About jburroughs1

Oct. 22, 2015
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  • "Joule Thief" Circuits, crude to modern...

    Dave,There are two observations. All the parts are new. The inductor is not the "seafoam green" but brown and I can't seem to find what those differences if any are. I have some smaller inductors coming. The first day or two no doubt were sunny and they certainly got a good charge but if I measure the batt voltage I get more than a volt(AA). One I had on a bread board and the other I soldered up. Neither will stay lit for more than a few minutes now. In fact to get the one that is solders up I have to flash the light in the dark room on to trigger it. Any thighs would be appreciated. I'll put together some others and see what happens.

    Dave,I found the spec sheet for the 5252f says it switches off at .9v so that must be what is happening so I'm going to replace with a new akaline battery(its raining today) and see how long it lasts. I'll also build a new circuit with a switch from the battery so I can save the batt and turn off the light. I'm hoping this will be the fix! Thanks for your help and I'll let you know what happens this weekend

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  • "Joule Thief" Circuits, crude to modern...

    Dave, I've been using the "nocturnal solar lamp" instructable and when I first built them they worked flawlessly. I was just trying to prototype before I built them into a container and they charged up during the day and lasted all night till the morning came and they turned off. Now they only come on for shorter and shorter periods of time. The battery shows 1.4 volts and the Solar Panels are 3 volts an 70ma. I have a 330uh inductor and a 0.5W straw hat. I can't work out why this is happening. Any ideas?

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  • jburroughs1 commented on deba168's instructable BUILD A NOCTURNAL SOLAR LIGHT BULB7 months ago

    I'm having trouble getting to work. My 5252f ICs are 1302. Is there a difference between these and yours 1306? I've gotten the LeD to light when panel is uncovered and it's kind of dim..

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