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Update for 26-01-22 12:00

This commit is contained in:
Tyler Perkins 2022-01-26 12:00:01 -05:00
parent 11f3646aef
commit d87efa58a9
4 changed files with 49 additions and 2 deletions
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2
tech/AC.wiki
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@ -12,6 +12,8 @@ the power delivery is calculated via
For AC, however, we substitute E with the root mean square (RMS)
=== RMS ===
The RMS can be any value for different waves, however for the most common type
of wave, the sin wave, we can simply *multiply the peak voltage by 0.707*.
For example

4
tech/Impedance.wiki
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@ -19,8 +19,8 @@ signal. The relationship is shown below
X,,l,, = 2(pi)fL
Where X,,l,, is the inductive reactance (in Ohms),
f is AC signal frequency (in hz),
Where X,,l,, is the inductive reactance (in Ohms),
f is AC signal frequency (in hz),
and L is the inductance (in henery)
*Inductors always make voltage lead current*

44
tech/PEP.wiki Normal file
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@ -0,0 +1,44 @@
= PEP =
Peak envelope delivery or PEP is the average power of onc ecomplete RF cycle at
the peak of the singal envelope. It is important to note that it IS NOT the
power at the peak of an RF cycle during a peak of the signal's envelope.
PEP is used as it is a convient way to portray the max power of an amplitude
modulated signal.
== Calcuation ==
To calculate PEP, you need to know the [[Impedance]] and [[AC#RMS|RMS]].
You can also calcuate it using the Peak Envelope Power (PEV), or the peak
amplitude of one side band, or the Peak to Peak voltage (V,,p-p,,). V,,p-p,,
is found by doubling the PEV, or taking the max voltage of both sidebands.
PEP is euqal to the average power if an amplitude-modulated signal is not
modulated.
The way to calculate it is shown below
PEP = V,,RMS,,^2 / R
PEP = ((0.707 * V,,p-p,,) / 2)^2 / R
PEP = (PEV * 0.707)^2 / R
Where R is the loads [[Impedance]]. For example,
Peak envelope voltage (PEV) is 50V across a 50ohm load. PEP is
PEP = (50 * 0.707)^2 / 50
PEP = 25W
A 50ohm load is dissipating a 1200W PEP, the RMS voltage is
1200 = V,,RMS,,^2 / 50
60000 = V,,RMS,,^2
244.948 = V,,RMS,,

1
tech/electronics.wiki
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@ -39,6 +39,7 @@ Also see
== AC/Radio ==
* [[AC]]
* [[PEP]]
* [[Oscillator]]
* [[ADC]]
* [[DAC]]