All Questions
Tagged with current-sensing hall-effect
6
questions
1
vote
2
answers
100
views
Allegro current sensors on 220 VAC mains
A friend is designing a power meter for 220 VAC mains and is considering Allegro current sensors like the ACS37002 or ACS71240. Those sensors put a wire with a sub-ohm resistance in line with the ...
- 113
-2
votes
1
answer
64
views
Current sensor for sensing 6 mA DC & 30 mA AC current [closed]
I want to sense very low currents for both AC & DC for an EV charger application. General AC & DC sensors do not have that much range to sense the current. Please suggest some good component ...
2
votes
2
answers
152
views
AC current detection with 1-10mA sensitivity
I need to build a current switch that will be connected to an Arduino (or Raspberry Pi) digital input. I need it to set to HIGH (3.3 V) if the current is above some threshold, and LOW otherwise. The ...
- 121
3
votes
3
answers
17k
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ESP32 using acs712 give wrong values
I'm trying to measure current with acs712 30A current sensor connecting to NodeMCU-32S but I'm getting wrong and unstable values. For zero current the ADC pin should read value of 2048 (esp has 12 bit ...
- 91
0
votes
1
answer
261
views
Closed-loop Hall-effect sensor operation
I know that closed-loop Hall-effect sensors generate a current in the secondary winding to oppose the flux in the core such that the net flux will equal zero.
At this point the current in the primary ...
- 11
1
vote
1
answer
2k
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Unipolar Hall current sensor signal conditioning for 5v ADC
Need help. I need to convert signal (0v to 5v) from Hall-based unipolar current sensor measuring the power line from the 84v 4kW battery pack to 5v MCU based ADC converter. Although both – the sensor ...
- 364