Questions tagged [hall-effect]
The Hall effect is the production of a voltage difference across an electrical conductor by a magnetic field.
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Measurement bias of Hall sensors with moving permanent magnets
I want to measure the magnetic flux density produced by a moving permanent magnet.
In my case, the magnet would move left and right alternatively at speed of 10 mm/s, with a constant vertical distance ...
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Closed loop Hall current sensor, is it possible to shift the result from negative output?
I am planning to use this closed loop Hall current sensor.
Is it possible to use a unipolar power supply (ie. only +24V, no negative) and shift the result by not connecting RM to ground, but to a ...
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BLDC six step commutation table confusion
What is the reason why there are many different six step commutation tables on the internet?
No1 table
No2 table
Table reference: "https://lucidar.me/en/actuators/commutation-for-bldc-motors/&...
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How do I get sheet resistance from my hall sensor model? Do I just put in that formula? If so, how do I put 'ln' and 'pi' in?
How can I achieve sheet resistance in my hall sensor model? How do I input that formula in to get that output graph?
Any feedback helps, thank you.
I am referencing from this paper. https://www.mdpi....
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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 ...
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Simulate hall voltage as a function of temperature in LTspice
I'm trying to simulate how temperature affects voltage sensitivity in my hall sensor from LTspice. How do I make use of this equation to get my correct output? Any feedback will help, thank you. I ...
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Deflection of current in a metal plate conductor
If I have a metal plate (square in shape) and an electric current moves from one side to the other. I understand that most of the current will take the path of least resistance but all paths will be ...
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BLDC motor with hall effect sensor
I have BLDC motor. I just powered up the hall effect sensors by connecting 5 V to my STM32 dev board and also connected the ground pin. Then I checked the voltage on output pins while rotating the ...
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Need help in identifying- analog Hall sensor with the numbers 958409 (Added: Actually 95B)
I have found the following analog Hall sensor on some old BLDC motors I salvaged. I'm hoping to replace them with digital ones, but I am unable to find any specs on the current ones.
A picture of a ...
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How do Hall-effect sensors work in multi-pole BLDC motors?
I'm somewhat confused on how Hall-effect sensing works for multi-pole BLDC motors. The Hall-effects sensors I have seen, for example in the image, often are in an arc and not evenly distributed.
I was ...
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Transmission of the signal from the Hall sensor to the PLC
I would need help with my application for counting impulses sent from a Hall sensor. Below is the description of the application.
In the project, I have a 2-pin Hall sensor powered by +13VDC. ...
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Two Hall signals to one ADC and pull pin to ground
I have a two-way thumb gas control which outputs two Hall-effect signals, each between 0.7 V and 4.0 V. I want to connect it to one ADC pin to control a motor.
Normally I run it with one Hall-effect ...
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Can anyone identify this surface-mount sensor?
The picture shows a part of a brushless motor. The sensor looks like it may be a Hall-effect sensor, but I'm not sure. Can anyone help me identify it?
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Hall-effect sensor PWM jitter from switching converter
I am designing a circuit to power two magnetic sensors using a Li-po battery (nominal voltage = 3.7 V), DC-DC boost converter, and then either an LDO linear regulator or a buck converter to generate a ...
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Arduino Nano 33 IoT: PWM read jitter
I am trying to read two 2 kHz (500 μs period) PWM waves (from two Hall-effect sensors) at two digital pins of an Arduino Nano 33 IoT simultaneously with on-duty ranging from roughly 30 to 70%.
One ...
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