I was working on a project that involved LEDs. I tried to check them with my digital multimeter (DMM) set to the Diode function. No mater which way I connected the test probes, the DMM read "OL". Yet, when I tested a normal diode, the DMM read "OL" when the probes were connected the wrong way, and the correct Voltage drop when connected the correct way. The LEDs were typical with 20mA, 2-4V ratings.
I know the LEDs I was trying to test were good, because they worked just fine when installed in my project.
Why did my DMM read "OL" testing the LED and the voltage drop when testing the normal diode?
Thanks in advance for your help!
I know the LEDs I was trying to test were good, because they worked just fine when installed in my project.
Why did my DMM read "OL" testing the LED and the voltage drop when testing the normal diode?
Thanks in advance for your help!