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122 Threads found on Hall Current Sensor
In the ACS724LLCTR-10AU hall sensor, page 7 states that accuracy is +/- 6% of maximum value. That means +/-600mA . Surely the accuracy can?t be that bad? Supposing I want to monitor a current of 600mA. ?This means that the accuracy would be literally nothing? ACS724LLCTR-10AU Unidirectional hall sensor (...)
Hello We wish to sense 200mA of current max in a LED drive circuit and there will be 200v of potential between the current sense bit and the output signal bit. No hall sensors seem to do low these are all up to at least 20A
Hello We wish to sense 200mA of current max in a LED drive circuit and there will be 200v of potential between the current sense bit and the output signal bit. No hall sensors seem to do low these are all up to at least 20A
Hello, I am trying to measure ac current flowing through an ac motor using hall effect current sensor ACS712 with maximum current rating of 5A. The sensor is interfaced to the raspberry pi through an ADC in series with the motor. The problem I am facing is everytime I get 2.5V from (...)
I think what it is doing is measuring voltage directly across the battery and using a hall sensor to monitor the current to one or more batteries in a chain (the current will be the same in them all as they are in series). That allows power to charge the battery to be measured and power drawn from the battery to be measured (...)
but the "direct measurement" does not meet my given criteria as this is for my thesis project Suppose you didn't yet understand what a "direct measuring" or "direct reading" hall sensor in contrast to a compensating sensor is, in any case you didn't yet specify your requirements.
Page 20 of the ACS724 hall sensor datasheet says that its output when sensed current is zero is vcc/2. Why should this be so for the unidirectional version??surely it should be 0v output for 0A sensed current? ACS724 hall sensor datasheet:
You mention that shunt has very low size and hall sensors have simply low I do not agree. A four terminal shunt cannot be very low in size (compared to a hall sensor that can be even a SMD part).
you could just use a hall sensor and read its output into a comparator to see if there is overcurrent. (ensure hall sensor bandwidth is fast enough for your purpose) Short circuit has happened when output volts has gone to zero, so just detect the zero volts and that is it.
Hello i am working on 3 Phase ACIM drive. now i have to work on current sense so that motor could not get damage under overload and short circuit condition. my question is which is best method for current sense. 1) hall effect sensor for AC current measurement at output phase 3) CT (...)
Also consider a hall sensor. At 800A you may find you can mount it near your wiring at some strategic angle or position, with no need to disconnect existing wires.
i am using acs 20a hall effect sensor it outputs 100mv / amp. i am using this to measure ac motor current, how to measure ac millivolt using 10bid adc my controller is pic18f4620. kindly tel me the measuring technique i am fed up i tried all the methods in google but i cannot get accurate results kindly help . complier used is ccs
I am having problem in measuring inductive load current with acs712(20amps) hall effect sensor, for resistive load it works 99% accurately. I am using pic micr 18f4620 this is my sample code While(1) { n1 = 0; j = 0; for(int16 i = 0;i<20;i++) { n1++; Table_sinusoide =get_adc_value(3); delay_us(997); j++; } mini =
Hello, We are using ACS770LCB-050U-PFF-T hall sensor. On page 5 of its datasheet it says the min load resistance from VIOUT to ground is 4700R. It also says the maximum load capacitance is 10nF. Does this mean we have to connect at least 4700 (or lower value) from VIOUT to ground? Also, does it mean that we may not connect more than 10nF from
proposal: ACS712 hall effect sensor to measure the DC current , with galvanic insulation range 0-5A , 0-20A ADC12 bits like MCP3304 4CH 12 bits for : -Amps (analog signal from ACS712) -Battery voltage -temperature LM35DZ (0-50C) 0 -500mV use classic I2C protocole or maybe a specialized device .. see LTC family power management & (...)
Hello, What happens if the unipolar version of the ACS770LCB-050U hall sensor gets current flowing through it the ?wrong way?? The datasheet doesn?t say.
Hello, Cold a hall sensor be used to reliably sense the FET current waveform in a flyback converter? Would it distort the waveform too much?. The attached shows the waveform of the FET current as a voltage across a sense resistor, but how would a hall sensor compete with this?
For current you can use current transformer and to detect the value of current, with help of OP-AMP or hall sensor connected to ADC For Voltage you can use potential transformer (which reduces your actual voltage in 1:N ratio, this can used for measuring large voltage values) and for detecting the exact (...)
Hi everyone! i am working with CSLA2DG hall effect current sensor with PIC16F676 and 7 segment display as: sensor supply volts are DC 8v out put is DC 4.03 volts at 0 Amps and for every Ampere the voltage increment at 1 mv. At PIC i used vADC * 500/1023 and (vADC / 10)% 10 is my first digit (I m trying to drop the 4v (...)
Hi everyone, I am trying to measure AC mains current. I have tried making current transformer for ac current measurement but it didn't worked! So I have turned to use this WSH315 hall effect sensor. So can we use it? if yes how? Any help would be appreciated. link for sensor

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