plant battery #2
I made a miniature plant battery yesterday.
This one is made in 2 pressed peat pots with the mg ribbon between the inner and outer and the copper wire inside the inner one.
I also put a tablespoon of ground dolomite in the outer area where the mg ribbon is.
At first I got nothing except the meter's evidence that there was 1.7v and shorted across a 0.5 ohm resistor the amps were 5.8mA.
In the end, I piled more soil over the top of the inner peat pot so there was no separation and watered it a lot.
Then I reduced the base resistor of the germanium joule thief to zero and it lit.
It lit slowly and built, so I believe that having the memory cap across the leads helps.
It is still on and has grown in brightness over the last 12 hours, so ...
So, now, I want to know if the one without the memory cap will work today.
It may be that the peat pot was too dry for a while and the extra soil and the watering is all it needed to get going.
I better start writing this in a separate notebook. I think this will be long with many separate threads.
-----
I got the cotton covered bare wire today.
So, it took the royal mail international 7 days to get it to the west coast usa. Not bad, and a lot cheaper than the priority mail option.
jeanna
@Lidmotor,
I really like the idea of making the plant light a red light. This opens up another chapter.
The "full circle light"
I made a miniature plant battery yesterday.
This one is made in 2 pressed peat pots with the mg ribbon between the inner and outer and the copper wire inside the inner one.
I also put a tablespoon of ground dolomite in the outer area where the mg ribbon is.
At first I got nothing except the meter's evidence that there was 1.7v and shorted across a 0.5 ohm resistor the amps were 5.8mA.
In the end, I piled more soil over the top of the inner peat pot so there was no separation and watered it a lot.
Then I reduced the base resistor of the germanium joule thief to zero and it lit.
It lit slowly and built, so I believe that having the memory cap across the leads helps.
It is still on and has grown in brightness over the last 12 hours, so ...
So, now, I want to know if the one without the memory cap will work today.
It may be that the peat pot was too dry for a while and the extra soil and the watering is all it needed to get going.
I better start writing this in a separate notebook. I think this will be long with many separate threads.
-----
I got the cotton covered bare wire today.
So, it took the royal mail international 7 days to get it to the west coast usa. Not bad, and a lot cheaper than the priority mail option.
jeanna
@Lidmotor,
I really like the idea of making the plant light a red light. This opens up another chapter.
The "full circle light"
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