Peak-to-peak (pp) is the highest to lowest point in a sinusoidal graph. For example, if you are measuring a normal voltage (0j), the pp is from the 90° to the 270° in a sinusoidal graph.
Alternatively, pp can also mean 2 times the peak value (p).
The peak value is found by multiplying the root-mean-square (rms) value by √2 (squareroot of 2).
For an AC sine wave with no DC component, the peak-to-peak amplitude is equal to approximately 2.828 times the root-mean-square amplitude. Peak-to-peak values can be expressed for voltage (the usual case), current , or power .
