High-side current-sensing circuit

110

01:49:45

Basic ammeter - seethe linked paper for calculations.

Divide V0 by 5 to get current in Amps.
 
https://www.ti.com/lit/an/sboa310a/sboa310a.pdf?ts=1604261323226

published 5 years ago

isaiahhsmith

5 years ago

How are you getting the amps from volts?

Robert_Kidd

5 years ago

Current you want to measure passes through the 100 milliOhm resistor. The op amp senses the voltage across that resistor.

Robert_Kidd

5 years ago

As V=I*R, the voltage output will be proportional to the current.

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