You can measure line ac voltages or dc voltage of dc sources like a battery or power supply using this PT Module DC Or AC Voltage Sensing Module Arduino Ac Voltage Sensor Module.
This circuit has two options, 100V input sensing or 25 voltage sensing.
Its Very simple Circuit, all you need to select your range using jumper and calibration after burning example code in Arduino. This is just divider circuit.
This circuit divides input volts by 10 and gives to your Arduino.
So if Arduino is reading 2.5v, that's mean input is 2.5*10 volts.
It's linear and stable circuit with noise filtering section in it.
There is no need to power up this section, it just gives ready to use the signal for the microcontroller to measure. The only difference between this circuit and previous is rectification section.
This section converts input AC voltage to DC and gives these voltage to voltage divider section.
3 AC Voltage Sensing using Clamping Method And Peak Detecting Without Filtering.
In this circuit, we are clamping sine wave and adjusting zero degrees of the sine wave to vcc/2 of microcontroller power supply.
This way we get complete sine wave even without losing 0.7v across diodes.
In this board, we can measure and monitor complete sine wave, either there is noise in the sine wave, surge, or power fail.
There is no delay of data, but its microcontroller programmer responsibility to write software for this board, We have given a basic program of Arduino to work for this section, it works nicely for voltage measurement.
Onboard precision clamp circuit , the signal for precise sampling .
Can be measured within the 275V AC voltage corresponding to the analog output can be adjusted
Only one section can be used at a time, DC voltage measurement, or AC voltage measurement also only 1 circuit can be used at a time while measuring of AC voltage because of the ground is different between both sections.
Components used in this circuit are here..
|Miscellaneous||2||VARIABLE, VARIABLE2||10K||Digikey 3252W-502LF-ND|
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