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| michka:research:microbial_fuel_cells:brussels7 [2017-09-20 17:53] – michka | michka:research:microbial_fuel_cells:brussels7 [2017-09-20 17:54] (current) – michka | ||
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| * Try again the two-transistors topology with parallel two-supercaps charge | * Try again the two-transistors topology with parallel two-supercaps charge | ||
| * Testing again the two-transistor Solarbot design | * Testing again the two-transistor Solarbot design | ||
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| - | ====Old abstract==== | ||
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| - | To be updated | ||
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| - | * I connected and tested the last version of our Power Harnessing System (PHS) circuit of [[michka: | ||
| - | * We saw that the energy bursts provided by the one-transistor version of the PHS circuit to the BBC microbit were quite short because of a mismatch between the nominal charge voltage of the supercap (2.7 V), the minimal power supply voltage of the BBC microbit (1.7 V), and the voltage drop across the circuit (about 1 V). | ||
| - | * The duration of the BBC microbit activity bursts seems to increase linearily as the capacity of the supercaps increase. | ||
| - | * We also observed that the two-transistor version of the PHS circuit in which the second transistor is activated by the BBC microbit itself does not seem to work, and probably never will, because it seems that the output voltage provided by the BBC microbit cannot be higher than the voltage it is supplied with. | ||
michka