Questions tagged [current-sensor]
The current-sensor tag has no summary.
36 questions
0 votes
1 answer
53 views
Trouble Measuring Current with CT-215B 3:100 Sensor — Need Pinout/Connection Info
I’m trying to measure the current of a circuit that draws around 1.5 A (AC) using a current sensor model CT-215B, 3:100. However, I haven’t been successful because I can’t find clear information about ...
-1 votes
1 answer
79 views
How to model and simulate a PCB Rogowski coil (two-halves type) with equivalent circuit in SPICE?
I’m currently trying to simulate a Rogowski coil implemented on a PCB, before moving to hardware design. The goal is to understand its electrical behavior — induced voltage, bandwidth, and the effect ...
0 votes
2 answers
201 views
ACS712 PWM motor current sensing
I'm working on a driver board for a 12V DC motor with encoders based around the IR2104 H-bridge drivers and IRF540 MOSFETS. The PCB is made in 4 layers, with a GND and power plane in between (top-GND-...
- 49
0 votes
0 answers
71 views
Current Sensors to view peak/ surge current drawn by BLDC motor
I'm using a 24 V BLDC motor with an inbuilt hall current sensor. While running it at different speeds, the motor stalls randomly. I have plotted the data from the current sensor, and there is no ...
- 13
0 votes
1 answer
141 views
Current transducer: no voltage
I am working on a project that requires non-contact current measurement. I found the LEM LA 25-P active current transducer. I've put the connection diagram from the datasheet here. My understanding is ...
1 vote
1 answer
576 views
Need to understand the current sensor connection in this circuit
I'm working on creating a smart power meter for my home, and I found this tutorial. I want to understand each part of the circuit, and the tutorial covers everything. However, it doesn't explain why ...
- 53
0 votes
1 answer
172 views
Measuring AC current using LEM HAIS 50P
I am working on LEM HAIS 50P current sensor and I'm using it for measuring AC current. I have an offset of 2.5V, so at 0A the output of the sensor is 2.5v which is as expected but if I increase the ...
2 votes
3 answers
996 views
Designing Eddy Current Sensor?
I am looking to build a eddy current sensor, I am having difficulty finding information on how I should be designing the sensor to fit my needs. There's a few studies and articles I've found that ...
- 23
3 votes
0 answers
184 views
Noisy output of Hall current sensor
I am designing a buck converter with a switching frequency of 200 kHz. I measure the current using a Hall-sensor, the ACS730KLCTR-20AB. The implementation is the following: I think the routing is ...
- 317
0 votes
2 answers
1k views
Footprint of current sense resistor for kelvin connection
I need a current sense resistor for my application and I want to add Kelvin connections to it. I found this in the datasheet of a 4 terminal resistor but the footprint doesn't contain "sensing ...
- 99
2 votes
1 answer
381 views
LEM current transducer 2.5 V internal reference
I am testing a LEM LTSR-25-NP current transducer. According to the datasheet, the current transducer should be outputting 2.5 V +/- 0.025 V when the input current is 0 A, but this is not what I am ...
- 41
2 votes
3 answers
365 views
How can we say this current sensor doesn't measure DC?
Digikey is saying this current sensor "CS0305B" from CUI Devices can measure AC and not DC. But in datasheet there is no reference or note mentioning this current sensor will not measure DC. ...
1 vote
2 answers
779 views
What does sensitivity mean for a current sensor when given in "mV/N" or "mV/mT" rather than "mV/A"?
I have been analyzing various datasheets of current sensors and majorly getting sensitivity given in "mV/A," from which I understand the output voltage per 1 ampere. I do not understand it ...
0 votes
1 answer
408 views
Most accurate way to measure universal (AC) motor current?
I'm designing a control circuit for a universal (AC) motor (single phase, brushed). I've simulated the control circuit and it works as expected. Circuit below is controlled by a STM32G4 series ...
- 28
1 vote
1 answer
841 views
Bidirectional Hall current sensor signal conditioning (shift and scale sensor output voltage)
I am using a Hall current sensor in circuitry where I need to implement signal conditioning in order to improve accuracy of measurement. The Hall sensor outputs 1 volt when measuring maximum current ...
