technical terms
ROHS
ROHS is an EU guideline for limitation of the usage of specific dangerous materials in electric and electronic devices. It came into effect in July 2006 and is intended to regulate the use of hazardous and environmentally damaging materials in electronic components.
Rifle Bearing
Rifle bearing refers to a specific gliding bearing technology. Oil is circulated within a closed rifle bearing through the turning of the axis. Small paddles on the axis push the oil out of the bearing from the one side. It flows outward into striations around the bearing face and is fed back into the bearing. The oil circulation provides especially effective cooling for the bearing and increases its service life.
Rated Power Output
Rated power output refers to the nominal power output for a given power supply unit. The nominal power is the manufacturer's reported power output for that power supply. The nominal power is one of the general terms associated with power and hence is indicated in watts.
Reactive Power
Reactive power is an undesirable amount of electricity that constantly travels between source and consumer without being used effectively. It arises during the phase displacement between electricity and voltage. The use of a PFC in a power supply reduces the effect to a minimum.