PF (power factor) is a measurement used in AC power systems. PF is the ratio between Watts and VA and also happens to be the sin (mathematical function) of the phase difference between the AC Amps and AC Volts. Leading and lagging PF indicate if the phase difference between the AC Amps and AC Volts … Read more

A sine wave is a pure tone, a single harmonic, often called the fundamental. Harmonic distortion is when higher harmonics are introduced into the original pure tone. Harmonic distortion is typically introduced by imperfect amplification and normally introduces odd harmonics ie 3rd, 5th, 7th etc. For example if you assume the pure tone is 1KHz … Read more

Several different kinds of processors can be used in mobile phones, performing several different functions. The most common processor is the application processor, in all mobile phones the application processor is based on an ARM core. This core was developed in the UK by ARM and has been licensed to many other silicon vendors for … Read more

PS is an abreveation of the German word Pferdestärke. PS is a measurement of power, mainly used by car manufacturers, 1 PS is approximately equal to one horsepower, 100 PS is approximately equal to 98.6 horsepower. PS is no longer a recognized unit, KW are preferred. 1 PS = 0.735 KW (approx).

GSM and CDMA are two different modulation standards. GSM is used primerily in Europe and CDMA in the US. GSM uses a system called TDMA to differentiate between different mobile calls, TDMA means Time Division Multiple Access. CDMA is a much more complex system which uses digital codes to differentiate between the different mobile calls. … Read more