Joule Thief

[dasimpson]

but the one test i did do was a 6 inch peace of 12mm copper pipe and a 2 inch zinc screw and i got 0.5-0.8volt 2-3ma
i only managed 1 cell for a test in a plantpot

Hi dasimpson, i get 0.8V and 0.1mA. How bout you? How big is your EB? 

[dasimpson]

i did something like this when my gf's grand kids come to stay but i cheated and just extended the wires on a solar garden light and put the panel outside but i managed to run 6 led's at full brightness from it for at least 8 hours.
so i made to units like it and got a 12 led ring light some pictures are a few pages back worked out better then expected

@ All

I now have my 5 yo son's nightlight up and working for the last few days, all I have to do is switch the charge switch on and the red(LED) comes on to show it charging the supercap, then when it has reached the charge that I want it to in the supercap, then the green(LED) comes on, I then switch the charge switch off.

When night comes and we put our 5 yo son to bed, I switch his nightlight on, and it shines quite good for
1x LED, and it usually lasts all night till morning, then its quite dim in the morning.

I usually charge the supercap up to only about 1.3-1.5v ,that seems to light the LED all night for him.

I could charge it up to 2.5v or even 2.7 if I wanted to, but hey! it works fine as it is...

The box is a clear lid one at approx 60x65x40mm dimensions, the small solar cell is outside at 4.0v 80mA.

The current draw is very low for this 1x LED joulethief.

[kb24]

but the one test i did do was a 6 inch peace of 12mm copper pipe and a 2 inch zinc screw and i got 0.5-0.8volt 2-3ma
i only managed 1 cell for a test in a plantpot

oh my EB cell is only 2cm diameter and 10cm height for single cell. I try to make it portable.

[dasimpson]

oh my EB cell is only 2cm diameter and 10cm height for single cell. I try to make it portable.

let me convert the inches to mm i think were playing with about the same size cell or close enogth
close mine would be 1.2cm by 15cm with 6mm by 5cm screw
i found moveing the screw in and out would get differnt volts and amps so i just ajusted to get best of both
if i was going to have more then one cell then i would rap the tube in tape and put a bag in the hole to insulate it from the other cells otheriws they would short if wired in series
once the tube is packes with soil i can take them indors if i wont

[kb24]

let me convert the inches to mm i think were playing with about the same size cell or close enogth
close mine would be 1.2cm by 15cm with 6mm by 5cm screw
i found moveing the screw in and out would get differnt volts and amps so i just ajusted to get best of both
if i was going to have more then one cell then i would rap the tube in tape and put a bag in the hole to insulate it from the other cells otheriws they would short if wired in series
once the tube is packes with soil i can take them indors if i wont

Wow, so u able to get 2mA is amazing.. Did u add any solution to it? Mine have higher voltage but low ampere