Power supply regulation technique in which the regulating device (typically a transistor) is placed in series or parallel with the load. Voltage variations across the load are controlled by changing the effective resistance of the regulating device to dissipate unused power. Also see Series Regulator, Shunt Regulator and Post Regulation.
The percentage change in output voltage due to a change in input voltage level. This is usually a measurement of the output deviation as the input voltage is varied from low line to high line.
The change in DC output voltage when the AC input voltage is varied through out its range while the DC load is held constant. In switchers, this can be 90 to 264 volts AC unless otherwise specified. In linears, it may be as limited to 108 to 132 volts AC.