Timeline for ACS71020 Connecting and reading voltage properly
Current License: CC BY-SA 4.0
3 events
| when toggle format | what | by | license | comment | |
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| Nov 20, 2019 at 16:33 | comment | added | Miaso | In case of suggested schematic (with 4x1 M Ohm R and Rsense 1.8k ) when 232 Vrms connected, I get ~0.101 Vrms on the VINP VINN input pins. I read the 0x20 register after ZVC (zero voltage crossing) happens,QtoFloat value is in range ~0.224335 to ~0.2410 , then its multiplied by 421.66. In a second I get 50 samples and average them. And the average is in range from ~95 to ~97 Volts. If i would consider full scale voltage something like 1000 V then the results would be in 230 Vrms range. But i have no explanation why it should be this high number. | |
| Nov 20, 2019 at 16:33 | comment | added | Miaso | Thanks for pointing out how to calculate the full scale voltage, was a bit confused on that. | |
| Nov 18, 2019 at 18:48 | history | answered | SlashLP97 | CC BY-SA 4.0 |