good day to everyone,i have a couple of questions about diodes.My first question is,¿is it possioble to measure the resistance of a LED?I understand they can have different voltage drops between 2 or 3 V and currents of 20 to 40 ma.So,there is no way i can measure that resistance because the current they receive will depend on the other components of the circuit,or am i wrong?I tried to use ohm s'law dividing LED s' voltage drop by the current in the circuit,but it gave me different values several times.What i udnerstand is that as the diode isn't just an electric resistance or a capacitor,u can't talk about a LEDs' resistance.And i don't see in the media people talking about diodes ohmic resistance,but the diode should have a resistance value,isn't it?
Another question i have is that the diode is supposed to conduct electricity when the voltage supplied to it is more than 0.6V for the pn junction barrier to be surpassed and electrons to flow.I thought in using this to make a sort of diode-capacitor circuit using capacitor charging as time-voltage controls for diode to act as switches.Especifically,i wanted to make LEDs to turn on and off in time using DC circuit.I wasn't sure if that was possible to do at all,but my surprise was that besides a capacitor being charged the didoe stills keeps its voltage drop acroos its terminals.I tried to increase resistance in the circuit and i measured 0,4V across the diode,and it still conducted,why?IF somebody could help me with this it would be greatly appreaciated
Thanks!
Another question i have is that the diode is supposed to conduct electricity when the voltage supplied to it is more than 0.6V for the pn junction barrier to be surpassed and electrons to flow.I thought in using this to make a sort of diode-capacitor circuit using capacitor charging as time-voltage controls for diode to act as switches.Especifically,i wanted to make LEDs to turn on and off in time using DC circuit.I wasn't sure if that was possible to do at all,but my surprise was that besides a capacitor being charged the didoe stills keeps its voltage drop acroos its terminals.I tried to increase resistance in the circuit and i measured 0,4V across the diode,and it still conducted,why?IF somebody could help me with this it would be greatly appreaciated
Thanks!