Power of Burst waveform going through an amplifier

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SUMMARY

The theoretical power of a 1Vpp sine wave at 1 MHz, with 200 cycles over a 100 ms interval into a 50Ω load, is calculated to be 5 microwatts. This is derived from the continuous power of 2.5 milliwatts for the 50Ω load, which translates to 0.5 x 10^-6 joules per cycle. The calculations confirm that the power output remains consistent across the specified parameters, demonstrating the efficiency of the waveform when amplified by a 55dB amplifier.

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  • Basic knowledge of electrical power calculations
  • Familiarity with amplifier specifications, particularly gain in dB
  • Experience with load impedance concepts
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choppie808
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Hi all,


How would I calculate theoretical power of:

1Vpp
1Mhz (sinewave)
200 cycles
100ms interval
50Ω load

This waveform is going into a 55db amplifier.

Any help would be great.

Thanks,
Mark
 
Engineering news on Phys.org
1Vpp continuous into 50 ohm is 2.5 milliwatt.
2.5 milliwatt for 200 cycles at 1 MHz is 0.5 x 10^-6 joule.
0.5 x 10^-6 joule 10 times per second is 5x10^-6 joule/second or 5x10^-6 watt.
(5 microwatt)
 

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