Скачать или смотреть Arduino Ac Voltage Sensor Module, Dc Voltage Sensor Module Part 2

http://www.hallroad.pk/modules/1313-p...
This circuit have 3 possibility of use.
1 Dc voltage Sensing
2 Ac voltage Sensing using Detecting Peak Value of Rectified and filtered sine wave .
3 AC Voltage Sensing using Clamping Method And Peak Detecting Without Filtering .
1 Dc voltage Sensing

This circuit have two options , 100V input sensing or 25 voltage sensinng.
Its Very simple Circuit , all you need to select you range using jumper and calibration after burning example code in arduino. This is just divider curcuit.
This circuit divides input volts by 10 and gives to you arduino.
So if arduino is reading 2.5v , thats mean input is 2.5*10 volts.
Its linear and stable circuit with noise filtering section in it.
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2 AC voltage Sensing using Peak Detecting of Rectified and filtered sine wave .
Here is circuit diagram of this board.

There is no need to power up this section , it just gives ready to use signal for microcontroller to measure.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 degree of 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 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 , but boll is there in your court

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