@gunrunnerjohn posted:The amount of storage and the current setting directly affect the hold-up time for the lighting. The dimmer you run them, the longer they'll last during power interruptions.
Here's a 1,000uf cap that will drop in and double the capacitance. It is taller than the 470uf cap, but the same lead spacing and diameter.
Today, I got around to building a PCB with the 1,000 uf cap. But I had a frustrating afternoon. Could not get it to work and wonder if I messed up somewhere. I know it's a long shot, but can you tell from the photo where I went wrong?
What happens when I input 17.5 - 18 V AC: I get about 6 - 6.5 V DC out, measured at the output terminals. This output won't light my strip of LEDs (3528 ribbon style, rated for 12V DC.) Turning the pot makes no difference. If I apply DC current to the same LED strip directly, ie not through the board, it lights just fine, even at 6 V DC, although it is fairly dim at that voltage. Should I swap out the 1000 uf cap for the 470 uf and see if that works?
(I checked and re-checked everything I could think of for over an hour. Ready to jump off a bridge but my wife poured me a big glass of Malbec and now I am feeling better.)
Bob
