That time again. Another failed household LED lamp. The gremlin I am just can't leave discovery alone. I've pealed the cover off the bulb, removed the LED PCB and heatsink. Pulled the power supply out of it. Does me no good because I'm fairly sure the failure is in the power supply for the LED's. Nevertheless I'm wondering what would happen if I took a GOOD working LED lamp apart and used the power supply for something else. No - I don't have a project in mind. But understanding how this works might spur a new idea. From what I can tell, it filters AC, rectifies it then oscillates it (likely at a very high frequency) then via board electronics, powers the LED's. And no, I don't know what voltage it's operating at. Nor do I know if it's a constant current setup.
My wonderings is what would happen if I removed the electronics from a good LED lamp and powered it from just - say - 24VAC instead of the designed 120VAC. If it's a constant current device - what current that might be? I have no idea. But I'm just wondering what such a power supply could be used for. Given that this is not one of those cheap chinesium capacitive voltage dropper circuits, if it's usable at a lower AC voltage, just what might I expect out of it?
So I thought I'd post this question and see what kind of responses I get. Please keep in mind I don't have any data on the PCB or the output of the PCB. CV or CC - I don't know. AND keep in mind I don't have a project for such an endeavor. Just that I get scrap stuff from time to time and wonder what I could repurpose it for. So I'd like to see what comes of this question. Thanks.
My wonderings is what would happen if I removed the electronics from a good LED lamp and powered it from just - say - 24VAC instead of the designed 120VAC. If it's a constant current device - what current that might be? I have no idea. But I'm just wondering what such a power supply could be used for. Given that this is not one of those cheap chinesium capacitive voltage dropper circuits, if it's usable at a lower AC voltage, just what might I expect out of it?
So I thought I'd post this question and see what kind of responses I get. Please keep in mind I don't have any data on the PCB or the output of the PCB. CV or CC - I don't know. AND keep in mind I don't have a project for such an endeavor. Just that I get scrap stuff from time to time and wonder what I could repurpose it for. So I'd like to see what comes of this question. Thanks.