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Hey betwixt (Brian),
I received my PB137, but have a general knowledge type question for you. When the input voltage drops below the dropout voltage of around 15.7-16 Volts, does that mean that the regulator shuts down, gives a 0 Volt output? If that's not the case, and it still provides some...
Thanks, Brian. I knew I'd be cutting it close, but the numbers I gave are worst-case scenario (plan for the worst, hope for the best, right?). I really appreciate your input, especially when combining technologies and their faults as well. I agree about MPPT - it's just not cost effective...
Okay, I think I see. From what I've read, MPPT and other charge controllers just won't work with small panels like mine. The only reason I got the panel was to keep a 9AH SLA topped off. The battery powers an automatic opening/closing chicken coop door that I built for a local family. The...
Okay, Vbase and betwixt - I really like the idea of the PB137 linear regulator. I just went with the buck because I knew I had to drop the voltage and that's the only thing I had in my bag-o-tricks at the time!
My panel is a preassembled cheapo unit, so I gotta take what it gives me, though...
Hi all,
I'm setting up a small solar panel to act as a trickle charger for a small 12V SLA battery. I've stepped down the 22 volt max from the 1.5 watt solar panel to 13.5 volts with a buck converter, with a maximum current of about 250 mA, but when the solar panel outputs less than 13.5...
Thanks for the reply! I'm going to keep it simple - IF I actually need to make sure that the higher current doesn't back-feed I'll just use diodes...adding another chip or relay (where there really isn't room) is departing from my "KISS" mentality. :)
These LEDs are the newer 70,000mcd...
Hello all,
Okay, here’s the background and circuit info first:
I'm replacing my aging incandescent tail/brake lights on my old motorcycle with an LED array to try to keep my stator from burning out.
Since the original brake and tail lights use a single bulb with dual filaments, and LEDs...
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