All Questions
Tagged with current-sensing microcontroller
13 questions
2
votes
1
answer
211
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High-side driver current monitoring via microcontroller
I'm building an automotive power distribution module which makes use of the Infineon BTS50010 high-side driver.
The high-side driver current is monitored via the sense pin (IS) connected to a ...
- 183
0
votes
2
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154
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Is there a reliable way to sense RPM without modifying a spark plug cable?
I need to recreate a tachometer without altering the wire that goes to the engine spark plug. I can only modify the wiring intended to close the circuit to turn off the engine. It is necessary to take ...
- 1
1
vote
2
answers
97
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Is amplification needed for high-side current sensing?
I have a 5 V system and I want to monitor the current in different parts of the system. I am planning to place a small value resistor on the positive power rail and feed the rail voltage and the ...
- 377
0
votes
1
answer
73
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Best approach for using multiple power monitors with single MCU (SPI)
I'm working on a project where I'm using several buck converters controlled by the same MCU (ESP32) and I will be adding a digital Power monitor to each converter. but I'm concerned about the number ...
- 99
2
votes
2
answers
828
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Measuring PWM controlled current with a microcontroller
I want to measure current using sensor MLX91220 which gives output in analog.
I have battery that I charge and discharge via switching MOSFET and want to measure current on this grid.
Problem is that ...
- 525
0
votes
1
answer
901
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Microamp-milliamp Measuring Circuit: will my circuit work? Feedback/Advice
I'm developing a device which must be able to measure milliamps and microamps on one of its lines (down to 1 microamp, but also clearly seeing if it's less than 1uA). It's going to be DC of different ...
- 3,673
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1
answer
48
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Method for sensing fault currents with microcontroller
How do I choose a proper approach for detecting ground fault currents (20 mA through 30A, 60Hz)? Let's say I have a zero sequence CT and calculate a burden resistor. I have a 12-bit ADC in the micro. ...
user115094
-3
votes
1
answer
3k
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How to measure DC current with a microcontroller?
I have a project where I need to measure DC currents in the range of 0-150 A. I am using an STM32F446RE MCU. I can't use the solution where I convert current to voltage using resistors and reading ...
- 45
0
votes
2
answers
181
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Real Time AC Current Sensing [closed]
I'm trying to analyse the harmonics present in different household devices's current waveforms. For this, I need a CT based current sensor which can sample data quite accurately and quickly (around 5% ...
1
vote
1
answer
439
views
What are shunts, as related to their use in current sensing in microcontrollers?
Within the manual for the I/O module I'm using (a Loytec LIOB-153) there are wiring diagrams to aid in wiring up your sensors and other inputs/outputs. There are two wiring diagrams for the purpose of ...
- 23
1
vote
3
answers
540
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AC current sensing using micro-controller and suitable circuit
I'm working on the project in which I need to measure AC current. The main problem I am facing is small current amplitude. I have to obtain the current waveform(I need complete waveform not just RMS ...
- 88
5
votes
2
answers
3k
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Measuring average current consumption in hardware
I'm working on a very low power budget, battery powered project. This project is allowed to draw 15uA (average) at 3v. The microcontroller we're using draws 4-10mA when active, and 2-3uA when asleep....
- 1,407
20
votes
5
answers
5k
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Current sensing nA to mA
I need to sense the current of a target MCU through various periods of its on/sleep/off state and then need to send this data back to another interface MCU to read out the value. They will be both on ...
- 231