward voltage using multimeter diode tester setting probably at 1mA current

#LEDs #electronics #multimeter

[di]

I got a kit with transistors and LEDs but no data sheet so this is really useful

[flyurway]

I'll bet that anyone that plays with electronics regularly found this great. It's all gibberish to me, I've never handled one of those boards you have there so I have no idea what's going on with it. But it looks handy as shit! :) Guess I need to go back to electronics class!

[michealmeaden]

What about no data sheet. You tested it with the diode tester how do know the current. Ohms law. ? Power supply of 5 v so hard to wrap my head around

[flickmew]

I'm newbie to this, sir if you see this comment pls correct me. Based from your video :
1) when you measuring the voltage on the resistor side, is that the remain voltage after dropped by resistor ?
2) when you measuring the voltage on the LED side, is that the remain voltage after forward voltage reduction ?

[BRANDT]

I'm a beginner and I just watched a video of someone testing led's with the diode tester mode & the led lights up but no continuity. (no voltage reading)
I did the same test and got the same results.
Why is it that you get a voltage reading? Because the area on the breadboard where you placed the led's wasn't live.

[linkmasters]

Yeah I have a SMD green led light that takes 1.7 voltage so what ohm resistor do I have to get so it doesn’t blow out

[Cluanar]

I have 2 different meters, when testing leds the meter starts at 1 and stays there even when the light lights up. Some videos say that si correct, it shows its a good led?

[aj]

I am new to this so can you please help.
I want to light up 5mm white led connected to Arduino 5v pin. So what resistor should I use to connect the led. And if I have more than 1, let's say 5 white leds and I want to light them up with the same 5v pin so what should be the setting and what resistor should I use and how would be they connected.

[cjdelphi]

I don't get how your multimeter is able to measure the voltage drop, unless it's running off a 9v battery?

[JohnUsp]

Hi, my DMM can measure Voltage Drop at a maximum of 1.8V. I can measure Red LEDs only, for the other colors the LED turns on weak, but the DMM show "OL". I wonder, this capability of measuring Voltage Drop above 1.8V, it is important? (ps.: the regular silicon diode drops only 0.7V, when will be necessary measure Voltage Drop above 1.8V?) Thank you.

[brentkelly]

so for your 20 mA led's u use a 100 ohm resistor ...correct?

[SteveMagr]

2:40 How to measure a forward voltage of an LED using a multimeter.

[shafiqansari]

Smd led ampere testing meter reading system bnayein.