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Project Help and Ideas » WattMeter (Volt x Amp)

March 02, 2012
by serkanozkan
serkanozkan's Avatar

Hello,

Do you have any idea how Volt, Amp and (V*A=W)Watt Could be measured a Motor while driven controlled by our MCU?

I found some Current sensors just like temperature sensors. But For Voltage measuring I could not find something like that. Is there any one has better idea?

B. Regards Serkan

March 02, 2012
by nismotony
nismotony's Avatar

If it is a DC voltage motor: Use a current shunt and measure the voltage across it using an opamp instrumentation preamp. This will be your current to voltage converter. Plug that into a ADC.

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