Timeline for Handling large current peaks on CR2032 battery
Current License: CC BY-SA 4.0
9 events
| when toggle format | what | by | license | comment | |
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| Feb 6, 2023 at 21:23 | comment | added | datenheim | Right, I underestimated the leakage current a bit. | |
| Feb 6, 2023 at 18:25 | comment | added | Letho | @datenheim electrolytic capacitors capacity around 10mF are rather big and also the leakage current is (assume typical) I=0.01CV or 3μA whichever is greater, so that would mean for 16V capacitor having leakage current 300 μA ( 0.01*10000μF*3V ) | |
| Feb 4, 2023 at 19:10 | comment | added | datenheim | Even electrolytic capacitors could do the trick. If their voltage rating is much higher as needed the leakage at low voltage can be low enough. I do not see why you chose a double-layer cap... | |
| Feb 4, 2023 at 16:02 | comment | added | Jon | You could disconnect the cap from the battery when you're not transmitting. You'd need a circuit to limit inrush current, but that wouldn't be hard if you already have an onboard microcontroller. Another idea is boost the battery voltage to charge the cap and then put a linear regulator on the output so that you increase the allowable voltage change. Won't be efficient though. | |
| Feb 4, 2023 at 15:46 | history | edited | JRE | CC BY-SA 4.0 |
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| Feb 4, 2023 at 15:36 | answer | added | Spehro 'speff' Pefhany | timeline score: 2 | |
| Feb 4, 2023 at 15:22 | history | edited | toolic | CC BY-SA 4.0 |
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| S Feb 4, 2023 at 15:21 | review | First questions | |||
| Feb 4, 2023 at 15:22 | |||||
| S Feb 4, 2023 at 15:21 | history | asked | Letho | CC BY-SA 4.0 |