I saw a quite interesting looking waveform from a 10W LED floodlight powered from 230V AC.
It looks like when AC voltage waveform instantaneous voltage lower than some voltage, it takes practucally no current and above it it looks like a constant current load.
This is picture of the light.
This looks like this uses one of those direct mains AC powered LED modules, like those described in detail here: https://hackaday.com/2019/02/15/cob-led-teardown/
5 Comments
lewdle says:
thank you for helping me better understand Mains LED waveform
RUN 3 says:
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granny says:
Interesting observation! Perhaps the threshold relates to the voltage needed to activate a component, like a diode or transistor.
Tomi Engdahl says:
https://www.facebook.com/share/p/1CwNKTwDbp/
Snow Rider 3D says:
That’s a fascinating observation about the 10W LED floodlight waveform! It’s always interesting to see the unseen electrical characteristics of everyday devices. Makes me wonder how those waveforms would look if they were, say, the bumps and jumps in a Snow Rider 3D course – probably just as chaotic but a lot more fun to navigate! Thanks for sharing this intriguing tidbit.