Power Supply and Oscillator for a Computer System Providing Automatic Selection of Supply Voltage and Frequency

摘要

A power system for providing a supply voltage to a computer and automatically varying said supply voltage responsive to the magnitude of the current being supplied to the computer, said power system comprising: a supply voltage circuit for generating at an output terminal said supply voltage and said current being supplied to the computer, said supply voltage circuit having a control terminal for receiving a control signal for varying said supply voltage between a first voltage level and a second voltage level in accordance with the magnitude of said control signal; and a current sensing circuit for sensing said current provided to the computer, said current sensing circuit generating at its output said control signal such that said control signal varies in magnitude in accordance with said current sensed, so as to vary said supply voltage between said first and second voltage levels.