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Voltmeter click - MikroElektronika Voltage Measurement 0-24V

  • $31.00AUD
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  • Voltmeter click - MikroElektronika Voltage Measurement 0-24V

    Voltmeter click is a mikroBUS™ add-on board for measuring voltage in an external electric circuit.
    The board is designed to measure Direct Current only, and has a measurement range from 0 to 24V (it’s possible to measure both positive and negative charges).

    The design of the board is based on an OpAmp set up as a differential amplifier with a buffered input.
    Two onboard screw terminals (probe+ and probe-) are bringing in the current, which then flows through a row of four resistors. A voltage – proportional to the input charge – is generated across the last two resistors. From there it is sent to the differential amplifier that further intensifies the difference between the two inputs (+/-).

    The resulting charge is exactly 33 times lower than the actual measured voltage. It is converted by an onboard 12-bit ADC before being outputted through the mikroBUS™ SPI interface (the firmware in the target board MCU should be set up to multiply the ADC value to get the actual voltage). It is also possible to output the analog value directly through the mikroBUS™ AN pin (useful if the target MCU has a higher resolution ADC).
    The board can work with either a 3.3V or a 5V power supply.



    Type Measurements
    Applications Measuring DC Voltage from external circuit
    On-board modules MCP3201 12-bit ADC, MCP609 CMOS, MAX6106
    Key Features Measurement range: 0-24Vdc, 12-bit ADC
    Key Benefits Measures both positive and negative charges, Possible to measure analog values directly
    Interface Analog,SPI
    Input Voltage 3.3V or 5V
    Compatibility mikroBUS
    Click board size M (42.9 x 25.4 mm)



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