Power in an electric circuit is the rate of flow of energy past a given point of the circuit.In alternating current circuits, energy storage elements such as inductors and capacitors may result in periodic reversals of the direction of energy flow.
The portion of power that, averaged over a complete cycle of the AC waveform, results in net transfer of energy in one direction is known as active power (sometimes also called real power).
The portion of power due to stored energy, which returns to the source in each cycle, is known as reactive power.Źródło: https://en.wikipedia.org/wiki/AC_power
Customers themselves, usually using the touch panel choose certain options standstill.
After driving into the parking traveled with him it is possible only upon payment of the appropriate fees and scanned the ticket.Parking systems are designed so that the most common problems that may arise during their lifetime the irregularities in the electricity and then the appropriate repair must address electrician.
Systems control the opening and closing of gates and barriers are most commonly used in their construction, electrical components, so repair them must deal with the electrician..