Amplifier: See Error Amplifier.Appa

Amplifier: See Error Amplifier.
Apparent Power: The product of input rms voltage times
input rms current. High rms values in AC input, switch-mode
power systems, where the input current is distorted results in
high apparent power.
Autoranging Input: An ac power supply input circuit that
senses the input voltage level and automatically switches the
input to the appropriate range (i.e. 90 VAC to 130 VAC or 180
VAC to 264 VAC). Sometimes called an autoselect input.
Average Power: In an ac circuit, the average value of ac
power. For resistive circuits, this equals the square of the rms