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Where I live, we frequently go without power 3-8 hours at a time. It can get annoying and expensive running down batteries for light and burning candles is ...
The problem of polarity was solved by building a bridge rectifier. We usually think of rectifiers in the sense of converting AC to DC, but they can also ...
The springclips on a lantern battery can be frustrating to attach things to. I decided alligator clips were the best solution. They are imply soldered onto the inputs ...
If you want to be accurate at this point, you can measure the voltage drop caused by the bridge to accurately compute the resistor you will need. I ...
I have these lovely little 10 mm LEDs from Alan Parekh, which are very bright, but I didn't just want a spot on the ceiling so following guyfrom7up's ...
I attached the LED resistor combo to the bridge, remember, here polarity matters. Now we have a circuit that we can clip onto the battery, in the dark ...
How to Build a 5 Channel Flame-less LED Candle Simulatorby wireb
Emergency Lighting Systemby DIY Hacks and How Tos
LEDs for Beginnersby noahw
Dark Lights LEDby botronics
USB Rechargeable LED flash lightby alexander.m
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