Update for 26-01-22 12:00
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@ -12,6 +12,8 @@ the power delivery is calculated via
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For AC, however, we substitute E with the root mean square (RMS)
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=== RMS ===
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The RMS can be any value for different waves, however for the most common type
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of wave, the sin wave, we can simply *multiply the peak voltage by 0.707*.
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For example
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@ -19,8 +19,8 @@ signal. The relationship is shown below
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X,,l,, = 2(pi)fL
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Where X,,l,, is the inductive reactance (in Ohms),
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f is AC signal frequency (in hz),
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Where X,,l,, is the inductive reactance (in Ohms),
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f is AC signal frequency (in hz),
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and L is the inductance (in henery)
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*Inductors always make voltage lead current*
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44
tech/PEP.wiki
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44
tech/PEP.wiki
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@ -0,0 +1,44 @@
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= PEP =
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Peak envelope delivery or PEP is the average power of onc ecomplete RF cycle at
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the peak of the singal envelope. It is important to note that it IS NOT the
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power at the peak of an RF cycle during a peak of the signal's envelope.
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PEP is used as it is a convient way to portray the max power of an amplitude
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modulated signal.
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== Calcuation ==
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To calculate PEP, you need to know the [[Impedance]] and [[AC#RMS|RMS]].
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You can also calcuate it using the Peak Envelope Power (PEV), or the peak
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amplitude of one side band, or the Peak to Peak voltage (V,,p-p,,). V,,p-p,,
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is found by doubling the PEV, or taking the max voltage of both sidebands.
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PEP is euqal to the average power if an amplitude-modulated signal is not
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modulated.
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The way to calculate it is shown below
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PEP = V,,RMS,,^2 / R
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PEP = ((0.707 * V,,p-p,,) / 2)^2 / R
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PEP = (PEV * 0.707)^2 / R
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Where R is the loads [[Impedance]]. For example,
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Peak envelope voltage (PEV) is 50V across a 50ohm load. PEP is
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PEP = (50 * 0.707)^2 / 50
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PEP = 25W
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A 50ohm load is dissipating a 1200W PEP, the RMS voltage is
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1200 = V,,RMS,,^2 / 50
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60000 = V,,RMS,,^2
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244.948 = V,,RMS,,
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@ -39,6 +39,7 @@ Also see
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== AC/Radio ==
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* [[AC]]
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* [[PEP]]
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* [[Oscillator]]
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* [[ADC]]
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* [[DAC]]
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