Description: Apple II Family: Square Wave Power Source (2/97)
Header: Apple II Family: Square Wave Power Source (2/97)

 Article Created: 01 September 1987
 Article Reviewed/Updated: 17 February 1997

 TOPIC -----------------------------------------------------------

 This article discusses the use of a square wave AC power source, as opposed
 to the normal sine wave, with the Apple II family of computers.

 DISCUSSION ------------------------------------------------------

 The Apple II power supply is of a switching type that rectifies the AC input
 voltage to a DC voltage for use internal to the supply. The AC input is first
 sent through a line filter and then to a diode bridge for rectification. The
 line filter consists of inductors and capacitors to smooth the waveform of
 the input voltage. This action would soften the square waves an inverter
 might supply and the whole combination makes it OK to use an Apple II on a
 square wave AC supply.


 Article Change History:
 17 Feb 1997 - Reviewed for technical accuracy, revised formatting.
 Copyright 1988-97, Apple Computer, Inc.
 Keywords: