Timeline for Current sense amplifier + op-amp buffer + ADC: Measuring down to 0 with a single supply
Current License: CC BY-SA 4.0
4 events
| when toggle format | what | by | license | comment | |
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| Mar 15, 2019 at 9:42 | comment | added | axk | My understanding is that when I'm doing high-side current sensing the big current will go through the sense resistor only and I'm planning to use 5mR or 10mR 5W resistor or 2 of 10mR 5W in parallel and it rarely actually reaches the peak of 20A so I hope I should be fine. I estimate the consumption of the circuit with all digital stuff and a bluetooth transmitter should be no more than 70mA. | |
| Mar 15, 2019 at 9:02 | comment | added | Dmitry Grigoryev | Unless I misread the question, the OP is talking about high-side current sense, your schematic is low-side. | |
| Mar 15, 2019 at 8:07 | comment | added | Linkyyy | -1 The problems you state are valid, but does not solve the question at all. He is already using a differential amplifier, and he wants to know how to measure close to GND which you solved by placing V2, but you skipped how that was implemented. | |
| Mar 15, 2019 at 1:58 | history | answered | WhatRoughBeast | CC BY-SA 4.0 |