Skip to main content
Electrical Engineering

Return to Question

Became Hot Network Question
Formatting.
Source Link
edit approved Jun 13 at 16:38
MarianD
edit approved Jun 13 at 16:38
MarianD
  • 1.3k
  • 2
  • 4
  • 16

I am driving a transducer with a function generator connected to an amplifier. I need to work out the time average power entering the transducer for safety reasons. I understand it can be calculated as such:

P = Vrms · ​Irms​ · cos(ϕ)$$P = V_{rms} \cdot ​I_{rms}​ \cdot \cos(ϕ)$$

Unfortunately, my oscilloscope only shows voltage, so I cannot work out the power factor. I am able to work out the Irms\$I_{rms}\ \$ from V = IR\$V = IR\$, but is there any way to estimate the power entering my transducer with this information, or would I need extra equipment? If so, what?

I am driving a transducer with a function generator connected to an amplifier. I need to work out the time average power entering the transducer for safety reasons. I understand it can be calculated as such:

P = Vrms · ​Irms​ · cos(ϕ)

Unfortunately, my oscilloscope only shows voltage so I cannot work out the power factor. I am able to work out the Irms from V = IR, but is there any way to estimate the power entering my transducer with this information, or would I need extra equipment? If so, what?

I am driving a transducer with a function generator connected to an amplifier. I need to work out the time average power entering the transducer for safety reasons. I understand it can be calculated as such:

$$P = V_{rms} \cdot ​I_{rms}​ \cdot \cos(ϕ)$$

Unfortunately, my oscilloscope only shows voltage, so I cannot work out the power factor. I am able to work out the \$I_{rms}\ \$ from \$V = IR\$, but is there any way to estimate the power entering my transducer with this information, or would I need extra equipment? If so, what?

deleted 14 characters in body
Source Link
JRE
JRE
  • 73.6k
  • 10
  • 112
  • 195

I am driving a transducer with a function generator connected to an amplifier. I need to work out the time average power entering the transducer for safety reasons. I understand it can be calculated as such:

P = Vrms · ​Irms​ · cos(ϕ)

ButUnfortunately, my oscilloscope only shows voltage, so I cannot work out the power factor. I am able to work out the Irms from V = IR, but is there any way to estimate the power entering my transducer with this information? Or, or would I need extra equipment (if? If so, what?)?

Thank you in advance.

I am driving a transducer with a function generator connected to an amplifier. I need to work out the time average power entering the transducer for safety reasons. I understand it can be calculated as such:

P = Vrms · ​Irms​ · cos(ϕ)

But my oscilloscope only shows voltage, so I cannot work out the power factor. I am able to work out the Irms from V = IR, but is there any way to estimate the power entering my transducer with this information? Or would I need extra equipment (if so, what?)?

Thank you in advance.

I am driving a transducer with a function generator connected to an amplifier. I need to work out the time average power entering the transducer for safety reasons. I understand it can be calculated as such:

P = Vrms · ​Irms​ · cos(ϕ)

Unfortunately, my oscilloscope only shows voltage so I cannot work out the power factor. I am able to work out the Irms from V = IR, but is there any way to estimate the power entering my transducer with this information, or would I need extra equipment? If so, what?

Source Link
UltrasoundNeuro
UltrasoundNeuro
  • 33
  • 4

Is there anyway to estimate the time average power without knowing the power factor?

I am driving a transducer with a function generator connected to an amplifier. I need to work out the time average power entering the transducer for safety reasons. I understand it can be calculated as such:

P = Vrms · ​Irms​ · cos(ϕ)

But my oscilloscope only shows voltage, so I cannot work out the power factor. I am able to work out the Irms from V = IR, but is there any way to estimate the power entering my transducer with this information? Or would I need extra equipment (if so, what?)?

Thank you in advance.