Activity for Keelanâ€
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Comment | Post #288195 |
If I understand this correctly, you are proposing to take out the SPV1040 and connect a 6V battery directly to the solar panel. Perhaps I should have noted that the 7.5V I measured is in full sun, and that in shadow the panel easily goes down to 3V or lower. I especially need to harvest energy during... (more) |
— | over 1 year ago |
| Edit | Post #288132 | Initial revision | — | over 1 year ago |
| Question | — |
Over-voltage protection for device with photovoltaic cell source I have a solar panel rated for 6V open-circuit and up to 150mA. I would like to connect this to an SPV1040 or similar buck-boost converter with MPPT functionality to be able to charge a 3.6V battery under cloudy conditions. The problem is that the SPV1040 has a maximum input voltage of 5.5V, while... (more) |
— | over 1 year ago |
| Comment | Post #287663 |
Do I understand this correctly that you would not only use the MPPT for measuring out what I can expect, but also "in production"? The MPPT itself also uses some power, so are you saving more than what it costs? (more) |
— | almost 2 years ago |
| Edit | Post #287627 | Initial revision | — | almost 2 years ago |
| Question | — |
How to check realistic specs of small solar panel? I have a small solar panel rated for 6V/DC, 150mA. I know that those specs are under ideal circumstances, and I would like to do some measurements in different weather conditions to see what I can expect. To measure voltage I can of course use a multimeter. For current, I think I know what to do, ... (more) |
— | almost 2 years ago |
| Comment | Post #285494 |
Because those are flash, the read and write speed will be much lower. So the fact that serial flash chips can have higher capacity does seem to support my idea that it has to do with matching transmission speed. Thanks! (more) |
— | almost 3 years ago |
| Edit | Post #285494 | Initial revision | — | almost 3 years ago |
| Question | — |
Why do large RAM chips not have a serial interface? I have a PIC32MZ2048ECG064, a 64-pin 32-bit microcontroller with 512kB RAM. This is not enough for my purposes, I need to extend it by at least 32MB, preferably 64 or 128. I believe this means I can only use DRAM, because other types would not be available in this size. I read that devices in thi... (more) |
— | almost 3 years ago |