In simulation tools like Proteus, the software often adjusts voltage ranges automatically, so you might not need extra components like resistors to handle the voltage difference between the 3.3V ADC and the 0-5V output of the ACS712. But in a physical circuit, when the sensor's output (0-5V) surpasses the ADC's input range (0-3.3V), employing a voltage divider with resistors becomes crucial. To scale down the 0-5V range to 0-3.3V. You can use two resistors in series -->R1: Connected between the sensor output and ground. R2: Connected between the sensor output and the ADC input. =>The formula to calculate the output voltage Vout = Vin *(R2/(R1+R2) )
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hello sir, adc voltage is 3v3 but the output of ACS712 is 0-5V, is there a problem if we dont add the resistor??
In simulation tools like Proteus, the software often adjusts voltage ranges automatically, so you might not need extra components like resistors to handle the voltage difference between the 3.3V ADC and the 0-5V output of the ACS712.
But in a physical circuit, when the sensor's output (0-5V) surpasses the ADC's input range (0-3.3V), employing a voltage divider with resistors becomes crucial.
To scale down the 0-5V range to 0-3.3V. You can use two resistors in series -->R1: Connected between the sensor output and ground.
R2: Connected between the sensor output and the ADC input.
=>The formula to calculate the output voltage
Vout = Vin *(R2/(R1+R2) )
Bro i need your help , where can I contact you .
@bekakraahmedramzi6351 You can contact me via email at
[ theembeddedthings@gmail.com ].
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